version bump to 0.15

Thanks to Nabarl Wang, Davi Lopes, Matheus Silva Sales, Jhonatan Cardoso

.tx/config

@@ -0,0 +1,33 @@
+[main]
+host = https://www.transifex.com
+lang_map = he: iw, zh_CN: zh-rCN, zh_TW: zh-rTW, es_MX: es-rMX, pt_BR: pt-rBR, nb_NO: nb-rNO
+
+[unipatcher.strings_xml]
+file_filter = app/src/main/res/values-<lang>/strings.xml
+source_file = app/src/main/res/values/strings.xml
+source_lang = en
+type = ANDROID
+
+[unipatcher.about_md]
+file_filter = app/src/main/res/raw-<lang>/about.md
+source_file = app/src/main/res/raw/about.md
+source_lang = en
+type = TXT
+
+[unipatcher.faq_md]
+file_filter = app/src/main/res/raw-<lang>/faq.md
+source_file = app/src/main/res/raw/faq.md
+source_lang = en
+type = TXT
+
+[unipatcher.changelog_md]
+file_filter = app/src/main/res/raw-<lang>/changelog.md
+source_file = app/src/main/res/raw/changelog.md
+source_lang = en
+type = TXT
+
+[unipatcher.google-play_txt]
+file_filter = google-play/<lang>/google-play.txt
+source_file = google-play/en/google-play.txt
+source_lang = en
+type = TXT

README.md

@@ -1,24 +1,37 @@
+[![GPL Licence](https://badges.frapsoft.com/os/gpl/gpl.png?v=103)](https://opensource.org/licenses/GPL-3.0/)
 [![API](https://img.shields.io/badge/API-14%2B-brightgreen.svg?style=flat)](https://android-arsenal.com/api?level=14)
 
 UniPatcher
 ----------
 
-UniPatcher is a ROM patcher for Android that supports IPS, UPS, BPS, PPF, DPS, EBP and XDelta3 patch types.
+UniPatcher is a ROM patcher for Android that supports IPS, IPS32, UPS, BPS, APS (GBA), APS (N64), PPF, DPS, EBP and XDelta3 patch types.
 
 ### Additional features:
 
+* Creating XDelta3 patches
 * Fix checksum in Sega Mega Drive ROMs
 * Add/Delete SMC header in Super Nintendo ROMs
 
+### Screenshots:
+
+<img src="/google-play/screenshot_1.png" width="350"> <img src="/google-play/screenshot_2.png" width="350">
+
 ### Install UniPatcher:
 
-[<img src="https://play.google.com/intl/de_de/badges/images/generic/en_badge_web_generic.png" width="192">](https://play.google.com/store/apps/details?id=org.emunix.unipatcher)
+[<img src="/google-play/badges/google-play.png" alt="Get it on Google Play" width="220">](https://play.google.com/store/apps/details?id=org.emunix.unipatcher) [<img src="/google-play/badges/f-droid.png" alt="Get it on F-Droid" width="220">](https://f-droid.org/app/org.emunix.unipatcher)
 
-### How to contribute to UniPatcher:
+[<img src="/google-play/badges/amazon.png" alt="Get it on Amazon" width="220">](http://www.amazon.com/gp/mas/dl/android?p=org.emunix.unipatcher)  [<img src="/google-play/badges/slideme.png" alt="Get it on SlideMe" width="220">](http://slideme.org/application/unipatcher)
 
-#### Report a bug or suggest a new feature
+[... or get a Release APK here on GitHub](https://github.com/btimofeev/UniPatcher/releases)
 
-Bugs and new features are being discussed on the GitHub [Issue Tracker](https://github.com/btimofeev/UniPatcher/issues).
+### Contribute:
 
-#### Help with translations
-The translations are managed on [Transifex](https://www.transifex.com/unipatcher/unipatcher/). 
+#### Report a bug or suggest features
+
+These are discussed on the GitHub [Issue Tracker](https://github.com/btimofeev/UniPatcher/issues).
+
+#### Translations
+Help translate UniPatcher into another language on the [Transifex project page](https://www.transifex.com/unipatcher/unipatcher/). 
+
+### License
+UniPatcher is licensed under the GPL version 3. You can find the license text in the COPYING file.

app/CMakeLists.txt

@@ -1,4 +1,2 @@
 cmake_minimum_required(VERSION 3.4.1)
-add_library( xdelta3 SHARED src/main/cpp/xdelta3.c )
-find_library( log-lib log )
-target_link_libraries( xdelta3 ${log-lib} )
+add_library( xdelta3 SHARED src/main/cpp/xdelta3.c )

app/build.gradle

@@ -1,13 +1,8 @@
-def versionMajor = 0
-def versionMinor = 11
-def versionPatch = 0
-def versionBuild = 0
-
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion '25.0.2'
+    compileSdkVersion 27
+    buildToolsVersion '27.0.1'
 
     signingConfigs {
         release
@@ -16,13 +11,17 @@ android {
     defaultConfig {
         applicationId "org.emunix.unipatcher"
         minSdkVersion 14
-        targetSdkVersion 25
-        versionCode versionMajor * 1000000 + versionMinor * 10000 + versionPatch * 100 + versionBuild
-        versionName "${versionMajor}.${versionMinor}.${versionPatch}"
+        targetSdkVersion 27
+        versionCode 150000
+        versionName "0.15"
+        vectorDrawables.useSupportLibrary = true
+        ndk {
+            abiFilters 'armeabi-v7a', 'x86'
+        }
         externalNativeBuild {
             cmake {
                 cppFlags ""
-                arguments "-DANDROID_PLATFORM=android-14"
+                arguments "-DANDROID_PLATFORM=android-14", "-DCMAKE_BUILD_TYPE=Release"
             }
         }
     }
@@ -30,24 +29,66 @@ android {
     buildTypes {
         release {
             minifyEnabled true
+            shrinkResources false
             proguardFile './proguard-android.txt'
             signingConfig signingConfigs.release
         }
     }
 
+    flavorDimensions "default"
+
+    productFlavors {
+        free {
+            buildConfigField "String", "RATE_URL", "\"https://github.com/btimofeev/UniPatcher\""
+            buildConfigField "String", "SHARE_URL", "\"https://github.com/btimofeev/UniPatcher\""
+            buildConfigField "String", "PAYPAL_USER", "\"btimofeev@emunix.org\""
+            buildConfigField "String", "PAYPAL_CURRENCY_CODE", "\"USD\""
+            buildConfigField "String", "BITCOIN_ADDRESS", "\"16coztryz7xbNNDNhhf98wuHmi3hEintsW\""
+        }
+        google {
+            buildConfigField "String", "RATE_URL", "\"market://details?id=org.eminix.unipatcher\""
+            buildConfigField "String", "SHARE_URL", "\"https://play.google.com/store/apps/details?id=org.eminix.unipatcher\""
+            buildConfigField "String", "GOOGLE_PLAY_PUBKEY", "\"MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA384jTCBEuJ8nCWaC4S6AFrnMQN4mBlmkOXHV3Xg5hlFOl8TkVwiCfqz8r20yJpEy0IJ1+3QRnlq59zadUxbkD+PacJlGB/r2b3mbKfu+m0K+e/0aL6eWupjMSIyPgpnbN3uswiBEGUb4ytzYF53ZKTbLARnruQdMnjV6+VyfwMgpor/48anVQawDARBj/AIAj6VGtRHLmg6DmKDyOGQ7uCgXSv+ysnBKJjtIX/L/5nQgL8Q+9jsr2knuWY7j9BmrtpUXaDH3Kb50M1TOCKiqxPGa8lInOOIndABWxcpqmSMXP06SPYOanUlEH7lT0jjqpHpFNx8hRTT9xf652rgMJwIDAQAB\""
+        }
+        amazon {
+            buildConfigField "String", "RATE_URL", "\"amzn://apps/android?p=org.emunix.unipatcher\""
+            buildConfigField "String", "SHARE_URL", "\"http://www.amazon.com/gp/mas/dl/android?p=org.emunix.unipatcher\""
+            buildConfigField "String", "PAYPAL_USER", "\"btimofeev@emunix.org\""
+            buildConfigField "String", "PAYPAL_CURRENCY_CODE", "\"USD\""
+            buildConfigField "String", "BITCOIN_ADDRESS", "\"16coztryz7xbNNDNhhf98wuHmi3hEintsW\""
+        }
+        slideme {
+            buildConfigField "String", "RATE_URL", "\"sam://details?id=org.emunix.unipatcher\""
+            buildConfigField "String", "SHARE_URL", "\"http://slideme.org/application/unipatcher\""
+            buildConfigField "String", "PAYPAL_USER", "\"btimofeev@emunix.org\""
+            buildConfigField "String", "PAYPAL_CURRENCY_CODE", "\"USD\""
+            buildConfigField "String", "BITCOIN_ADDRESS", "\"16coztryz7xbNNDNhhf98wuHmi3hEintsW\""
+        }
+    }
+
+    sourceSets{
+        amazon.java.srcDir 'src/free/java'
+        slideme.java.srcDir 'src/free/java'
+    }
+
     externalNativeBuild {
         cmake {
             path "CMakeLists.txt"
         }
     }
+
+    lintOptions {
+        disable 'MissingTranslation'
+    }
+
 }
 
 def Properties props = new Properties()
 def propFile = file('../../signing.properties')
-if (propFile.canRead()){
+if (propFile.canRead()) {
     props.load(new FileInputStream(propFile))
 
-    if (props!=null && props.containsKey('STORE_FILE') && props.containsKey('STORE_PASSWORD') &&
+    if (props != null && props.containsKey('STORE_FILE') && props.containsKey('STORE_PASSWORD') &&
             props.containsKey('KEY_ALIAS') && props.containsKey('KEY_PASSWORD')) {
 
         println 'RELEASE BUILD SIGNING'
@@ -68,21 +109,18 @@ if (propFile.canRead()){
 
 dependencies {
     testCompile 'junit:junit:4.12'
-    testCompile 'org.mockito:mockito-core:2.2.28'
+    testCompile 'org.mockito:mockito-core:2.12.0'
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:support-v4:25.1.0'
-    compile 'com.android.support:appcompat-v7:25.1.0'
-    compile 'com.android.support:cardview-v7:25.1.0'
-    compile 'com.android.support:preference-v14:25.1.0'
-    compile 'com.android.support:recyclerview-v7:25.1.0'
-    compile 'com.android.support:design:25.1.0'
-    compile 'com.google.firebase:firebase-ads:10.0.1'
-    compile 'com.google.firebase:firebase-core:10.0.1'
-    compile 'com.google.firebase:firebase-crash:10.0.1'
-    compile 'com.anjlab.android.iab.v3:library:1.0.36'
+    compile 'com.android.support:support-v4:27.0.2'
+    compile 'com.android.support:appcompat-v7:27.0.2'
+    compile 'com.android.support:cardview-v7:27.0.2'
+    compile 'com.android.support:preference-v14:27.0.2'
+    compile 'com.android.support:recyclerview-v7:27.0.2'
+    compile 'com.android.support:design:27.0.2'
+    compile 'com.android.support:support-v13:27.0.2' // used in material-dialogs
     compile 'commons-io:commons-io:2.5'
-    compile 'org.sufficientlysecure:html-textview:3.0'
-    compile 'com.afollestad.material-dialogs:core:0.9.1.0'
+    compile 'org.sufficientlysecure:donations:2.5'
+    compile 'org.sufficientlysecure:html-textview:3.5'
+    compile 'org.commonjava.googlecode.markdown4j:markdown4j:2.2-cj-1.1'
+    compile 'com.afollestad.material-dialogs:core:0.9.6.0'
 }
-
-apply plugin: 'com.google.gms.google-services'

app/google-services.json

@@ -1,53 +0,0 @@
-{
-  "project_info": {
-    "project_number": "32713218397",
-    "firebase_url": "https://unipatcher-897b3.firebaseio.com",
-    "project_id": "unipatcher-897b3",
-    "storage_bucket": "unipatcher-897b3.appspot.com"
-  },
-  "client": [
-    {
-      "client_info": {
-        "mobilesdk_app_id": "1:32713218397:android:4b0afdca1aa174e1",
-        "android_client_info": {
-          "package_name": "org.emunix.unipatcher"
-        }
-      },
-      "oauth_client": [
-        {
-          "client_id": "32713218397-h8ptc6lelg9l871v10pgq11ni8ejaavg.apps.googleusercontent.com",
-          "client_type": 1,
-          "android_info": {
-            "package_name": "org.emunix.unipatcher",
-            "certificate_hash": "C31CB23D974F426B38D7AF0848A6F1066FCF1FD9"
-          }
-        },
-        {
-          "client_id": "32713218397-bhgevevp6i5coukhnkti1g9cecnujuav.apps.googleusercontent.com",
-          "client_type": 3
-        }
-      ],
-      "api_key": [
-        {
-          "current_key": "AIzaSyD_8JprF21wL7wpRV7JymLzlbHR-jUBZKI"
-        }
-      ],
-      "services": {
-        "analytics_service": {
-          "status": 2,
-          "analytics_property": {
-            "tracking_id": "UA-77394676-1"
-          }
-        },
-        "appinvite_service": {
-          "status": 1,
-          "other_platform_oauth_client": []
-        },
-        "ads_service": {
-          "status": 2
-        }
-      }
-    }
-  ],
-  "configuration_version": "1"
-}

app/src/free/java/org/emunix/unipatcher/ui/activity/DonateActivity.java

@@ -0,0 +1,72 @@
+/*
+ Copyright (c) 2017 Boris Timofeev
+
+ This file is part of UniPatcher.
+
+ UniPatcher is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ UniPatcher is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
+
+ */
+
+package org.emunix.unipatcher.ui.activity;
+
+import android.os.Bundle;
+import android.support.v4.app.FragmentTransaction;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.Toolbar;
+import android.view.MenuItem;
+
+import org.emunix.unipatcher.BuildConfig;
+import org.emunix.unipatcher.R;
+import org.sufficientlysecure.donations.DonationsFragment;
+
+public class DonateActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_donate);
+        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+        try {
+            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+        } catch (NullPointerException e) {
+            /* empty */
+        }
+        getSupportActionBar().setTitle(R.string.donate_activity_title);
+
+        DonationsFragment fragment = (DonationsFragment) getSupportFragmentManager().findFragmentByTag("donationsFragment");
+        if (fragment == null) {
+            FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
+            fragment = DonationsFragment.newInstance(BuildConfig.DEBUG,
+                    false, null, null, null,
+                    true, BuildConfig.PAYPAL_USER, BuildConfig.PAYPAL_CURRENCY_CODE, getString(R.string.donation),
+                    false, null, null,
+                    true, BuildConfig.BITCOIN_ADDRESS);
+
+            ft.replace(R.id.donate_fragment, fragment, "donationsFragment");
+            ft.commit();
+        }
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case android.R.id.home:
+                finish();
+                return true;
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+    }
+}

app/src/google/AndroidManifest.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="org.emunix.unipatcher">
+
+    <uses-permission android:name="com.android.vending.BILLING"/>
+
+    <application/>
+
+</manifest>

app/src/google/java/org/emunix/unipatcher/ui/activity/DonateActivity.java

@@ -0,0 +1,91 @@
+/*
+ Copyright (c) 2017 Boris Timofeev
+
+ This file is part of UniPatcher.
+
+ UniPatcher is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ UniPatcher is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
+
+ */
+
+package org.emunix.unipatcher.ui.activity;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentManager;
+import android.support.v4.app.FragmentTransaction;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.Toolbar;
+import android.view.MenuItem;
+
+import org.emunix.unipatcher.BuildConfig;
+import org.emunix.unipatcher.R;
+import org.sufficientlysecure.donations.DonationsFragment;
+
+public class DonateActivity extends AppCompatActivity {
+
+    private static final String[] GOOGLE_PLAY_CATALOG = new String[]{"donate_1", "donate_3",
+            "donate_5", "donate_10", "donate_25", "donate_50", "donate_100"};
+    private static final String[] GOOGLE_PLAY_COST = new String[]{"$1", "$3", "$5", "$10",
+            "$25", "$50", "$100"};
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_donate);
+        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+        try {
+            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+        } catch (NullPointerException e) {
+            /* empty */
+        }
+        getSupportActionBar().setTitle(R.string.donate_activity_title);
+
+        DonationsFragment fragment = (DonationsFragment) getSupportFragmentManager().findFragmentByTag("donationsFragment");
+        if (fragment == null) {
+            FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
+            fragment = DonationsFragment.newInstance(BuildConfig.DEBUG,
+                    true, BuildConfig.GOOGLE_PLAY_PUBKEY, GOOGLE_PLAY_CATALOG, GOOGLE_PLAY_COST,
+                    false, null, null, null,
+                    false, null, null,
+                    false, null);
+
+            ft.replace(R.id.donate_fragment, fragment, "donationsFragment");
+            ft.commit();
+        }
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+
+        FragmentManager fragmentManager = getSupportFragmentManager();
+        Fragment fragment = fragmentManager.findFragmentByTag("donationsFragment");
+        if (fragment != null) {
+            fragment.onActivityResult(requestCode, resultCode, data);
+        }
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case android.R.id.home:
+                finish();
+                return true;
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+    }
+}

app/src/main/AndroidManifest.xml

@@ -1,17 +1,16 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="org.emunix.unipatcher"
-    android:installLocation="auto">
+          package="org.emunix.unipatcher"
+          android:installLocation="auto">
 
-    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
-    <uses-permission android:name="android.permission.WAKE_LOCK" />
-    <uses-permission android:name="com.android.vending.BILLING" />
-    <uses-permission android:name="android.permission.INTERNET" />
-    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.WAKE_LOCK"/>
 
     <application
+        android:name=".UniPatcher"
         android:allowBackup="false"
+        android:extractNativeLibs="true"
         android:fullBackupContent="false"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
@@ -22,57 +21,54 @@
             android:label="@string/app_name"
             android:launchMode="singleTask">
             <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
+                <action android:name="android.intent.action.MAIN"/>
 
-                <category android:name="android.intent.category.LAUNCHER" />
+                <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
             <intent-filter>
-                <action android:name="android.intent.action.VIEW" />
+                <action android:name="android.intent.action.VIEW"/>
 
-                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.BROWSABLE" />
+                <category android:name="android.intent.category.DEFAULT"/>
+                <category android:name="android.intent.category.BROWSABLE"/>
 
-                <data android:scheme="file" />
-                <data android:mimeType="*/*" />
-                <data android:pathPattern="/.*\\.ips" />
-                <data android:pathPattern="/.*\\.ups" />
-                <data android:pathPattern="/.*\\.bps" />
-                <data android:pathPattern="/.*\\.ppf" />
-                <data android:pathPattern="/.*\\.ebp" />
-                <data android:pathPattern="/.*\\.dps" />
-                <data android:pathPattern="/.*\\.xdelta" />
-                <data android:pathPattern="/.*\\.xdelta3" />
-                <data android:pathPattern="/.*\\.vcdiff" />
-                <data android:host="*" />
+                <data android:scheme="file"/>
+                <data android:mimeType="*/*"/>
+                <data android:pathPattern="/.*\\.aps"/>
+                <data android:pathPattern="/.*\\.ips"/>
+                <data android:pathPattern="/.*\\.ups"/>
+                <data android:pathPattern="/.*\\.bps"/>
+                <data android:pathPattern="/.*\\.ppf"/>
+                <data android:pathPattern="/.*\\.ebp"/>
+                <data android:pathPattern="/.*\\.dps"/>
+                <data android:pathPattern="/.*\\.xdelta"/>
+                <data android:pathPattern="/.*\\.xdelta3"/>
+                <data android:pathPattern="/.*\\.xd"/>
+                <data android:pathPattern="/.*\\.vcdiff"/>
+                <data android:host="*"/>
             </intent-filter>
         </activity>
 
         <activity
             android:name=".ui.activity.FilePickerActivity"
-            android:label="@string/file_picker_activity_title" />
+            android:label="@string/file_picker_activity_title"/>
 
         <activity
             android:name=".ui.activity.SettingsActivity"
             android:label="@string/settings_activity_title"
-            android:theme="@style/PreferenceTheme" />
+            android:theme="@style/PreferenceTheme"/>
 
         <activity
             android:name=".ui.activity.HelpActivity"
-            android:label="@string/help_activity_title" />
-
-        <meta-data
-            android:name="com.google.android.gms.version"
-            android:value="@integer/google_play_services_version" />
+            android:label="@string/help_activity_title"/>
 
         <activity
-            android:name="com.google.android.gms.ads.AdActivity"
-            android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"
-            android:theme="@android:style/Theme.Translucent" />
+            android:name=".ui.activity.DonateActivity"
+            android:label="@string/donate_activity_title"/>
 
         <service
             android:name=".WorkerService"
-            android:exported="false" />
+            android:exported="false"/>
 
     </application>
 
-</manifest>
+</manifest>

app/src/main/cpp/xdelta3.c

@@ -2,7 +2,7 @@
 This file based on encode_decode_test.c from XDelta3 sources.
 
 Copyright (C) 2007 Ralf Junker
-Copyright (C) 2016 Boris Timofeev
+Copyright (C) 2016-2017 Boris Timofeev
 
 This file is part of UniPatcher.
 
@@ -23,7 +23,6 @@ along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
 #include <jni.h>
 #include <stdio.h>
 #include <string.h>
-#include <android/log.h>
 
 #define SIZEOF_SIZE_T 4
 #define SIZEOF_UNSIGNED_LONG_LONG 8
@@ -31,19 +30,21 @@ along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
 #include "xdelta3/xdelta3/xdelta3.h"
 #include "xdelta3/xdelta3/xdelta3.c"
 
-int apply(FILE *patch, FILE *in, FILE *out);
+int code(int encode, FILE *in, FILE *src, FILE *out, int ignoreChecksum);
 
 const int ERR_UNABLE_OPEN_PATCH = -5001;
 const int ERR_UNABLE_OPEN_ROM = -5002;
 const int ERR_UNABLE_OPEN_OUTPUT = -5003;
+const int ERR_UNABLE_OPEN_SOURCE = -5004;
+const int ERR_UNABLE_OPEN_MODIFIED = -5005;
 const int ERR_WRONG_CHECKSUM = -5010;
 
-int Java_org_emunix_unipatcher_patch_XDelta_xdelta3apply(JNIEnv *env,
-            jobject this,
-            jstring patchPath,
-            jstring romPath,
-            jstring outputPath)
-{
+int Java_org_emunix_unipatcher_patcher_XDelta_xdelta3apply(JNIEnv *env,
+                                                         jobject this,
+                                                         jstring patchPath,
+                                                         jstring romPath,
+                                                         jstring outputPath,
+                                                         jboolean ignoreChecksum) {
     int ret = 0;
     const char *patchName = (*env)->GetStringUTFChars(env, patchPath, NULL);
     const char *romName = (*env)->GetStringUTFChars(env, romPath, NULL);
@@ -57,25 +58,22 @@ int Java_org_emunix_unipatcher_patch_XDelta_xdelta3apply(JNIEnv *env,
     (*env)->ReleaseStringUTFChars(env, romPath, romName);
     (*env)->ReleaseStringUTFChars(env, outputPath, outputName);
 
-    if (!patchFile)
-    {
+    if (!patchFile) {
         return ERR_UNABLE_OPEN_PATCH;
     }
 
-    if (!romFile)
-    {
+    if (!romFile) {
         fclose(patchFile);
         return ERR_UNABLE_OPEN_ROM;
     }
 
-    if (!outputFile)
-    {
+    if (!outputFile) {
         fclose(patchFile);
         fclose(romFile);
         return ERR_UNABLE_OPEN_OUTPUT;
     }
 
-    ret = apply(patchFile, romFile, outputFile);
+    ret = code(0, patchFile, romFile, outputFile, (int)ignoreChecksum);
 
     fclose(patchFile);
     fclose(romFile);
@@ -83,68 +81,111 @@ int Java_org_emunix_unipatcher_patch_XDelta_xdelta3apply(JNIEnv *env,
     return ret;
 }
 
-int apply(FILE *patch, FILE *in, FILE *out)
-{
-    int BUFFER_SIZE = 32768;
+int Java_org_emunix_unipatcher_patcher_XDelta_xdelta3create(JNIEnv *env,
+                                                           jobject this,
+                                                           jstring patchPath,
+                                                           jstring sourcePath,
+                                                           jstring modifiedPath) {
+    int ret = 0;
+    const char *patchName = (*env)->GetStringUTFChars(env, patchPath, NULL);
+    const char *sourceName = (*env)->GetStringUTFChars(env, sourcePath, NULL);
+    const char *modifiedName = (*env)->GetStringUTFChars(env, modifiedPath, NULL);
+
+    FILE *patchFile = fopen(patchName, "wb");
+    FILE *sourceFile = fopen(sourceName, "rb");
+    FILE *modifiedFile = fopen(modifiedName, "rb");
+
+    (*env)->ReleaseStringUTFChars(env, patchPath, patchName);
+    (*env)->ReleaseStringUTFChars(env, sourcePath, sourceName);
+    (*env)->ReleaseStringUTFChars(env, modifiedPath, modifiedName);
+
+    if (!patchFile) {
+        return ERR_UNABLE_OPEN_PATCH;
+    }
+
+    if (!sourceFile) {
+        fclose(patchFile);
+        return ERR_UNABLE_OPEN_SOURCE;
+    }
+
+    if (!modifiedFile) {
+        fclose(patchFile);
+        fclose(sourceFile);
+        return ERR_UNABLE_OPEN_MODIFIED;
+    }
+
+    ret = code(1, modifiedFile, sourceFile, patchFile, 0);
+
+    fclose(patchFile);
+    fclose(sourceFile);
+    fclose(modifiedFile);
+    return ret;
+}
+
+
+int code(int encode, FILE *in, FILE *src, FILE *out, int ignoreChecksum) {
+    int BUFFER_SIZE = 0x1000;
 
     int r, ret;
     xd3_stream stream;
     xd3_config config;
     xd3_source source;
-    void* Input_Buf;
+    void *Input_Buf;
     int Input_Buf_Read;
 
-    memset (&stream, 0, sizeof (stream));
-    memset (&source, 0, sizeof (source));
+    memset(&stream, 0, sizeof(stream));
+    memset(&source, 0, sizeof(source));
 
     xd3_init_config(&config, 0);
     config.winsize = BUFFER_SIZE;
+    if (ignoreChecksum) {
+        config.flags |= XD3_ADLER32_NOVER;
+    }
     xd3_config_stream(&stream, &config);
 
     source.blksize = BUFFER_SIZE;
     source.curblk = malloc(source.blksize);
 
     /* Load 1st block of stream. */
-    r = fseek(in, 0, SEEK_SET);
+    r = fseek(src, 0, SEEK_SET);
     if (r)
         return r;
-    source.onblk = fread((void*)source.curblk, 1, source.blksize, in);
+    source.onblk = fread((void *) source.curblk, 1, source.blksize, src);
     source.curblkno = 0;
     xd3_set_source(&stream, &source);
 
     Input_Buf = malloc(BUFFER_SIZE);
 
-    fseek(patch, 0, SEEK_SET);
-    do
-    {
-        Input_Buf_Read = fread(Input_Buf, 1, BUFFER_SIZE, patch);
-        if (Input_Buf_Read < BUFFER_SIZE)
-        {
+    fseek(in, 0, SEEK_SET);
+    do {
+        Input_Buf_Read = fread(Input_Buf, 1, BUFFER_SIZE, in);
+        if (Input_Buf_Read < BUFFER_SIZE) {
             xd3_set_flags(&stream, XD3_FLUSH | stream.flags);
         }
         xd3_avail_input(&stream, Input_Buf, Input_Buf_Read);
 
-        process:
+process:
+        if (encode)
+            ret = xd3_encode_input(&stream);
+        else
+            ret = xd3_decode_input(&stream);
 
-        ret = xd3_decode_input(&stream);
-
-        switch (ret)
-        {
+        switch (ret) {
             case XD3_INPUT:
                 continue;
 
             case XD3_OUTPUT:
                 r = fwrite(stream.next_out, 1, stream.avail_out, out);
-                if (r != (int)stream.avail_out)
+                if (r != (int) stream.avail_out)
                     return r;
                 xd3_consume_output(&stream);
                 goto process;
 
             case XD3_GETSRCBLK:
-                r = fseek(in, source.blksize * source.getblkno, SEEK_SET);
+                r = fseek(src, source.blksize * source.getblkno, SEEK_SET);
                 if (r)
                     return r;
-                source.onblk = fread((void*)source.curblk, 1, source.blksize, in);
+                source.onblk = fread((void *) source.curblk, 1, source.blksize, src);
                 source.curblkno = source.getblkno;
                 goto process;
 
@@ -154,7 +195,6 @@ int apply(FILE *patch, FILE *in, FILE *out)
                 goto process;
 
             default:
-                __android_log_print(ANDROID_LOG_ERROR, "XDelta3", "Error %d: %s", ret, stream.msg);
                 if (stream.msg != NULL) {
                     if (strcmp(stream.msg, "target window checksum mismatch") == 0)
                         return ERR_WRONG_CHECKSUM;
@@ -166,7 +206,7 @@ int apply(FILE *patch, FILE *in, FILE *out)
 
     free(Input_Buf);
 
-    free((void*)source.curblk);
+    free((void *) source.curblk);
     xd3_close_stream(&stream);
     xd3_free_stream(&stream);
 

app/src/main/java/org/emunix/unipatcher/Action.java

@@ -0,0 +1,35 @@
+/*
+ Copyright (c) 2017 Boris Timofeev
+
+ This file is part of UniPatcher.
+
+ UniPatcher is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ UniPatcher is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
+
+ */
+
+package org.emunix.unipatcher;
+
+public class Action {
+    public static final int SELECT_ROM_FILE = 1;
+    public static final int SELECT_PATCH_FILE = 2;
+    public static final int SELECT_SOURCE_FILE = 3;
+    public static final int SELECT_MODIFIED_FILE = 4;
+    public static final int SELECT_HEADER_FILE = 5;
+
+    public static final int APPLY_PATCH = 101;
+    public static final int CREATE_PATCH = 102;
+    public static final int SMD_FIX_CHECKSUM = 103;
+    public static final int SNES_ADD_SMC_HEADER = 104;
+    public static final int SNES_DELETE_SMC_HEADER = 105;
+}

app/src/main/java/org/emunix/unipatcher/Globals.java

@@ -1,51 +0,0 @@
-/*
-Copyright (C) 2013-2016 Boris Timofeev
-
-This file is part of UniPatcher.
-
-UniPatcher is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-UniPatcher is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-package org.emunix.unipatcher;
-
-public class Globals {
-    private static final String KEY = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA384jTCBEuJ8nCWaC4S6AFrnMQN4mBlmkOXHV3Xg5hlFOl8TkVwiCfqz8r20yJpEy0IJ1+3QRnlq59zadUxbkD+PacJlGB/r2b3mbKfu+m0K+e/0aL6eWupjMSIyPgpnbN3uswiBEGUb4ytzYF53ZKTbLARnruQdMnjV6+VyfwMgpor/48anVQawDARBj/AIAj6VGtRHLmg6DmKDyOGQ7uCgXSv+ysnBKJjtIX/L/5nQgL8Q+9jsr2knuWY7j9BmrtpUXaDH3Kb50M1TOCKiqxPGa8lInOOIndABWxcpqmSMXP06SPYOanUlEH7lT0jjqpHpFNx8hRTT9xf652rgMJwIDAQAB";
-    private static String cmdArgument = null;
-    private static boolean isFullVersion = false;
-
-    public static String getCmdArgument() {
-        return cmdArgument;
-    }
-
-    public static void setCmdArgument(String cmdArgument) {
-        Globals.cmdArgument = cmdArgument;
-    }
-
-    public static boolean isFullVersion() {
-        return isFullVersion;
-    }
-
-    public static void setFullVersion() {
-        isFullVersion = true;
-    }
-
-    public static String getKey() {
-        return KEY;
-    }
-
-    public static final int ACTION_PATCHING = 1;
-    public static final int ACTION_SMD_FIX_CHECKSUM = 2;
-    public static final int ACTION_SNES_ADD_SMC_HEADER = 3;
-    public static final int ACTION_SNES_DELETE_SMC_HEADER = 4;
-}

app/src/main/java/org/emunix/unipatcher/Settings.java

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2016 Boris Timofeev
+Copyright (C) 2016, 2017 Boris Timofeev
 
 This file is part of UniPatcher.
 
@@ -64,4 +64,38 @@ public class Settings {
         } else
             return prefs.getString("patch_directory", "/");
     }
+
+    public static String getOutputDir(Context context) {
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        return prefs.getString("output_directory", "");
+    }
+
+    public static boolean getIgnoreChecksum(Context context) {
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        return prefs.getBoolean("ignore_checksum", false);
+    }
+
+    public static void setPatchingSuccessful(Context context, Boolean isSuccessful) {
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        SharedPreferences.Editor editor = prefs.edit();
+        editor.putBoolean("patching_successful", isSuccessful);
+        editor.apply();
+    }
+
+    public static boolean getPatchingSuccessful(Context context) {
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        return prefs.getBoolean("patching_successful", false);
+    }
+
+    public static void setDontShowDonateSnackbarCount(Context context, int count) {
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        SharedPreferences.Editor editor = prefs.edit();
+        editor.putInt("dont_show_donate_snackbar", count);
+        editor.apply();
+    }
+
+    public static int getDontShowDonateSnackbarCount(Context context) {
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        return prefs.getInt("dont_show_donate_snackbar", 0);
+    }
 }

app/src/main/java/org/emunix/unipatcher/UniPatcher.java

@@ -0,0 +1,57 @@
+/*
+ Copyright (c) 2017 Boris Timofeev
+
+ This file is part of UniPatcher.
+
+ UniPatcher is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ UniPatcher is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
+
+ */
+
+package org.emunix.unipatcher;
+
+import android.app.Application;
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
+import android.content.Context;
+import android.os.Build;
+
+public class UniPatcher extends Application {
+    private static String appArgument = null;
+    public static final String NOTIFICATION_CHANNEL_ID = "notifications";
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        initNotificationChannel();
+    }
+
+    public static String getAppArgument() {
+        return appArgument;
+    }
+
+    public static void setAppArgument(String appArgument) {
+        UniPatcher.appArgument = appArgument;
+    }
+
+    public void initNotificationChannel() {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
+            return;
+        }
+        NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
+        NotificationChannel channel = new NotificationChannel(NOTIFICATION_CHANNEL_ID,
+                getString(R.string.notification_channel_name),
+                NotificationManager.IMPORTANCE_DEFAULT);
+        manager.createNotificationChannel(channel);
+    }
+}

app/src/main/java/org/emunix/unipatcher/Utils.java

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2013-2016 Boris Timofeev
+Copyright (C) 2013-2017 Boris Timofeev
 
 This file is part of UniPatcher.
 
@@ -22,10 +22,9 @@ package org.emunix.unipatcher;
 import android.Manifest;
 import android.annotation.TargetApi;
 import android.content.Context;
+import android.content.Intent;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
-import android.net.ConnectivityManager;
-import android.net.NetworkInfo;
 import android.os.Build;
 import android.os.StatFs;
 import android.support.v4.content.ContextCompat;
@@ -34,12 +33,14 @@ import android.util.Log;
 
 import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.FilenameUtils;
+import org.apache.commons.io.IOUtils;
 
 import java.io.File;
+import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.util.ArrayList;
+import java.nio.channels.FileChannel;
 import java.util.Arrays;
 import java.util.Locale;
 
@@ -48,6 +49,14 @@ public class Utils {
 
     private static final int BUFFER_SIZE = 10240; // 10 Kb
 
+    public static void startForegroundService(Context context, Intent intent) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
+            context.startService(intent);
+        } else {
+            context.startForegroundService(intent);
+        }
+    }
+
     public static String getAppVersion(Context context) {
         String versionName = "N/A";
         try {
@@ -64,12 +73,6 @@ public class Utils {
                 == PackageManager.PERMISSION_GRANTED;
     }
 
-    public static boolean isOnline(Context context) {
-        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
-        NetworkInfo netInfo = cm.getActiveNetworkInfo();
-        return netInfo != null && netInfo.isConnectedOrConnecting();
-    }
-
     public static int dpToPx(Context context, int dp) {
         DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();
         return Math.round(dp * (displayMetrics.xdpi / DisplayMetrics.DENSITY_DEFAULT));
@@ -79,17 +82,20 @@ public class Utils {
     public static long getFreeSpace(File file) {
         StatFs stat = new StatFs(file.getPath());
         long bytesAvailable;
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
             bytesAvailable = stat.getAvailableBytes();
-        else
-            //noinspection deprecation
+        } else
+        //noinspection deprecation
+        {
             bytesAvailable = (long) stat.getBlockSize() * (long) stat.getAvailableBlocks();
+        }
         return bytesAvailable;
     }
 
     public static void copyFile(Context context, File from, File to) throws IOException {
-        if (Utils.getFreeSpace(to.getParentFile()) < from.length())
+        if (Utils.getFreeSpace(to.getParentFile()) < from.length()) {
             throw new IOException(context.getString(R.string.notify_error_not_enough_space));
+        }
 
         try {
             FileUtils.copyFile(from, to);
@@ -100,12 +106,18 @@ public class Utils {
 
     public static void moveFile(Context context, File from, File to) throws IOException {
         FileUtils.deleteQuietly(to);
-        if(!from.renameTo(to)) {
+        if (!from.renameTo(to)) {
             copyFile(context, from, to);
             FileUtils.deleteQuietly(from);
         }
     }
 
+    public static void truncateFile(File f, long size) throws IOException {
+        FileChannel channel = new FileOutputStream(f, true).getChannel();
+        channel.truncate(size);
+        IOUtils.closeQuietly(channel);
+    }
+
     public static void copy(InputStream from, OutputStream to, long size) throws IOException {
         byte[] buffer = new byte[BUFFER_SIZE];
         int c;
@@ -141,24 +153,28 @@ public class Utils {
 
     public static String bytesToHexString(byte[] bytes) {
         StringBuilder sb = new StringBuilder();
-        for(int i = 0; i < bytes.length ;i++) {
+        for (int i = 0; i < bytes.length; i++) {
             sb.append(Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1));
         }
         return sb.toString();
     }
 
     public static boolean isPatch(File file) {
-        String[] patches = {"ips", "ups", "bps", "ppf", "dps", "xdelta", "xdelta3", "vcdiff"};
+        String[] patches =
+                {"ips", "ups", "bps", "aps", "ppf", "dps", "ebp", "xdelta", "xdelta3", "xd", "vcdiff"};
         String ext = FilenameUtils.getExtension(file.getName()).toLowerCase(Locale.getDefault());
         for (String patch : patches) {
-            if (ext.equals(patch))
-                return true;
+            if (ext.equals(patch)) return true;
         }
         return false;
     }
 
     public static boolean isArchive(String path) {
         String ext = FilenameUtils.getExtension(path).toLowerCase(Locale.getDefault());
-        return ext.equals("zip") || ext.equals("rar") || ext.equals("7z") || ext.equals("gz") || ext.equals("tgz");
+        return ext.equals("zip")
+                || ext.equals("rar")
+                || ext.equals("7z")
+                || ext.equals("gz")
+                || ext.equals("tgz");
     }
 }

app/src/main/java/org/emunix/unipatcher/WorkerService.java

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2013-2016 Boris Timofeev
+Copyright (C) 2013-2017 Boris Timofeev
 
 This file is part of UniPatcher.
 
@@ -24,24 +24,27 @@ import android.app.Notification;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.content.Intent;
+import android.os.Build;
 import android.os.PowerManager;
 import android.support.v4.app.NotificationCompat;
 
 import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.FilenameUtils;
-import org.emunix.unipatcher.patch.BPS;
-import org.emunix.unipatcher.patch.DPS;
-import org.emunix.unipatcher.patch.EBP;
-import org.emunix.unipatcher.patch.IPS;
-import org.emunix.unipatcher.patch.PPF;
-import org.emunix.unipatcher.patch.Patch;
-import org.emunix.unipatcher.patch.PatchException;
-import org.emunix.unipatcher.patch.UPS;
-import org.emunix.unipatcher.patch.XDelta;
+import org.emunix.unipatcher.patcher.APS;
+import org.emunix.unipatcher.patcher.BPS;
+import org.emunix.unipatcher.patcher.DPS;
+import org.emunix.unipatcher.patcher.EBP;
+import org.emunix.unipatcher.patcher.IPS;
+import org.emunix.unipatcher.patcher.PPF;
+import org.emunix.unipatcher.patcher.Patcher;
+import org.emunix.unipatcher.patcher.PatchException;
+import org.emunix.unipatcher.patcher.UPS;
+import org.emunix.unipatcher.patcher.XDelta;
 import org.emunix.unipatcher.tools.RomException;
 import org.emunix.unipatcher.tools.SmdFixChecksum;
 import org.emunix.unipatcher.tools.SnesSmcHeader;
 import org.emunix.unipatcher.ui.activity.MainActivity;
+import org.emunix.unipatcher.ui.notify.CreatePatchNotify;
 import org.emunix.unipatcher.ui.notify.Notify;
 import org.emunix.unipatcher.ui.notify.PatchingNotify;
 import org.emunix.unipatcher.ui.notify.SmdFixChecksumNotify;
@@ -62,16 +65,7 @@ public class WorkerService extends IntentService {
     protected void onHandleIntent(Intent intent) {
         // if user deny write storage permission
         if (!Utils.hasStoragePermission(this)) {
-            Intent notificationIntent = new Intent(this, MainActivity.class);
-            NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
-            Notification notify = new NotificationCompat.Builder(this)
-                    .setContentTitle(getString(R.string.notify_error))
-                    .setContentText(getString(R.string.permissions_storage_error_notify_access_denied))
-                    .setSmallIcon(R.drawable.ic_stat_patching)
-                    .setContentIntent(PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_CANCEL_CURRENT))
-                    .setAutoCancel(true)
-                    .build();
-            nm.notify(0, notify);
+            showErrorNotification(getString(R.string.permissions_storage_error_notify_access_denied));
             return;
         }
 
@@ -82,16 +76,19 @@ public class WorkerService extends IntentService {
         try {
             int action = intent.getIntExtra("action", 0);
             switch (action) {
-                case Globals.ACTION_PATCHING:
+                case Action.APPLY_PATCH:
                     actionPatching(intent);
                     break;
-                case Globals.ACTION_SMD_FIX_CHECKSUM:
+                case Action.CREATE_PATCH:
+                    actionCreatePatch(intent);
+                    break;
+                case Action.SMD_FIX_CHECKSUM:
                     actionSmdFixChecksum(intent);
                     break;
-                case Globals.ACTION_SNES_ADD_SMC_HEADER:
+                case Action.SNES_ADD_SMC_HEADER:
                     actionSnesAddSmcHeader(intent);
                     break;
-                case Globals.ACTION_SNES_DELETE_SMC_HEADER:
+                case Action.SNES_DELETE_SMC_HEADER:
                     actionSnesDeleteSmcHeader(intent);
                     break;
             }
@@ -105,11 +102,35 @@ public class WorkerService extends IntentService {
         File romFile = new File(intent.getStringExtra("romPath"));
         File patchFile = new File(intent.getStringExtra("patchPath"));
         File outputFile = new File(intent.getStringExtra("outputPath"));
-        Patch patcher = null;
+        Patcher patcher = null;
 
-        if(!fileExists(patchFile) || !fileExists(romFile))
+        if (!fileExists(patchFile) || !fileExists(romFile))
             return;
 
+        // create output dir
+        try {
+            if (!outputFile.getParentFile().exists()) {
+                FileUtils.forceMkdirParent(outputFile);
+            }
+        } catch (IOException | SecurityException e) {
+            String text = getString(R.string.notify_error_unable_to_create_directory, outputFile.getParent());
+            showErrorNotification(text);
+            return;
+        }
+
+        // check access to output dir
+        try {
+            if (!outputFile.getParentFile().canWrite()) {
+                String text = getString(R.string.notify_error_unable_to_write_to_directory, outputFile.getParent());
+                showErrorNotification(text);
+                return;
+            }
+        } catch (SecurityException e) {
+            String text = getString(R.string.notify_error_unable_to_write_to_directory, outputFile.getParent());
+            showErrorNotification(text);
+            return;
+        }
+
         String ext = FilenameUtils.getExtension(patchFile.getName()).toLowerCase(Locale.getDefault());
         if ("ips".equals(ext))
             patcher = new IPS(this, patchFile, romFile, outputFile);
@@ -119,35 +140,94 @@ public class WorkerService extends IntentService {
             patcher = new BPS(this, patchFile, romFile, outputFile);
         else if ("ppf".equals(ext))
             patcher = new PPF(this, patchFile, romFile, outputFile);
+        else if ("aps".equals(ext))
+            patcher = new APS(this, patchFile, romFile, outputFile);
         else if ("ebp".equals(ext))
             patcher = new EBP(this, patchFile, romFile, outputFile);
         else if ("dps".equals(ext))
             patcher = new DPS(this, patchFile, romFile, outputFile);
-        else if ("xdelta".equals(ext) || "xdelta3".equals(ext) || "vcdiff".equals(ext))
+        else if ("xdelta".equals(ext) || "xdelta3".equals(ext) || "xd".equals(ext) || "vcdiff".equals(ext))
             patcher = new XDelta(this, patchFile, romFile, outputFile);
         else
             errorMsg = getString(R.string.notify_error_unknown_patch_format);
 
-        Notify notify = new PatchingNotify(this, outputFile.getName());
-
         if (errorMsg != null) {
-            notify.showResult(errorMsg);
+            showErrorNotification(errorMsg);
             return;
         }
 
+        Notify notify = new PatchingNotify(this, outputFile.getName());
         startForeground(notify.getID(), notify.getNotifyBuilder().build());
 
         try {
             if ("ppf".equals(ext))
                 Utils.copyFile(this, romFile, outputFile);
-            patcher.apply();
+            patcher.apply(Settings.getIgnoreChecksum(this));
+            Settings.setPatchingSuccessful(this, true);
         } catch (PatchException | IOException e) {
             if (Utils.getFreeSpace(outputFile.getParentFile()) == 0) {
                 errorMsg = getString(R.string.notify_error_not_enough_space);
             } else {
                 errorMsg = e.getMessage();
             }
-            FileUtils.deleteQuietly(outputFile);
+            if (outputFile.isFile()) {
+                FileUtils.deleteQuietly(outputFile);
+            }
+        } finally {
+            stopForeground(true);
+        }
+        notify.showResult(errorMsg);
+    }
+
+    private void actionCreatePatch(Intent intent) {
+        String errorMsg = null;
+        File sourceFile = new File(intent.getStringExtra("sourcePath"));
+        File modifiedFile = new File(intent.getStringExtra("modifiedPath"));
+        File patchFile = new File(intent.getStringExtra("patchPath"));
+
+        if (!fileExists(sourceFile) || !fileExists(modifiedFile))
+            return;
+
+        // create output dir
+        try {
+            if (!patchFile.getParentFile().exists()) {
+                FileUtils.forceMkdirParent(patchFile);
+            }
+        } catch (IOException | SecurityException e) {
+            String text = getString(R.string.notify_error_unable_to_create_directory, patchFile.getParent());
+            showErrorNotification(text);
+            return;
+        }
+
+        // check access to output dir
+        try {
+            if (!patchFile.getParentFile().canWrite()) {
+                String text = getString(R.string.notify_error_unable_to_write_to_directory, patchFile.getParent());
+                showErrorNotification(text);
+                return;
+            }
+        } catch (SecurityException e) {
+            String text = getString(R.string.notify_error_unable_to_write_to_directory, patchFile.getParent());
+            showErrorNotification(text);
+            return;
+        }
+
+        XDelta patcher = new XDelta(this, patchFile, sourceFile, modifiedFile);
+
+        Notify notify = new CreatePatchNotify(this, patchFile.getName());
+
+        startForeground(notify.getID(), notify.getNotifyBuilder().build());
+
+        try {
+            patcher.create();
+            Settings.setPatchingSuccessful(this, true);
+        } catch (PatchException | IOException e) {
+            if (Utils.getFreeSpace(patchFile.getParentFile()) == 0) {
+                errorMsg = getString(R.string.notify_error_not_enough_space);
+            } else {
+                errorMsg = e.getMessage();
+            }
+            FileUtils.deleteQuietly(patchFile);
         } finally {
             stopForeground(true);
         }
@@ -158,7 +238,7 @@ public class WorkerService extends IntentService {
         String errorMsg = null;
         File romFile = new File(intent.getStringExtra("romPath"));
 
-        if(!fileExists(romFile))
+        if (!fileExists(romFile))
             return;
 
         SmdFixChecksum fixer = new SmdFixChecksum(this, romFile);
@@ -182,7 +262,7 @@ public class WorkerService extends IntentService {
         File romFile = new File(intent.getStringExtra("romPath"));
         String headerPath = intent.getStringExtra("headerPath");
 
-        if(!fileExists(romFile))
+        if (!fileExists(romFile))
             return;
 
         SnesSmcHeader worker = new SnesSmcHeader();
@@ -212,7 +292,7 @@ public class WorkerService extends IntentService {
 
         File romFile = new File(intent.getStringExtra("romPath"));
 
-        if(!fileExists(romFile))
+        if (!fileExists(romFile))
             return;
 
         SnesSmcHeader worker = new SnesSmcHeader();
@@ -236,19 +316,31 @@ public class WorkerService extends IntentService {
 
     private boolean fileExists(File f) {
         if (!f.exists() || f.isDirectory()) {
-            Intent notificationIntent = new Intent(this, MainActivity.class);
             String text = getString(R.string.notify_error_file_not_found).concat(": ").concat(f.getName());
-            NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
-            Notification notify = new NotificationCompat.Builder(this)
-                    .setContentTitle(getString(R.string.notify_error))
-                    .setContentText(text)
-                    .setSmallIcon(R.drawable.ic_stat_patching)
-                    .setContentIntent(PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_CANCEL_CURRENT))
-                    .setAutoCancel(true)
-                    .build();
-            nm.notify(0, notify);
+            showErrorNotification(text);
             return false;
         }
         return true;
     }
+
+    private void showErrorNotification(String text) {
+        Intent notificationIntent = new Intent(this, MainActivity.class);
+        NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
+        Notification notify = new NotificationCompat.Builder(this, UniPatcher.NOTIFICATION_CHANNEL_ID)
+                .setContentTitle(getString(R.string.notify_error))
+                .setContentText(text)
+                .setSmallIcon(R.drawable.ic_gamepad_variant_white_24dp)
+                .setContentIntent(PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_CANCEL_CURRENT))
+                .setAutoCancel(true)
+                .setStyle(new NotificationCompat.BigTextStyle()
+                        .bigText(text))
+                .build();
+
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
+            nm.notify(32768, notify);
+        } else {
+            startForeground(32768, notify);
+            stopForeground(STOP_FOREGROUND_DETACH);
+        }
+    }
 }

app/src/main/java/org/emunix/unipatcher/ad/AdMobController.java

@@ -1,97 +0,0 @@
-/*
-Copyright (C) 2014 Boris Timofeev
-
-This file is part of UniPatcher.
-
-UniPatcher is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-UniPatcher is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-package org.emunix.unipatcher.ad;
-
-import android.content.Context;
-import android.view.View;
-import android.widget.FrameLayout;
-
-import com.google.android.gms.ads.AdListener;
-import com.google.android.gms.ads.AdRequest;
-import com.google.android.gms.ads.AdView;
-
-import org.emunix.unipatcher.Globals;
-
-public class AdMobController implements AdsController {
-
-    private static final String ADMOB_ID = "ca-app-pub-2445378722408015/8831379284";
-    private AdView adView;
-    private final Context context;
-
-    public AdMobController(Context c, FrameLayout layout) {
-        context = c;
-        createView(layout);
-    }
-
-    public void createView(FrameLayout layout) {
-        adView = new AdView(context);
-        adView.setAdSize(com.google.android.gms.ads.AdSize.SMART_BANNER);
-        adView.setAdUnitId(ADMOB_ID);
-        AdRequest adRequest = new AdRequest.Builder()
-                .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
-                .addTestDevice("018B7216B142ABE97F9BFCD880C02EBC")  // htc one v
-                .addTestDevice("64F8D0EE579BA448E833172DB2D91CBB")  // lg nexus 5
-                .build();
-        adView.setAdListener(new AdListener() {
-            @Override
-            public void onAdLoaded() {
-                super.onAdLoaded();
-                if (Globals.isFullVersion()) {
-                    adView.setVisibility(View.GONE);
-                }
-            }
-            @Override
-            public void onAdOpened() {
-            }
-        });
-        adView.loadAd(adRequest);
-        layout.addView(adView);
-    }
-
-    public void show(boolean show) {
-        if (adView != null) {
-            if (!show) {
-                adView.setVisibility(View.GONE);
-            } else if (!Globals.isFullVersion()) {
-                adView.setVisibility(View.VISIBLE);
-            }
-        }
-    }
-
-    public void pause() {
-        if (adView != null) {
-            adView.pause();
-        }
-    }
-
-    public void resume() {
-        if (adView != null) {
-            adView.resume();
-        }
-    }
-
-    public void start() {}
-
-    public void destroy() {
-        if (adView != null) {
-            adView.destroy();
-        }
-    }
-}

app/src/main/java/org/emunix/unipatcher/ad/AdsController.java

@@ -1,31 +0,0 @@
-/*
-Copyright (C) 2014 Boris Timofeev
-
-This file is part of UniPatcher.
-
-UniPatcher is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-UniPatcher is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-package org.emunix.unipatcher.ad;
-
-import android.widget.FrameLayout;
-
-interface AdsController {
-    void createView(FrameLayout layout);
-    void show(boolean show);
-    void start();
-    void destroy();
-    void resume();
-    void pause();
-}

app/src/main/java/org/emunix/unipatcher/patcher/APS.java

@@ -0,0 +1,84 @@
+/*
+Copyright (C) 2017 Boris Timofeev
+
+This file is part of UniPatcher.
+
+UniPatcher is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+UniPatcher is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package org.emunix.unipatcher.patcher;
+
+import android.content.Context;
+
+import org.apache.commons.io.IOUtils;
+import org.emunix.unipatcher.R;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.util.Arrays;
+
+public class APS extends Patcher {
+
+    public static final int NOT_APS_PATCH = 0;
+    public static final int APS_N64_PATCH = 1;
+    public static final int APS_GBA_PATCH = 2;
+
+    private static final byte[] APS_N64_MAGIC = {0x41, 0x50, 0x53, 0x31, 0x30}; // APS10
+    private static final byte[] APS_GBA_MAGIC = {0x41, 0x50, 0x53, 0x31};       // APS1
+
+    public APS(Context context, File patch, File rom, File output) {
+        super(context, patch, rom, output);
+    }
+
+    @Override
+    public void apply(boolean ignoreChecksum) throws PatchException, IOException {
+        Patcher aps = null;
+        switch (checkAPS(patchFile)) {
+            case APS_N64_PATCH:
+                aps = new APS_N64(context, patchFile, romFile, outputFile);
+                break;
+            case APS_GBA_PATCH:
+                aps = new APS_GBA(context, patchFile, romFile, outputFile);
+                break;
+            case NOT_APS_PATCH:
+                throw new PatchException(context.getString(R.string.notify_error_not_aps_patch));
+        }
+
+        aps.apply(ignoreChecksum);
+    }
+
+    public int checkAPS(File file) throws PatchException, IOException {
+        FileInputStream stream = null;
+        try {
+            stream = new FileInputStream(file);
+            byte[] magicN64 = new byte[5];
+            int count = stream.read(magicN64);
+            if (count < 5)
+                throw new PatchException(context.getString(R.string.notify_error_not_aps_patch));
+            if (Arrays.equals(magicN64, APS_N64_MAGIC)) {
+                return APS_N64_PATCH;
+            } else {
+                byte[] magicGBA = new byte[4];
+                System.arraycopy(magicN64, 0, magicGBA, 0, 4);
+                if (Arrays.equals(magicGBA, APS_GBA_MAGIC)) {
+                    return APS_GBA_PATCH;
+                }
+            }
+        } finally {
+            IOUtils.closeQuietly(stream);
+        }
+        return NOT_APS_PATCH;
+    }
+}

app/src/main/java/org/emunix/unipatcher/patcher/APS_GBA.java

@@ -0,0 +1,194 @@
+/*
+Copyright (C) 2017 Boris Timofeev
+
+This file is part of UniPatcher.
+
+UniPatcher is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+UniPatcher is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package org.emunix.unipatcher.patcher;
+
+import android.content.Context;
+
+import org.apache.commons.io.IOUtils;
+import org.emunix.unipatcher.R;
+import org.emunix.unipatcher.Utils;
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.RandomAccessFile;
+import java.util.Arrays;
+
+public class APS_GBA extends Patcher {
+    private static final byte[] MAGIC_NUMBER = {0x41, 0x50, 0x53, 0x31}; // APS1
+    private static final int CHUNK_SIZE = 65536;
+
+    private static final int[] table = { // 16-bit CRC-CCITT table
+            0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
+            0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
+            0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
+            0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
+            0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485,
+            0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
+            0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4,
+            0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
+            0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
+            0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
+            0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12,
+            0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
+            0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41,
+            0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
+            0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
+            0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
+            0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F,
+            0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
+            0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E,
+            0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
+            0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
+            0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
+            0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C,
+            0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
+            0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB,
+            0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
+            0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
+            0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
+            0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9,
+            0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
+            0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8,
+            0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
+    };
+
+    public APS_GBA(Context context, File patch, File rom, File output) {
+        super(context, patch, rom, output);
+    }
+
+    @Override
+    public void apply(boolean ignoreChecksum) throws PatchException, IOException {
+        long fileSize1, fileSize2, bytesLeft, offset;
+        int crc, patchCrc1, patchCrc2, pCount, oCount;
+        boolean isOriginal = false;
+        boolean isModified = false;
+
+        byte[] romBuf = new byte[CHUNK_SIZE];
+        byte[] patchBuf = new byte[CHUNK_SIZE];
+
+        BufferedInputStream patchStream = null;
+        RandomAccessFile output = null;
+
+        Utils.copyFile(context, romFile, outputFile);
+
+        try {
+            patchStream = new BufferedInputStream(new FileInputStream(patchFile));
+            output = new RandomAccessFile(outputFile, "rw");
+
+            byte[] magic = new byte[4];
+            pCount = patchStream.read(magic);
+            if (pCount < 4 || !Arrays.equals(magic, MAGIC_NUMBER))
+                throw new PatchException(context.getString(R.string.notify_error_not_aps_patch));
+
+            fileSize1 = readLEInt(patchStream);
+            fileSize2 = readLEInt(patchStream);
+            if (fileSize1 < 0 || fileSize2 < 0)
+                throw new PatchException(context.getString(R.string.notify_error_not_aps_patch));
+
+            bytesLeft = patchFile.length() - 12;
+
+            while (bytesLeft > 0) {
+                offset = readLEInt(patchStream);
+                patchCrc1 = readLEChar(patchStream);
+                patchCrc2 = readLEChar(patchStream);
+                bytesLeft -= 8;
+                if (offset < 0 || patchCrc1 < 0 || patchCrc2 < 0)
+                    throw new PatchException(context.getString(R.string.notify_error_not_aps_patch));
+
+                output.seek(offset);
+                oCount = output.read(romBuf);
+                pCount = patchStream.read(patchBuf);
+                bytesLeft -= CHUNK_SIZE;
+                if (pCount < CHUNK_SIZE)
+                    throw new PatchException(context.getString(R.string.notify_error_not_aps_patch));
+
+                if (oCount < CHUNK_SIZE) {
+                    if (oCount < 0) oCount = 0;
+                    for (int i = oCount; i < CHUNK_SIZE; i++)
+                        romBuf[i] = 0x0;
+                }
+
+                crc = crc16(romBuf);
+
+                for (int i = 0; i < CHUNK_SIZE; i++)
+                    romBuf[i] ^= patchBuf[i];
+
+                if (crc == patchCrc1) {
+                    isOriginal = true;
+                } else if (crc == patchCrc2) {
+                    isModified = true;
+                } else {
+                    if (!ignoreChecksum)
+                        throw new PatchException(context.getString(R.string.notify_error_rom_not_compatible_with_patch));
+                }
+                if (isOriginal && isModified)
+                    throw new PatchException(context.getString(R.string.notify_error_not_aps_patch));
+
+                output.seek(offset);
+                output.write(romBuf);
+            }
+        } finally {
+            IOUtils.closeQuietly(patchStream);
+            IOUtils.closeQuietly(output);
+        }
+
+        if (isOriginal) {
+            Utils.truncateFile(outputFile, fileSize2);
+        } else if (isModified) {
+            Utils.truncateFile(outputFile, fileSize1);
+        }
+    }
+
+    private long readLEInt(InputStream stream) throws IOException {
+        long result = 0;
+        int x;
+        for (int i = 0; i < 4; i++) {
+            x = stream.read();
+            if (x == -1)
+                return -1;
+            result += ((long) x) << (i * 8);
+        }
+        return result;
+    }
+
+    private int readLEChar(InputStream stream) throws IOException {
+        int result = 0;
+        int x;
+        for (int i = 0; i < 2; i++) {
+            x = stream.read();
+            if (x == -1)
+                return -1;
+            result += x << (i * 8);
+        }
+        return result;
+    }
+
+    private int crc16(byte[] data) {
+        int crc = 0xffff;
+        for (byte b : data) {
+            crc = (crc << 8) ^ table[((crc >> 8) ^ b) & 0xff];
+            crc = (short) crc & 0xffff;
+        }
+        return crc;
+    }
+}

app/src/main/java/org/emunix/unipatcher/patcher/APS_N64.java

@@ -0,0 +1,234 @@
+/*
+Copyright (C) 2017 Boris Timofeev
+
+This file is part of UniPatcher.
+
+UniPatcher is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+UniPatcher is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package org.emunix.unipatcher.patcher;
+
+import android.content.Context;
+
+import org.apache.commons.io.IOUtils;
+import org.emunix.unipatcher.R;
+import org.emunix.unipatcher.Utils;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.RandomAccessFile;
+import java.util.Arrays;
+
+public class APS_N64 extends Patcher {
+
+    private static final byte[] MAGIC_NUMBER = {0x41, 0x50, 0x53, 0x31, 0x30}; // APS10
+    private static final int TYPE_SIMPLE_PATCH = 0;
+    private static final int TYPE_N64_PATCH = 1;
+    private static final int ENCODING_SIMPLE = 0;
+
+    public APS_N64(Context context, File patch, File rom, File output) {
+        super(context, patch, rom, output);
+    }
+
+    @Override
+    public void apply(boolean ignoreChecksum) throws PatchException, IOException {
+        BufferedInputStream romStream = null;
+        BufferedInputStream patchStream = null;
+        BufferedOutputStream outputStream = null;
+
+        try {
+            patchStream = new BufferedInputStream(new FileInputStream(patchFile));
+
+            long patchSize = patchFile.length();
+            long romSize = romFile.length();
+            long outSize;
+            int romPos = 0;
+            int outPos = 0;
+            int patchPos = 0;
+            long offset, size;
+
+            // check magic string
+            byte[] magic = new byte[5];
+            size = patchStream.read(magic);
+            if (size != 5 || !Arrays.equals(magic, MAGIC_NUMBER))
+                throw new PatchException(context.getString(R.string.notify_error_not_aps_patch));
+            patchPos += 5;
+
+            // read and check type of the patch
+            int patchType = patchStream.read();
+            if ((patchType != TYPE_SIMPLE_PATCH) && (patchType != TYPE_N64_PATCH))
+                throw new PatchException(context.getString(R.string.notify_error_not_aps_patch));
+            patchPos++;
+
+            // check encoding method
+            int encoding = patchStream.read();
+            if (encoding != ENCODING_SIMPLE)
+                throw new PatchException(context.getString(R.string.notify_error_not_aps_patch));
+            patchPos++;
+
+            // skip description
+            byte[] description = new byte[50];
+            size = patchStream.read(description);
+            if (size < 50)
+                throw new PatchException(context.getString(R.string.notify_error_not_aps_patch));
+            patchPos += 50;
+
+            // validate ROM
+            if (patchType == TYPE_N64_PATCH) {
+                int endianness = patchStream.read();
+                int cardID = ((patchStream.read() & 0xff) << 8) + (patchStream.read() & 0xff);
+                int country = patchStream.read();
+                byte[] crc = new byte[8];
+                patchStream.read(crc);
+                if (!ignoreChecksum) {
+                    if (!validateROM(endianness, cardID, country, crc))
+                        throw new PatchException(context.getString(R.string.notify_error_rom_not_compatible_with_patch));
+                }
+                // skip bytes for future expansion
+                byte[] skip = new byte[5];
+                patchStream.read(skip);
+                patchPos += 17;
+            }
+
+            // read size of destination image.
+            outSize = readLELong(patchStream);
+            patchPos += 4;
+
+            romStream = new BufferedInputStream(new FileInputStream(romFile));
+            outputStream = new BufferedOutputStream(new FileOutputStream(outputFile));
+
+            // apply patch
+            while (patchPos < patchSize) {
+                offset = readLELong(patchStream);
+                if (offset < 0)
+                    throw new PatchException(context.getString(R.string.notify_error_patch_corrupted));
+                patchPos += 4;
+
+                // copy data from rom to out
+                if (offset <= romSize) {
+                    if (outPos < offset) {
+                        size = offset - outPos;
+                        Utils.copy(romStream, outputStream, size);
+                        romPos += size;
+                        outPos += size;
+                    }
+                } else {
+                    if (outPos < romSize) {
+                        size = (int) romSize - outPos;
+                        Utils.copy(romStream, outputStream, size);
+                        romPos += size;
+                        outPos += size;
+                    }
+                    if (outPos < offset) {
+                        size = offset - outPos;
+                        Utils.copy(size, (byte) 0x0, outputStream);
+                        outPos += size;
+                    }
+                }
+
+                // copy data from patch to out
+                size = patchStream.read();
+                patchPos++;
+                if (size != 0) {
+                    byte[] data = new byte[(int) size];
+                    patchStream.read(data);
+                    patchPos += size;
+                    outputStream.write(data);
+                    outPos += size;
+                } else { // RLE
+                    byte val = (byte) patchStream.read();
+                    size = patchStream.read();
+                    patchPos += 2;
+                    byte[] data = new byte[(int) size];
+                    Arrays.fill(data, val);
+                    outputStream.write(data);
+                    outPos += size;
+                }
+
+                // skip rom data
+                if (offset <= romSize) {
+                    if (romPos + size > romSize) {
+                        romPos = (int) romSize;
+                    } else {
+                        byte[] buf = new byte[(int) size];
+                        romStream.read(buf);
+                        romPos += size;
+                    }
+                }
+            }
+            // write rom tail and trim
+            Utils.copy(romStream, outputStream, outSize - outPos);
+        } finally {
+            IOUtils.closeQuietly(romStream);
+            IOUtils.closeQuietly(patchStream);
+            IOUtils.closeQuietly(outputStream);
+        }
+    }
+
+    private boolean validateROM(int endianness, int cartID, int country, byte[] crc) throws IOException {
+        RandomAccessFile rom = new RandomAccessFile(romFile, "r");
+        int val;
+        try {
+            // check endianness
+            val = rom.read();
+            if ((endianness == 1 && val != 0x80) || (endianness == 0 && val != 0x37))
+                return false;
+
+            // check cartID
+            rom.seek(0x3c);
+            if (endianness == 1) {
+                val = ((rom.read() & 0xff) << 8) + (rom.read() & 0xff);
+            } else {
+                val = (rom.read() & 0xff) + ((rom.read() & 0xff) << 8);
+            }
+            if (cartID != val)
+                return false;
+
+            // check country
+            val = rom.read();
+            if (endianness == 0)
+                val = rom.read();
+            if (country != val)
+                return false;
+
+            // check crc
+            byte[] buf = new byte[8];
+            rom.seek(0x10);
+            rom.read(buf);
+            if (endianness == 0) {
+                byte tmp;
+                for (int i = 0; i < buf.length; i += 2) {
+                    tmp = buf[i];
+                    buf[i] = buf[i + 1];
+                    buf[i + 1] = tmp;
+                }
+            }
+            if (!Arrays.equals(crc, buf))
+                return false;
+        } finally {
+            IOUtils.closeQuietly(rom);
+        }
+        return true;
+    }
+
+    private long readLELong(InputStream stream) throws IOException {
+        return (stream.read() & 0xff) + ((stream.read() & 0xff) << 8)
+                + ((stream.read() & 0xff) << 16) + ((stream.read() & 0xff) << 24);
+    }
+}

app/src/main/java/org/emunix/unipatcher/patcher/BPS.java

@@ -17,7 +17,7 @@ You should have received a copy of the GNU General Public License
 along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-package org.emunix.unipatcher.patch;
+package org.emunix.unipatcher.patcher;
 
 import android.content.Context;
 
@@ -35,7 +35,7 @@ import java.nio.channels.FileChannel;
 import java.util.Arrays;
 import java.util.zip.CRC32;
 
-public class BPS extends Patch {
+public class BPS extends Patcher {
 
     private static final byte[] MAGIC_NUMBER = {0x42, 0x50, 0x53, 0x31}; // "BPS1"
     private static final byte SOURCE_READ = 0b00;
@@ -50,7 +50,7 @@ public class BPS extends Patch {
     }
 
     @Override
-    public void apply() throws PatchException, IOException {
+    public void apply(boolean ignoreChecksum) throws PatchException, IOException {
 
         if (patchFile.length() < 19) {
             throw new PatchException(context.getString(R.string.notify_error_patch_corrupted));
@@ -68,9 +68,11 @@ public class BPS extends Patch {
             if (bpsCrc.getPatchFileCRC() != bpsCrc.getRealPatchCRC())
                 throw new PatchException(context.getString(R.string.notify_error_patch_corrupted));
 
-            long realRomCrc = FileUtils.checksumCRC32(romFile);
-            if (realRomCrc != bpsCrc.getInputFileCRC()) {
-                throw new PatchException(context.getString(R.string.notify_error_rom_not_compatible_with_patch));
+            if (!ignoreChecksum) {
+                long realRomCrc = FileUtils.checksumCRC32(romFile);
+                if (realRomCrc != bpsCrc.getInputFileCRC()) {
+                    throw new PatchException(context.getString(R.string.notify_error_rom_not_compatible_with_patch));
+                }
             }
 
             patch = new RandomAccessFile(patchFile, "r").getChannel();
@@ -133,9 +135,11 @@ public class BPS extends Patch {
             IOUtils.closeQuietly(output);
         }
 
-        long realOutCrc = FileUtils.checksumCRC32(outputFile);
-        if (realOutCrc != bpsCrc.getOutputFileCRC())
-            throw new PatchException(context.getString(R.string.notify_error_wrong_checksum_after_patching));
+        if(!ignoreChecksum) {
+            long realOutCrc = FileUtils.checksumCRC32(outputFile);
+            if (realOutCrc != bpsCrc.getOutputFileCRC())
+                throw new PatchException(context.getString(R.string.notify_error_wrong_checksum_after_patching));
+        }
     }
 
     // decode pointer
@@ -250,7 +254,7 @@ public class BPS extends Patch {
                 throw new PatchException(context.getString(R.string.notify_error_patch_corrupted));
             return new BpsCrc(inputCrc, outputCrc, patchCrc, realPatchCrc);
         } finally {
-           IOUtils.closeQuietly(stream);
+            IOUtils.closeQuietly(stream);
         }
     }
 

app/src/main/java/org/emunix/unipatcher/patcher/DPS.java

@@ -17,7 +17,7 @@ You should have received a copy of the GNU General Public License
 along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-package org.emunix.unipatcher.patch;
+package org.emunix.unipatcher.patcher;
 
 import android.content.Context;
 
@@ -30,7 +30,7 @@ import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.RandomAccessFile;
 
-public class DPS extends Patch {
+public class DPS extends Patcher {
 
     private static final int MIN_SIZE_PATCH = 136;
     private static final int BUFFER_SIZE = 32768;
@@ -42,13 +42,13 @@ public class DPS extends Patch {
     }
 
     @Override
-    public void apply() throws PatchException, IOException {
+    public void apply(boolean ignoreChecksum) throws PatchException, IOException {
 
-		if (patchFile.length() < MIN_SIZE_PATCH) {
-		    throw new PatchException(context.getString(R.string.notify_error_patch_corrupted));
-		}
+        if (patchFile.length() < MIN_SIZE_PATCH) {
+            throw new PatchException(context.getString(R.string.notify_error_patch_corrupted));
+        }
 
-		BufferedInputStream patchStream = null;
+        BufferedInputStream patchStream = null;
         RandomAccessFile romStream = null;
         RandomAccessFile outputStream = null;
 
@@ -63,9 +63,11 @@ public class DPS extends Patch {
                 throw new PatchException(context.getString(R.string.notify_error_not_dps_patch));
 
             // verify rom
-            long romSize = getUInt(buffer, 194);
-            if (romSize != romFile.length())
-                throw new IOException(context.getString(R.string.notify_error_rom_not_compatible_with_patch));
+            if (!ignoreChecksum) {
+                long romSize = getUInt(buffer, 194);
+                if (romSize != romFile.length())
+                    throw new IOException(context.getString(R.string.notify_error_rom_not_compatible_with_patch));
+            }
 
             romStream = new RandomAccessFile(romFile, "r");
             outputStream = new RandomAccessFile(outputFile, "rw");
@@ -121,7 +123,7 @@ public class DPS extends Patch {
     }
 
     private long getUInt(byte[] a, int offset) {
-    	return 	((long)(a[offset] & 0xff)) + ((long)(a[offset + 1] & 0xff) << 8) +
-    			((long)(a[offset + 2] & 0xff) << 16) + ((long)(a[offset + 3] & 0xff) << 24);
+        return ((long) (a[offset] & 0xff)) + ((long) (a[offset + 1] & 0xff) << 8) +
+                ((long) (a[offset + 2] & 0xff) << 16) + ((long) (a[offset + 3] & 0xff) << 24);
     }
 }

app/src/main/java/org/emunix/unipatcher/patcher/EBP.java

@@ -19,7 +19,7 @@ You should have received a copy of the GNU General Public License
 along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-package org.emunix.unipatcher.patch;
+package org.emunix.unipatcher.patcher;
 
 import android.content.Context;
 import android.support.annotation.NonNull;
@@ -45,7 +45,7 @@ import java.security.NoSuchAlgorithmException;
 import java.util.Arrays;
 import java.util.HashMap;
 
-public class EBP extends Patch {
+public class EBP extends Patcher {
 
     private static final byte[] MAGIC_NUMBER = {0x50, 0x41, 0x54, 0x43, 0x48}; // "PATCH"
     private static final byte[] EARTH_BOUND = {0x45, 0x41, 0x52, 0x54, 0x48, 0x20, 0x42, 0x4f, 0x55, 0x4e, 0x44};
@@ -68,12 +68,12 @@ public class EBP extends Patch {
     }
 
     @Override
-    public void apply() throws PatchException, IOException {
+    public void apply(boolean ignoreChecksum) throws PatchException, IOException {
         File cleanRom = File.createTempFile("rom", null, context.getCacheDir());
         File ipsPatch = File.createTempFile("patch", null, context.getCacheDir());
         try {
             Utils.copyFile(context, romFile, cleanRom);
-            prepareCleanRom(cleanRom);
+            prepareCleanRom(cleanRom, ignoreChecksum);
 
             EBPtoIPS(patchFile, ipsPatch);
 
@@ -85,7 +85,7 @@ public class EBP extends Patch {
         }
     }
 
-    private void prepareCleanRom(File file) throws IOException, PatchException {
+    private void prepareCleanRom(File file, boolean ignoreChecksum) throws IOException, PatchException {
         // delete smc header
         SnesSmcHeader smc = new SnesSmcHeader();
         try {
@@ -95,8 +95,10 @@ public class EBP extends Patch {
         }
 
         // check rom size and remove unused expanded space
-        if (file.length() < EB_CLEAN_ROM_SIZE)
-            throw new PatchException(context.getString(R.string.notify_error_rom_not_compatible_with_patch));
+        if (!ignoreChecksum) {
+            if (file.length() < EB_CLEAN_ROM_SIZE)
+                throw new PatchException(context.getString(R.string.notify_error_rom_not_compatible_with_patch));
+        }
         if (file.length() > EB_CLEAN_ROM_SIZE && checkExpanded(file))
             removeExpanded(file);
 
@@ -106,7 +108,7 @@ public class EBP extends Patch {
 
         // if we couldn't fix the ROM, try to remove a 0xff byte at the end.
         if (!checkMD5(file)) {
-            int length = (int)file.length();
+            int length = (int) file.length();
             byte[] buffer = new byte[length];
             FileInputStream in = new FileInputStream(file);
             int count = in.read(buffer);
@@ -254,7 +256,7 @@ public class EBP extends Patch {
                 if (size < 2)
                     throw new PatchException(context.getString(R.string.notify_error_patch_corrupted));
                 ips.write(buffer, 0, 2);
-                size = (((int)buffer[0] & 0xff) << 8) + ((int)buffer[1] & 0xff);
+                size = (((int) buffer[0] & 0xff) << 8) + ((int) buffer[1] & 0xff);
                 if (size != 0) {
                     int c = ebp.read(buffer, 0, size);
                     if (c < size)

app/src/main/java/org/emunix/unipatcher/patcher/IPS.java

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2013, 2016 Boris Timofeev
+Copyright (C) 2013, 2016, 2017 Boris Timofeev
 
 This file is part of UniPatcher.
 
@@ -17,7 +17,7 @@ You should have received a copy of the GNU General Public License
 along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-package org.emunix.unipatcher.patch;
+package org.emunix.unipatcher.patcher;
 
 import android.content.Context;
 
@@ -34,17 +34,27 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.util.Arrays;
 
-public class IPS extends Patch {
+public class IPS extends Patcher {
 
-    private static final byte[] MAGIC_NUMBER = {0x50, 0x41, 0x54, 0x43, 0x48}; // "PATCH"
+    public static final int NOT_IPS_PATCH = 0;
+    public static final int IPS_PATCH = 1;
+    public static final int IPS32_PATCH = 2;
+
+    private static final byte[] MAGIC_NUMBER_IPS = {0x50, 0x41, 0x54, 0x43, 0x48};   // "PATCH"
+    private static final byte[] MAGIC_NUMBER_IPS32 = {0x49, 0x50, 0x53, 0x33, 0x32}; // "IPS32"
+
+    private int mPatchType = NOT_IPS_PATCH;
 
     public IPS(Context context, File patch, File rom, File output) {
         super(context, patch, rom, output);
     }
 
     @Override
-    public void apply() throws PatchException, IOException {
+    public void apply(boolean ignoreChecksum) throws PatchException, IOException {
+        apply();
+    }
 
+    public void apply() throws PatchException, IOException {
         BufferedInputStream romStream = null;
         BufferedInputStream patchStream = null;
         BufferedOutputStream outputStream = null;
@@ -55,33 +65,37 @@ public class IPS extends Patch {
             outputStream = new BufferedOutputStream(new FileOutputStream(outputFile));
 
             long romSize = romFile.length();
-            int romPos = 0;
-            int outPos = 0;
-            int offset;
-            int size;
+            long romPos = 0;
+            long outPos = 0;
+            long offset;
+            long size;
 
             if (patchFile.length() < 14) {
                 throw new PatchException(context.getString(R.string.notify_error_patch_corrupted));
             }
 
-            // check magic string
             byte[] magic = new byte[5];
             size = patchStream.read(magic);
-            if (size != 5 || !Arrays.equals(magic, MAGIC_NUMBER))
+            if (Arrays.equals(magic, MAGIC_NUMBER_IPS)) {
+                mPatchType = IPS_PATCH;
+            } else if (Arrays.equals(magic, MAGIC_NUMBER_IPS32)) {
+                mPatchType = IPS32_PATCH;
+            } else {
                 throw new PatchException(context.getString(R.string.notify_error_not_ips_patch));
+            }
 
             while (true) {
-                offset = readOffset(patchStream, 3);
+                offset = readOffset(patchStream);
                 if (offset < 0)
                     throw new PatchException(context.getString(R.string.notify_error_patch_corrupted));
-                if (offset == 0x454f46) { // EOF
+                if (checkEOF(offset)) {
                     // truncate file or copy tail
                     if (romPos < romSize) {
-                        offset = readOffset(patchStream, 3);
+                        offset = readOffset(patchStream);
                         if (offset != -1 && offset >= romPos) {
                             size = offset - romPos;
                         } else {
-                            size = (int) romSize - romPos;
+                            size = romSize - romPos;
                         }
                         Utils.copy(romStream, outputStream, size);
                     }
@@ -97,7 +111,7 @@ public class IPS extends Patch {
                     }
                 } else {
                     if (outPos < romSize) {
-                        size = (int) romSize - outPos;
+                        size = romSize - outPos;
                         Utils.copy(romStream, outputStream, size);
                         romPos += size;
                         outPos += size;
@@ -111,14 +125,14 @@ public class IPS extends Patch {
 
                 size = (patchStream.read() << 8) + patchStream.read();
                 if (size != 0) {
-                    byte[] data = new byte[size];
+                    byte[] data = new byte[(int)size];
                     patchStream.read(data);
                     outputStream.write(data);
                     outPos += size;
                 } else { // RLE
                     size = (patchStream.read() << 8) + patchStream.read();
                     byte val = (byte) patchStream.read();
-                    byte[] data = new byte[size];
+                    byte[] data = new byte[(int)size];
                     Arrays.fill(data, val);
                     outputStream.write(data);
                     outPos += size;
@@ -126,10 +140,9 @@ public class IPS extends Patch {
 
                 if (offset <= romSize) {
                     if (romPos + size > romSize) {
-                        romPos = (int) romSize;
+                        romPos = romSize;
                     } else {
-                        // Не используй romStream.skip(size), оно по какой-то причине не всегда пропускает байты.
-                        byte[] buf = new byte[size];
+                        byte[] buf = new byte[(int)size];
                         romStream.read(buf);
                         romPos += size;
                     }
@@ -142,8 +155,30 @@ public class IPS extends Patch {
         }
     }
 
-    private int readOffset(InputStream stream, int numBytes) throws IOException {
-        int offset = 0;
+    private boolean checkEOF(long value) {
+        switch (mPatchType) {
+            case IPS_PATCH:
+                return value == 0x454f46; // "EOF"
+            case IPS32_PATCH:
+                return value == 0x45454f46; // "EEOF"
+        }
+        return false;
+    }
+
+    private long readOffset(InputStream stream) throws IOException {
+        long offset = 0;
+        int numBytes;
+        switch (mPatchType) {
+            case IPS_PATCH:
+                numBytes = 3;
+                break;
+            case IPS32_PATCH:
+                numBytes = 4;
+                break;
+            default:
+                throw new IOException("Internal IPS error");
+        }
+
         while (numBytes-- != 0) {
             int b = stream.read();
             if (b == -1)

app/src/main/java/org/emunix/unipatcher/patcher/PPF.java

@@ -17,7 +17,7 @@ You should have received a copy of the GNU General Public License
 along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-package org.emunix.unipatcher.patch;
+package org.emunix.unipatcher.patcher;
 
 import android.content.Context;
 
@@ -30,9 +30,8 @@ import java.io.IOException;
 import java.io.RandomAccessFile;
 import java.util.Arrays;
 
-public class PPF extends Patch {
+public class PPF extends Patcher {
 
-//    private static final String LOG_TAG = "PPF";
     private static final byte[] MAGIC_NUMBER = {0x50, 0x50, 0x46}; // "PPF" without version
 
     private RandomAccessFile patchStream;
@@ -69,16 +68,23 @@ public class PPF extends Patch {
     }
 
     @Override
-    public void apply() throws PatchException, IOException {
+    public void apply(boolean ignoreChecksum) throws PatchException, IOException {
         if (patchFile.length() < 61) {
             throw new PatchException(context.getString(R.string.notify_error_patch_corrupted));
         }
 
         switch (getPPFVersion(patchFile)) {
-            case 1: applyPPF1(); break;
-            case 2: applyPPF2(); break;
-            case 3: applyPPF3(); break;
-            default: throw new PatchException(context.getString(R.string.notify_error_not_ppf_patch));
+            case 1:
+                applyPPF1();
+                break;
+            case 2:
+                applyPPF2(ignoreChecksum);
+                break;
+            case 3:
+                applyPPF3(ignoreChecksum);
+                break;
+            default:
+                throw new PatchException(context.getString(R.string.notify_error_not_ppf_patch));
         }
     }
 
@@ -106,15 +112,17 @@ public class PPF extends Patch {
         }
     }
 
-    private void applyPPF2() throws IOException, PatchException {
+    private void applyPPF2(boolean ignoreChecksum) throws IOException, PatchException {
         try {
             patchStream = new RandomAccessFile(patchFile, "r");
 
             // Check size of ROM
             patchStream.seek(56);
             long romSize = readLittleEndianInt(patchStream);
-            if (romSize != romFile.length()) {
-                throw new PatchException(context.getString(R.string.notify_error_rom_not_compatible_with_patch));
+            if (!ignoreChecksum) {
+                if (romSize != romFile.length()) {
+                    throw new PatchException(context.getString(R.string.notify_error_rom_not_compatible_with_patch));
+                }
             }
 
             outputStream = new RandomAccessFile(outputFile, "rw");
@@ -125,8 +133,10 @@ public class PPF extends Patch {
             outputStream.seek(0x9320);
             patchStream.read(patchBinaryBlock, 0, 1024);
             outputStream.read(romBinaryBlock, 0, 1024);
-            if (!Arrays.equals(patchBinaryBlock, romBinaryBlock))
-                throw new PatchException(context.getString(R.string.notify_error_rom_not_compatible_with_patch));
+            if (!ignoreChecksum) {
+                if (!Arrays.equals(patchBinaryBlock, romBinaryBlock))
+                    throw new PatchException(context.getString(R.string.notify_error_rom_not_compatible_with_patch));
+            }
 
             // Calculate end of patch data
             long dataEnd = patchFile.length();
@@ -154,7 +164,7 @@ public class PPF extends Patch {
         }
     }
 
-    private void applyPPF3() throws IOException, PatchException {
+    private void applyPPF3(boolean ignoreChecksum) throws IOException, PatchException {
         try {
             patchStream = new RandomAccessFile(patchFile, "r");
             outputStream = new RandomAccessFile(outputFile, "rw");
@@ -176,8 +186,10 @@ public class PPF extends Patch {
                 }
                 patchStream.read(patchBinaryBlock, 0, 1024);
                 outputStream.read(romBinaryBlock, 0, 1024);
-                if (!Arrays.equals(patchBinaryBlock, romBinaryBlock))
-                    throw new PatchException(context.getString(R.string.notify_error_rom_not_compatible_with_patch));
+                if (!ignoreChecksum) {
+                    if (!Arrays.equals(patchBinaryBlock, romBinaryBlock))
+                        throw new PatchException(context.getString(R.string.notify_error_rom_not_compatible_with_patch));
+                }
             }
 
             // Calculate end of patch data
@@ -217,24 +229,23 @@ public class PPF extends Patch {
     private long readLittleEndianLong(RandomAccessFile stream) throws IOException {
         byte[] b = new byte[8];
         stream.read(b);
-        long result = ((long)(b[7] & 0xff) << 56) + ((long)(b[6] & 0xff) << 48 ) +
-                ((long)(b[5] & 0xff) << 40) + ((long)(b[4] & 0xff) << 32 ) +
-                ((long)(b[3] & 0xff) << 24) + ((long)(b[2] & 0xff) << 16 ) +
-                ((long)(b[1] & 0xff) << 8) + ((long)b[0] & 0xff);
-        return result;
+        return ((long) (b[7] & 0xff) << 56) + ((long) (b[6] & 0xff) << 48) +
+                ((long) (b[5] & 0xff) << 40) + ((long) (b[4] & 0xff) << 32) +
+                ((long) (b[3] & 0xff) << 24) + ((long) (b[2] & 0xff) << 16) +
+                ((long) (b[1] & 0xff) << 8) + ((long) b[0] & 0xff);
     }
 
     private int readLittleEndianInt(RandomAccessFile stream) throws IOException {
         byte[] b = new byte[4];
         stream.read(b);
-        return ((b[3] & 0xff) << 24) + ((b[2] & 0xff) <<16 ) +
-                ((b[1] & 0xff) << 8) + (b[0]&0xff);
+        return ((b[3] & 0xff) << 24) + ((b[2] & 0xff) << 16) +
+                ((b[1] & 0xff) << 8) + (b[0] & 0xff);
     }
 
     /**
      * Returns size of FileID
      *
-     * @param stream stream of PPF file
+     * @param stream     stream of PPF file
      * @param ppfVersion version of PPF patch
      * @return size of FileID or 0
      */

app/src/main/java/org/emunix/unipatcher/patcher/PatchException.java

@@ -17,7 +17,7 @@ You should have received a copy of the GNU General Public License
 along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-package org.emunix.unipatcher.patch;
+package org.emunix.unipatcher.patcher;
 
 public class PatchException extends Exception {
 

app/src/main/java/org/emunix/unipatcher/patcher/Patcher.java

@@ -17,25 +17,25 @@ You should have received a copy of the GNU General Public License
 along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-package org.emunix.unipatcher.patch;
+package org.emunix.unipatcher.patcher;
 
 import android.content.Context;
 
 import java.io.File;
 import java.io.IOException;
 
-public abstract class Patch {
+public abstract class Patcher {
     protected File patchFile = null;
     protected File romFile = null;
     protected File outputFile = null;
     protected Context context = null;
 
-    public Patch(Context c, File patch, File rom, File output) {
+    public Patcher(Context c, File patch, File rom, File output) {
         context = c;
         patchFile = patch;
         romFile = rom;
         outputFile = output;
     }
 
-    public abstract void apply() throws PatchException, IOException;
+    public abstract void apply(boolean ignoreChecksum) throws PatchException, IOException;
 }

app/src/main/java/org/emunix/unipatcher/patcher/UPS.java

@@ -17,7 +17,7 @@ You should have received a copy of the GNU General Public License
 along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-package org.emunix.unipatcher.patch;
+package org.emunix.unipatcher.patcher;
 
 import android.content.Context;
 
@@ -35,15 +35,16 @@ import java.io.IOException;
 import java.util.Arrays;
 import java.util.zip.CRC32;
 
-public class UPS extends Patch {
+public class UPS extends Patcher {
 
     private static final byte[] MAGIC_NUMBER = {0x55, 0x50, 0x53, 0x31}; // "UPS1"
+
     public UPS(Context context, File patch, File rom, File output) {
         super(context, patch, rom, output);
     }
 
     @Override
-    public void apply() throws PatchException, IOException {
+    public void apply(boolean ignoreChecksum) throws PatchException, IOException {
 
         if (patchFile.length() < 18) {
             throw new PatchException(context.getString(R.string.notify_error_patch_corrupted));
@@ -89,7 +90,9 @@ public class UPS extends Patch {
                 ySize = tmp;
                 upsCrc.swapInOut();
             } else {
-                throw new IOException(context.getString(R.string.notify_error_rom_not_compatible_with_patch));
+                if (!ignoreChecksum) {
+                    throw new IOException(context.getString(R.string.notify_error_rom_not_compatible_with_patch));
+                }
             }
 
             romStream = new BufferedInputStream(new FileInputStream(romFile));
@@ -124,9 +127,11 @@ public class UPS extends Patch {
             IOUtils.closeQuietly(outputStream);
         }
 
-        long realOutCrc = FileUtils.checksumCRC32(outputFile);
-        if (realOutCrc != upsCrc.getOutputFileCRC())
-            throw new PatchException(context.getString(R.string.notify_error_wrong_checksum_after_patching));
+        if (!ignoreChecksum) {
+            long realOutCrc = FileUtils.checksumCRC32(outputFile);
+            if (realOutCrc != upsCrc.getOutputFileCRC())
+                throw new PatchException(context.getString(R.string.notify_error_wrong_checksum_after_patching));
+        }
     }
 
     // decode pointer
@@ -197,7 +202,7 @@ public class UPS extends Patch {
                 throw new PatchException(context.getString(R.string.notify_error_patch_corrupted));
             return new UpsCrc(inputCrc, outputCrc, patchCrc, realPatchCrc);
         } finally {
-           IOUtils.closeQuietly(stream);
+            IOUtils.closeQuietly(stream);
         }
     }
 
@@ -243,7 +248,7 @@ public class UPS extends Patch {
             return realPatchCRC;
         }
 
-        public void swapInOut(){
+        public void swapInOut() {
             long tmp;
             tmp = inputFileCRC;
             inputFileCRC = outputFileCRC;

app/src/main/java/org/emunix/unipatcher/patcher/XDelta.java

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2016 Boris Timofeev
+Copyright (C) 2016-2017 Boris Timofeev
 
 This file is part of UniPatcher.
 
@@ -17,7 +17,7 @@ You should have received a copy of the GNU General Public License
 along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-package org.emunix.unipatcher.patch;
+package org.emunix.unipatcher.patcher;
 
 import android.content.Context;
 
@@ -29,23 +29,26 @@ import java.io.FileInputStream;
 import java.io.IOException;
 import java.util.Arrays;
 
-public class XDelta extends Patch {
+public class XDelta extends Patcher {
 
     private static final int NO_ERROR = 0;
     private static final int ERR_UNABLE_OPEN_PATCH = -5001;
     private static final int ERR_UNABLE_OPEN_ROM = -5002;
     private static final int ERR_UNABLE_OPEN_OUTPUT = -5003;
+    private static final int ERR_UNABLE_OPEN_SOURCE = -5004;
+    private static final int ERR_UNABLE_OPEN_MODIFIED = -5005;
     private static final int ERR_WRONG_CHECKSUM = -5010;
     private static final int ERR_INVALID_INPUT = -17712;
 
-    public static native int xdelta3apply(String patchPath, String romPath, String outputPath);
+    public static native int xdelta3apply(String patchPath, String romPath, String outputPath, boolean ignoreChecksum);
+    public static native int xdelta3create(String patchPath, String sourcePath, String modifiedPath);
 
     public XDelta(Context context, File patch, File rom, File output) {
         super(context, patch, rom, output);
     }
 
     @Override
-    public void apply() throws PatchException, IOException {
+    public void apply(boolean ignoreChecksum) throws PatchException, IOException {
         if (checkXDelta1(patchFile))
             throw new PatchException(context.getString(R.string.notify_error_xdelta1_unsupported));
 
@@ -55,7 +58,7 @@ public class XDelta extends Patch {
             throw new PatchException(context.getString(R.string.notify_error_failed_load_lib_xdelta3));
         }
 
-        int ret = xdelta3apply(patchFile.getPath(), romFile.getPath(), outputFile.getPath());
+        int ret = xdelta3apply(patchFile.getPath(), romFile.getPath(), outputFile.getPath(), ignoreChecksum);
 
         switch (ret) {
             case NO_ERROR:
@@ -78,6 +81,32 @@ public class XDelta extends Patch {
         }
     }
 
+    public void create() throws PatchException, IOException {
+        try {
+            System.loadLibrary("xdelta3");
+        } catch (UnsatisfiedLinkError e) {
+            throw new PatchException(context.getString(R.string.notify_error_failed_load_lib_xdelta3));
+        }
+
+        int ret = xdelta3create(patchFile.getPath(), romFile.getPath(), outputFile.getPath());
+
+        switch (ret) {
+            case NO_ERROR:
+                return;
+            case ERR_UNABLE_OPEN_PATCH:
+                throw new PatchException(context.getString(R.string.notify_error_unable_open_file)
+                        .concat(" ").concat(patchFile.getName()));
+            case ERR_UNABLE_OPEN_SOURCE:
+                throw new PatchException(context.getString(R.string.notify_error_unable_open_file)
+                        .concat(" ").concat(romFile.getName()));
+            case ERR_UNABLE_OPEN_MODIFIED:
+                throw new PatchException(context.getString(R.string.notify_error_unable_open_file)
+                        .concat(" ").concat(outputFile.getName()));
+            default:
+                throw new PatchException(context.getString(R.string.notify_error_unknown));
+        }
+    }
+
     public boolean checkXDelta1(File file) throws IOException {
         String[] MAGIC_XDELTA1 = {"%XDELTA%", "%XDZ000%", "%XDZ001%",
                 "%XDZ002%", "%XDZ003%", "%XDZ004%"};

app/src/main/java/org/emunix/unipatcher/tools/SmdFixChecksum.java

@@ -51,7 +51,7 @@ public class SmdFixChecksum {
         try {
             smdStream = new BufferedInputStream(new FileInputStream(smdFile));
 
-            long c =  IOUtils.skip(smdStream, 512);
+            long c = IOUtils.skip(smdStream, 512);
             if (c != 512)
                 throw new IOException("Skip failed");
 
@@ -83,7 +83,7 @@ public class SmdFixChecksum {
             smdStream.writeByte((sum >> 8) & 0xff);
             smdStream.writeByte(sum & 0xff);
         } finally {
-           IOUtils.closeQuietly(smdStream);
+            IOUtils.closeQuietly(smdStream);
         }
     }
 }

app/src/main/java/org/emunix/unipatcher/tools/SnesSmcHeader.java

@@ -60,7 +60,7 @@ public class SnesSmcHeader {
             int length;
             length = inputRom.read(header);
             if (saveHeader) {
-                File headerfile = new File(romfile.getPath()+".smc_header");
+                File headerfile = new File(romfile.getPath() + ".smc_header");
                 outputHeader = new FileOutputStream(headerfile);
                 outputHeader.write(header, 0, length);
             }

app/src/main/java/org/emunix/unipatcher/ui/activity/FilePickerActivity.java

@@ -29,12 +29,12 @@ import android.os.Environment;
 import android.support.annotation.NonNull;
 import android.support.v4.app.ActivityCompat;
 import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.CardView;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.support.v7.widget.Toolbar;
 import android.view.MenuItem;
 import android.view.View;
-import android.widget.FrameLayout;
 import android.widget.TextView;
 import android.widget.Toast;
 
@@ -42,10 +42,8 @@ import com.afollestad.materialdialogs.MaterialDialog;
 
 import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.FilenameUtils;
-import org.emunix.unipatcher.Globals;
 import org.emunix.unipatcher.R;
 import org.emunix.unipatcher.Utils;
-import org.emunix.unipatcher.ad.AdMobController;
 import org.emunix.unipatcher.ui.adapter.FilePickerAdapter;
 
 import java.io.File;
@@ -63,10 +61,10 @@ import java.util.zip.CRC32;
 
 public class FilePickerActivity extends AppCompatActivity implements FilePickerAdapter.OnItemClickListener {
 
-    private AdMobController ad;
     private RecyclerView list;
     private FilePickerAdapter listAdapter;
     private TextView permissionErrorText;
+    private CardView card;
 
     private TextView crc32;
     private TextView md5;
@@ -108,6 +106,7 @@ public class FilePickerActivity extends AppCompatActivity implements FilePickerA
         permissionErrorText = (TextView) findViewById(R.id.empty_view);
 
         list = (RecyclerView) findViewById(R.id.list);
+        card = (CardView) findViewById(R.id.card);
         try {
             list.setHasFixedSize(true);
         } catch (NullPointerException e) {/* TODO log */}
@@ -118,14 +117,6 @@ public class FilePickerActivity extends AppCompatActivity implements FilePickerA
         listAdapter.setOnItemClickListener(this);
 
         requestStoragePermission();
-
-        // Load ads
-        if (!Globals.isFullVersion()) {
-            FrameLayout adView = (FrameLayout) findViewById(R.id.adView);
-            ad = new AdMobController(this, adView);
-            if (!Utils.isOnline(this))
-                ad.show(false);
-        }
     }
 
     @Override
@@ -213,7 +204,7 @@ public class FilePickerActivity extends AppCompatActivity implements FilePickerA
 
         if (currentDir.getParent() != null && currentDir.getParentFile().canRead()) {
             entry = new FileEntry();
-            entry.setIcon(R.drawable.ic_folder_upload_grey600_24dp);
+            entry.setIcon(R.drawable.folder_upload);
             entry.setName("..");
             fileList.add(entry);
         }
@@ -223,15 +214,15 @@ public class FilePickerActivity extends AppCompatActivity implements FilePickerA
                 continue;
             if (file.isDirectory()) {
                 entry = new FileEntry();
-                entry.setIcon(R.drawable.ic_folder_grey600_24dp);
+                entry.setIcon(R.drawable.folder);
                 entry.setName(file.getName());
                 fileList.add(entry);
             } else {
                 entry = new FileEntry();
-                if (Utils.isPatch(file)){
-                    entry.setIcon(R.drawable.ic_healing_grey600_24dp);
+                if (Utils.isPatch(file)) {
+                    entry.setIcon(R.drawable.healing);
                 } else {
-                    entry.setIcon(R.drawable.ic_insert_drive_file_grey600_24dp);
+                    entry.setIcon(R.drawable.file);
                 }
                 entry.setName(file.getName());
                 fileList.add(entry);
@@ -259,30 +250,6 @@ public class FilePickerActivity extends AppCompatActivity implements FilePickerA
             savedInstanceState.putString("currentDirectory", currentDir.getAbsolutePath());
     }
 
-    @Override
-    public void onPause() {
-        if (ad != null) {
-            ad.pause();
-        }
-        super.onPause();
-    }
-
-    @Override
-    public void onResume() {
-        super.onResume();
-        if (ad != null) {
-            ad.resume();
-        }
-    }
-
-    @Override
-    public void onDestroy() {
-        if (ad != null) {
-            ad.destroy();
-        }
-        super.onDestroy();
-    }
-
     private void requestStoragePermission() {
         if (!Utils.hasStoragePermission(this)) {
             ActivityCompat.requestPermissions(this,
@@ -310,15 +277,11 @@ public class FilePickerActivity extends AppCompatActivity implements FilePickerA
 
     private void showPermissionError(boolean on) {
         if (on) {
-            list.setVisibility(View.GONE);
-            if (ad != null)
-                ad.show(false);
+            card.setVisibility(View.GONE);
             permissionErrorText.setVisibility(View.VISIBLE);
         } else {
             permissionErrorText.setVisibility(View.GONE);
-            if (ad != null)
-                ad.show(true);
-            list.setVisibility(View.VISIBLE);
+            card.setVisibility(View.VISIBLE);
         }
     }
 
@@ -399,8 +362,7 @@ public class FilePickerActivity extends AppCompatActivity implements FilePickerA
             }
         }
 
-        private HashMap<String, String> getFileChecksums(File file) throws IOException, NoSuchAlgorithmException, IllegalArgumentException
-        {
+        private HashMap<String, String> getFileChecksums(File file) throws IOException, NoSuchAlgorithmException, IllegalArgumentException {
             if (file.isDirectory())
                 throw new IllegalArgumentException("Unable calculate checksum for directory");
 

app/src/main/java/org/emunix/unipatcher/ui/activity/MainActivity.java

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2013-2016 Boris Timofeev
+Copyright (C) 2013-2017 Boris Timofeev
 
 This file is part of UniPatcher.
 
@@ -19,13 +19,13 @@ along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
 
 package org.emunix.unipatcher.ui.activity;
 
-import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.net.Uri;
 import android.os.Bundle;
-import android.os.Handler;
 import android.support.design.widget.FloatingActionButton;
 import android.support.design.widget.NavigationView;
+import android.support.design.widget.Snackbar;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.app.FragmentTransaction;
@@ -36,54 +36,34 @@ import android.support.v7.app.AppCompatActivity;
 import android.support.v7.app.AppCompatDelegate;
 import android.support.v7.preference.PreferenceManager;
 import android.support.v7.widget.Toolbar;
-import android.util.Log;
 import android.view.MenuItem;
 import android.view.View;
-import android.widget.FrameLayout;
-import android.widget.Toast;
-
-import com.anjlab.android.iab.v3.BillingProcessor;
-import com.anjlab.android.iab.v3.TransactionDetails;
-import com.google.firebase.analytics.FirebaseAnalytics;
 
 import org.emunix.unipatcher.BuildConfig;
-import org.emunix.unipatcher.Globals;
 import org.emunix.unipatcher.R;
-import org.emunix.unipatcher.Utils;
-import org.emunix.unipatcher.ad.AdMobController;
-import org.emunix.unipatcher.ui.dialog.RateThisApp;
+import org.emunix.unipatcher.Settings;
+import org.emunix.unipatcher.UniPatcher;
 import org.emunix.unipatcher.ui.fragment.ActionFragment;
+import org.emunix.unipatcher.ui.fragment.CreatePatchFragment;
 import org.emunix.unipatcher.ui.fragment.PatchingFragment;
 import org.emunix.unipatcher.ui.fragment.SmdFixChecksumFragment;
 import org.emunix.unipatcher.ui.fragment.SnesSmcHeaderFragment;
 
+import java.util.Random;
+
 import static android.support.v7.app.AppCompatDelegate.MODE_NIGHT_AUTO;
 import static android.support.v7.app.AppCompatDelegate.MODE_NIGHT_NO;
 import static android.support.v7.app.AppCompatDelegate.MODE_NIGHT_YES;
 
 public class MainActivity extends AppCompatActivity
-     implements NavigationView.OnNavigationItemSelectedListener {
-    private static final String LOG_TAG = "org.emunix.unipatcher";
-
-    private static final String SKU_FULL = "full";
-    private static final String SKU_REMOVE_ADS = "ad";
-    private boolean readyToPurchase = false;
-    private BillingProcessor bp;
-    private AdMobController ad;
-    private FirebaseAnalytics firebaseAnalytics;
-    private Context context;
+        implements NavigationView.OnNavigationItemSelectedListener {
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         setTheme();
         super.onCreate(savedInstanceState);
-        context = this;
         setContentView(R.layout.activity_main);
 
-        firebaseAnalytics = FirebaseAnalytics.getInstance(this);
-        if (BuildConfig.DEBUG)
-            firebaseAnalytics.setAnalyticsCollectionEnabled(false);
-
         Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
 
@@ -99,11 +79,9 @@ public class MainActivity extends AppCompatActivity
             public void onClick(View view) {
                 FragmentManager fragmentManager = getSupportFragmentManager();
                 ActionFragment fragment = (ActionFragment) fragmentManager.findFragmentById(R.id.content_frame);
-                if (fragment != null){
+                if (fragment != null) {
                     boolean ret = fragment.runAction();
                 }
-                //Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
-                //        .setAction("Action", null).show();
             }
         });
 
@@ -115,55 +93,12 @@ public class MainActivity extends AppCompatActivity
         }
 
         parseArgument();
-        bp = new BillingProcessor(this, Globals.getKey(), new BillingProcessor.IBillingHandler() {
-            @Override
-            public void onBillingInitialized() {
-                Log.d(LOG_TAG, "Billing initialized");
-                readyToPurchase = true;
-                if (bp.isPurchased(SKU_FULL) || bp.isPurchased(SKU_REMOVE_ADS)) {
-                    setFullVersion();
-                }
-            }
-            @Override
-            public void onProductPurchased(String productId, TransactionDetails details) {
-                Log.d(LOG_TAG, "Item purchased: " + productId);
-                complain(getString(R.string.purchase_successful));
-                setFullVersion();
-            }
-            @Override
-            public void onBillingError(int errorCode, Throwable error) {
-                if (errorCode != 110) // cancel purchase
-                    complain("Billing error: " + Integer.toString(errorCode));
-            }
-            @Override
-            public void onPurchaseHistoryRestored() {
-                for(String sku : bp.listOwnedProducts())
-                    Log.d(LOG_TAG, "Owned Managed Product: " + sku);
-                if (bp.isPurchased(SKU_FULL) || bp.isPurchased(SKU_REMOVE_ADS)) {
-                    setFullVersion();
-                }
-            }
-        });
-        RateThisApp.launch(this);
-
-        // Load ads
-        if (!Globals.isFullVersion()) {
-            Handler adHandler = new Handler();
-            adHandler.postDelayed(new Runnable() {
-                @Override
-                public void run() {
-                    FrameLayout adView = (FrameLayout) findViewById(R.id.adView);
-                    ad = new AdMobController(context, adView);
-                    if (!Utils.isOnline(context))
-                        ad.show(false);
-                }
-            }, 1000);
-        }
+        showDonateSnackbar();
     }
 
     private void setTheme() {
         SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
-        String theme = sp.getString("theme","light");
+        String theme = sp.getString("theme", "light");
         switch (theme) {
             case "light":
                 AppCompatDelegate.setDefaultNightMode(MODE_NIGHT_NO);
@@ -183,10 +118,12 @@ public class MainActivity extends AppCompatActivity
 
         if (id == R.id.nav_apply_patch) {
             selectDrawerItem(0);
-        } else if (id == R.id.nav_smd_fix_checksum) {
+        } else if (id == R.id.nav_create_patch) {
             selectDrawerItem(1);
-        } else if (id == R.id.nav_snes_add_del_smc_header) {
+        } else if (id == R.id.nav_smd_fix_checksum) {
             selectDrawerItem(2);
+        } else if (id == R.id.nav_snes_add_del_smc_header) {
+            selectDrawerItem(3);
         }
 
         DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
@@ -196,9 +133,9 @@ public class MainActivity extends AppCompatActivity
             Intent settingsIntent = new Intent(this, SettingsActivity.class);
             startActivity(settingsIntent);
         } else if (id == R.id.nav_rate) {
-            RateThisApp.rate(this);
-        } else if (id == R.id.nav_buy) {
-            buyFullVersion();
+            rateApp();
+        } else if (id == R.id.nav_donate) {
+            showDonateActivity();
         } else if (id == R.id.nav_share) {
             shareApp();
         } else if (id == R.id.nav_help) {
@@ -213,9 +150,17 @@ public class MainActivity extends AppCompatActivity
         // update the main content by replacing fragments
         Fragment fragment;
         switch (position) {
-            case 1: fragment = new SmdFixChecksumFragment(); break;
-            case 2: fragment = new SnesSmcHeaderFragment(); break;
-            default: fragment = new PatchingFragment();
+            case 1:
+                fragment = new CreatePatchFragment();
+                break;
+            case 2:
+                fragment = new SmdFixChecksumFragment();
+                break;
+            case 3:
+                fragment = new SnesSmcHeaderFragment();
+                break;
+            default:
+                fragment = new PatchingFragment();
         }
 
         FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
@@ -226,70 +171,66 @@ public class MainActivity extends AppCompatActivity
     private void parseArgument() {
         try {
             String arg = getIntent().getData().getPath();
-            Globals.setCmdArgument(arg);
-            Log.d(LOG_TAG, "Cmd argument: " + arg);
+            UniPatcher.setAppArgument(arg);
         } catch (NullPointerException e) {
-            Log.e(LOG_TAG, "NullPointerException in argument fetching");
+            // The application is not opened from the file manager
         }
     }
 
-    @Override
-    protected void onActivityResult(int requestCode, int resultCode, Intent data){
-        Log.d(LOG_TAG, "onActivityResult(" + requestCode + "," + resultCode + "," + data);
-        if (!bp.handleActivityResult(requestCode, resultCode, data))
-            super.onActivityResult(requestCode, resultCode, data);
+    private void showDonateSnackbar() {
+        // don't show snackbar if the user did not patch the file successfully
+        if (!Settings.getPatchingSuccessful(this))
+            return;
+
+        // don't show snackbar some time if the user swiped off it before
+        int count = Settings.getDontShowDonateSnackbarCount(this);
+        if (count != 0) {
+            Settings.setDontShowDonateSnackbarCount(this, --count);
+            return;
+        }
+
+        // don't show snackbar each time you open the application
+        if (new Random().nextInt(6) != 0)
+            return;
+
+        Snackbar.make(findViewById(R.id.content_frame), R.string.main_activity_donate_snackbar_text, Snackbar.LENGTH_INDEFINITE)
+                    .setAction(R.string.main_activity_donate_snackbar_button, new View.OnClickListener() {
+                        @Override
+                        public void onClick(View v) {
+                            showDonateActivity();
+                        }
+                    })
+                    .addCallback(new Snackbar.Callback() {
+                        @Override
+                        public void onDismissed(Snackbar snackbar, int event) {
+                            if (event == Snackbar.Callback.DISMISS_EVENT_SWIPE) {
+                                Settings.setDontShowDonateSnackbarCount(getApplicationContext(), 30);
+                            }
+                        }
+                    }
+                    ).show();
+    }
+
+    private void showDonateActivity() {
+        Intent donateIntent = new Intent(this, DonateActivity.class);
+        startActivity(donateIntent);
     }
 
     private void shareApp() {
         Intent shareIntent = new Intent(Intent.ACTION_SEND);
         shareIntent.setType("text/plain");
         shareIntent.putExtra(Intent.EXTRA_SUBJECT, getString(R.string.app_name));
-        shareIntent.putExtra(Intent.EXTRA_TEXT, getString(R.string.share_text) + "https://play.google.com/store/apps/details?id=org.eminix.unipatcher");
+        shareIntent.putExtra(Intent.EXTRA_TEXT, getString(R.string.share_text) + BuildConfig.SHARE_URL);
         startActivity(Intent.createChooser(shareIntent, getString(R.string.share_dialog_title)));
     }
 
-    private void buyFullVersion() {
-        if (readyToPurchase)
-            bp.purchase(this, SKU_REMOVE_ADS);
-        else
-            complain("Billing not initialized.");
-    }
-
-    private void setFullVersion() {
-        Globals.setFullVersion();
-        if (ad != null)
-            ad.show(false);
-    }
-
-    private void complain(String message) {
-        Log.d(LOG_TAG, message);
-        Toast.makeText(this, message, Toast.LENGTH_LONG).show();
-    }
-
-    @Override
-    public void onPause() {
-        if (ad != null) {
-            ad.pause();
+    public void rateApp() {
+        Intent rateAppIntent = new Intent(Intent.ACTION_VIEW);
+        rateAppIntent.setData(Uri.parse(BuildConfig.RATE_URL));
+        if (getPackageManager().queryIntentActivities(rateAppIntent, 0).size() == 0) {
+            // Market app is not installed. Open web browser
+            rateAppIntent.setData(Uri.parse(BuildConfig.SHARE_URL));
         }
-        super.onPause();
-    }
-
-    @Override
-    public void onResume() {
-        super.onResume();
-        if (ad != null) {
-            ad.resume();
-        }
-    }
-
-    @Override
-    public void onDestroy() {
-        if (bp != null) {
-            bp.release();
-        }
-        if (ad != null) {
-            ad.destroy();
-        }
-        super.onDestroy();
+        startActivity(rateAppIntent);
     }
 }

app/src/main/java/org/emunix/unipatcher/ui/adapter/FilePickerAdapter.java

@@ -38,6 +38,7 @@ public class FilePickerAdapter extends RecyclerView.Adapter<FilePickerAdapter.Vi
 
     public interface OnItemClickListener {
         void onItemClick(View v, int position);
+
         void onItemLongClick(View v, int position);
     }
 

app/src/main/java/org/emunix/unipatcher/ui/adapter/HelpPagerAdapter.java

@@ -39,14 +39,11 @@ public class HelpPagerAdapter extends FragmentStatePagerAdapter {
     public Fragment getItem(int position) {
         switch (position) {
             case 0:
-                FaqFragment tab1 = new FaqFragment();
-                return tab1;
+                return new FaqFragment();
             case 1:
-                ChangelogFragment tab2 = new ChangelogFragment();
-                return tab2;
+                return new ChangelogFragment();
             case 2:
-                AboutFragment tab3 = new AboutFragment();
-                return tab3;
+                return new AboutFragment();
             default:
                 return null;
         }

app/src/main/java/org/emunix/unipatcher/ui/dialog/RateThisApp.java

@@ -1,89 +0,0 @@
-/*
-Copyright (C) 2013 Boris Timofeev
-
-This file is part of UniPatcher.
-
-UniPatcher is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-UniPatcher is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-package org.emunix.unipatcher.ui.dialog;
-
-import android.content.Context;
-import android.content.DialogInterface;
-import android.content.Intent;
-import android.content.SharedPreferences;
-import android.net.Uri;
-import android.support.v7.app.AlertDialog;
-
-import org.emunix.unipatcher.R;
-
-public class RateThisApp {
-
-    private final static int LAUNCHES_UNTIL_PROMPT = 7;
-
-    public static void launch(Context context) {
-        SharedPreferences preferences = context.getSharedPreferences("RateThisApp", 0);
-        if (preferences.getBoolean("dont_show_again", false))
-            return;
-
-        SharedPreferences.Editor editor = preferences.edit();
-        long launchCount = preferences.getLong("launch_count", 0) + 1;
-        editor.putLong("launch_count", launchCount);
-
-        if (launchCount % LAUNCHES_UNTIL_PROMPT == 0)
-            showDialog(context);
-
-        editor.apply();
-    }
-
-    public static void rate(Context context) {
-        String packageName = context.getApplicationContext().getPackageName();
-        Intent rateAppIntent = new Intent(Intent.ACTION_VIEW);
-        rateAppIntent.setData(Uri.parse("market://details?id=" + packageName));
-        if (context.getPackageManager().queryIntentActivities(rateAppIntent, 0).size() == 0) {
-            // Market app is not installed. Open web browser
-            rateAppIntent.setData(Uri.parse("https://play.google.com/store/apps/details?id=" + packageName));
-        }
-        context.startActivity(rateAppIntent);
-        dontShowDialogAgain(context);
-    }
-
-    private static void showDialog(final Context context) {
-        AlertDialog.Builder builder = new AlertDialog.Builder(context);
-        builder.setTitle(R.string.rate_dialog_title);
-        builder.setMessage(R.string.rate_dialog_message);
-        builder.setPositiveButton(R.string.rate_dialog_ok, new DialogInterface.OnClickListener() {
-            @Override
-            public void onClick(DialogInterface dialogInterface, int i) {
-                rate(context);
-            }
-        });
-
-        builder.setNegativeButton(R.string.rate_dialog_later, new DialogInterface.OnClickListener() {
-            @Override
-            public void onClick(DialogInterface dialogInterface, int i) {
-                dialogInterface.cancel();
-            }
-        });
-        AlertDialog dialog = builder.create();
-        dialog.show();
-    }
-
-    private static void dontShowDialogAgain(Context context) {
-        SharedPreferences preferences = context.getSharedPreferences("RateThisApp", 0);
-        SharedPreferences.Editor editor = preferences.edit();
-        editor.putBoolean("dont_show_again", true);
-        editor.apply();
-    }
-}

app/src/main/java/org/emunix/unipatcher/ui/fragment/AboutFragment.java

@@ -21,6 +21,7 @@ package org.emunix.unipatcher.ui.fragment;
 
 import android.os.Bundle;
 import android.support.v4.app.Fragment;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -28,9 +29,12 @@ import android.widget.TextView;
 
 import org.emunix.unipatcher.R;
 import org.emunix.unipatcher.Utils;
+import org.markdown4j.Markdown4jProcessor;
 import org.sufficientlysecure.htmltextview.HtmlResImageGetter;
 import org.sufficientlysecure.htmltextview.HtmlTextView;
 
+import java.io.IOException;
+
 public class AboutFragment extends Fragment {
 
     @Override
@@ -41,7 +45,13 @@ public class AboutFragment extends Fragment {
         TextView versionText = (TextView) view.findViewById(R.id.versionText);
         versionText.setText(getString(R.string.help_activity_about_tab_version, Utils.getAppVersion(getActivity())));
         HtmlTextView aboutText = (HtmlTextView) view.findViewById(R.id.aboutText);
-        aboutText.setHtml(R.raw.about, new HtmlResImageGetter(aboutText));
+        try {
+            String html = new Markdown4jProcessor().process(
+                    getActivity().getResources().openRawResource(R.raw.about));
+            aboutText.setHtml(html, new HtmlResImageGetter(aboutText));
+        } catch (IOException e) {
+            Log.e("UniPatcher", "IOException", e);
+        }
 
         return view;
     }

app/src/main/java/org/emunix/unipatcher/ui/fragment/ChangelogFragment.java

@@ -21,14 +21,18 @@ package org.emunix.unipatcher.ui.fragment;
 
 import android.os.Bundle;
 import android.support.v4.app.Fragment;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
 import org.emunix.unipatcher.R;
+import org.markdown4j.Markdown4jProcessor;
 import org.sufficientlysecure.htmltextview.HtmlResImageGetter;
 import org.sufficientlysecure.htmltextview.HtmlTextView;
 
+import java.io.IOException;
+
 public class ChangelogFragment extends Fragment {
 
     public ChangelogFragment() {
@@ -41,7 +45,13 @@ public class ChangelogFragment extends Fragment {
         View view = inflater.inflate(R.layout.fragment_changelog, container, false);
 
         HtmlTextView changelogText = (HtmlTextView) view.findViewById(R.id.changelogText);
-        changelogText.setHtml(R.raw.changelog, new HtmlResImageGetter(changelogText));
+        try {
+            String html = new Markdown4jProcessor().process(
+                    getActivity().getResources().openRawResource(R.raw.changelog));
+            changelogText.setHtml(html, new HtmlResImageGetter(changelogText));
+        } catch (IOException e) {
+            Log.e("UniPatcher", "IOException", e);
+        }
 
         return view;
     }

app/src/main/java/org/emunix/unipatcher/ui/fragment/CreatePatchFragment.java

@@ -0,0 +1,259 @@
+/*
+ Copyright (c) 2017 Boris Timofeev
+
+ This file is part of UniPatcher.
+
+ UniPatcher is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ UniPatcher is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
+
+ */
+
+package org.emunix.unipatcher.ui.fragment;
+
+import android.app.Activity;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.graphics.Typeface;
+import android.os.Bundle;
+import android.support.v7.app.AlertDialog;
+import android.support.v7.widget.CardView;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.EditText;
+import android.widget.FrameLayout;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import org.apache.commons.io.FilenameUtils;
+import org.emunix.unipatcher.Action;
+import org.emunix.unipatcher.R;
+import org.emunix.unipatcher.Settings;
+import org.emunix.unipatcher.Utils;
+import org.emunix.unipatcher.WorkerService;
+import org.emunix.unipatcher.ui.activity.FilePickerActivity;
+
+import java.io.File;
+
+public class CreatePatchFragment extends ActionFragment implements View.OnClickListener {
+
+    private static final String LOG_TAG = "org.emunix.unipatcher";
+
+    private TextView sourceNameTextView;
+    private TextView modifiedNameTextView;
+    private TextView patchNameTextView;
+    private String sourcePath = null;
+    private String modifiedPath = null;
+    private String patchPath = null;
+
+    public CreatePatchFragment() {
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.create_patch_fragment, container, false);
+
+        sourceNameTextView = (TextView) view.findViewById(R.id.sourceFileNameTextView);
+        modifiedNameTextView = (TextView) view.findViewById(R.id.modifiedFileNameTextView);
+        patchNameTextView = (TextView) view.findViewById(R.id.patchFileNameTextView);
+
+        CardView sourceCardView = (CardView) view.findViewById(R.id.sourceFileCardView);
+        sourceCardView.setOnClickListener(this);
+        CardView modifiedCardView = (CardView) view.findViewById(R.id.modifiedFileCardView);
+        modifiedCardView.setOnClickListener(this);
+        CardView patchCardView = (CardView) view.findViewById(R.id.patchFileCardView);
+        patchCardView.setOnClickListener(this);
+
+        restoreState(savedInstanceState);
+
+        setFonts(view);
+
+        // Set action bar title
+        getActivity().setTitle(R.string.nav_create_patch);
+
+        return view;
+    }
+
+    private void setFonts(View view) {
+        TextView sourceLabel = (TextView) view.findViewById(R.id.sourceFileLabel);
+        TextView modifiedLabel = (TextView) view.findViewById(R.id.modifiedFileLabel);
+        TextView patchLabel = (TextView) view.findViewById(R.id.patchFileLabel);
+
+        Typeface roboto_light = Typeface.createFromAsset(getActivity().getAssets(), "fonts/Roboto-Light.ttf");
+
+        sourceLabel.setTypeface(roboto_light);
+        modifiedLabel.setTypeface(roboto_light);
+        patchLabel.setTypeface(roboto_light);
+        sourceNameTextView.setTypeface(roboto_light);
+        modifiedNameTextView.setTypeface(roboto_light);
+        patchNameTextView.setTypeface(roboto_light);
+    }
+
+    private void restoreState(Bundle savedInstanceState) {
+        if (savedInstanceState != null) {
+            sourcePath = savedInstanceState.getString("sourcePath");
+            modifiedPath = savedInstanceState.getString("modifiedPath");
+            patchPath = savedInstanceState.getString("patchPath");
+            if (sourcePath != null)
+                sourceNameTextView.setText(new File(sourcePath).getName());
+            if (modifiedPath != null)
+                modifiedNameTextView.setText(new File(modifiedPath).getName());
+            if (patchPath != null)
+                patchNameTextView.setText(new File(patchPath).getName());
+        }
+    }
+
+    @Override
+    public void onSaveInstanceState(Bundle savedInstanceState) {
+        super.onSaveInstanceState(savedInstanceState);
+        savedInstanceState.putString("sourcePath", sourcePath);
+        savedInstanceState.putString("modifiedPath", modifiedPath);
+        savedInstanceState.putString("patchPath", patchPath);
+    }
+
+    @Override
+    public void onClick(View view) {
+        Intent intent = new Intent(getActivity(), FilePickerActivity.class);
+        switch (view.getId()) {
+            case R.id.sourceFileCardView:
+                intent.putExtra("title", getString(R.string.file_picker_activity_title_select_source_file));
+                intent.putExtra("directory", Settings.getRomDir(getActivity()));
+                startActivityForResult(intent, Action.SELECT_SOURCE_FILE);
+                break;
+            case R.id.modifiedFileCardView:
+                intent.putExtra("title", getString(R.string.file_picker_activity_title_select_modified_file));
+                intent.putExtra("directory", Settings.getRomDir(getActivity()));
+                startActivityForResult(intent, Action.SELECT_MODIFIED_FILE);
+                break;
+            case R.id.patchFileCardView:
+                renamePatchFile();
+                break;
+        }
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        Log.d(LOG_TAG, "onActivityResult(" + requestCode + "," + resultCode + "," + data);
+        if (resultCode == Activity.RESULT_OK) {
+            String path = data.getStringExtra("path");
+            File fpath = new File(path);
+
+            switch (requestCode) {
+                case Action.SELECT_SOURCE_FILE:
+                    sourcePath = path;
+                    sourceNameTextView.setVisibility(View.VISIBLE);
+                    sourceNameTextView.setText(fpath.getName());
+                    Settings.setLastRomDir(getActivity(), fpath.getParent());
+                    break;
+                case Action.SELECT_MODIFIED_FILE:
+                    modifiedPath = path;
+                    modifiedNameTextView.setVisibility(View.VISIBLE);
+                    modifiedNameTextView.setText(fpath.getName());
+                    Settings.setLastRomDir(getActivity(), fpath.getParent());
+                    patchPath = makeOutputPath(path);
+                    patchNameTextView.setText(new File(patchPath).getName());
+                    break;
+            }
+        }
+        super.onActivityResult(requestCode, resultCode, data);
+    }
+
+    private String makeOutputPath(String fullname) {
+        String dir = Settings.getOutputDir(getActivity());
+        if (dir.equals("")) { // get ROM directory
+            dir = FilenameUtils.getFullPath(fullname);
+        }
+        String baseName = FilenameUtils.getBaseName(fullname);
+        return FilenameUtils.concat(dir, baseName.concat(".xdelta"));
+    }
+
+    public boolean runAction() {
+        if (sourcePath == null & modifiedPath == null) {
+            Toast.makeText(getActivity(), getString(R.string.create_patch_fragment_toast_source_and_modified_not_selected), Toast.LENGTH_LONG).show();
+            return false;
+        } else if (sourcePath == null) {
+            Toast.makeText(getActivity(), getString(R.string.create_patch_fragment_toast_source_not_selected), Toast.LENGTH_LONG).show();
+            return false;
+        } else if (modifiedPath == null) {
+            Toast.makeText(getActivity(), getString(R.string.create_patch_fragment_toast_modified_not_selected), Toast.LENGTH_LONG).show();
+            return false;
+        }
+
+        Intent intent = new Intent(getActivity(), WorkerService.class);
+        intent.putExtra("action", Action.CREATE_PATCH);
+        intent.putExtra("sourcePath", sourcePath);
+        intent.putExtra("modifiedPath", modifiedPath);
+        intent.putExtra("patchPath", patchPath);
+        Utils.startForegroundService(getActivity(), intent);
+
+        Toast.makeText(getActivity(), R.string.toast_create_patch_started_check_notify, Toast.LENGTH_SHORT).show();
+        return true;
+    }
+
+    private void renamePatchFile() {
+        if (modifiedPath == null) {
+            Toast.makeText(getActivity(), getString(R.string.create_patch_fragment_toast_modified_not_selected), Toast.LENGTH_LONG).show();
+            return;
+        }
+
+        AlertDialog.Builder dialog = new AlertDialog.Builder(getActivity());
+        dialog.setTitle(R.string.dialog_rename_title);
+        final EditText input = new EditText(getActivity());
+        input.setText(patchNameTextView.getText());
+
+        // add left and right margins to EditText.
+        FrameLayout container = new FrameLayout(getActivity());
+        FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
+        int dp_24 = Utils.dpToPx(getActivity(), 24);
+        params.setMargins(dp_24, 0, dp_24, 0);
+        input.setLayoutParams(params);
+        container.addView(input);
+        dialog.setView(container);
+
+        dialog.setPositiveButton(R.string.dialog_rename_ok, new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialog, int which) {
+                String newName = input.getText().toString();
+                if (newName.equals("")) {
+                    Toast.makeText(getActivity(), R.string.dialog_rename_error_empty_name, Toast.LENGTH_LONG).show();
+                    return;
+                }
+                if (newName.contains("/")) {
+                    newName = newName.replaceAll("/", "_");
+                    Toast.makeText(getActivity(), R.string.dialog_rename_error_invalid_chars, Toast.LENGTH_LONG).show();
+                }
+                String newPath = new File(patchPath).getParent().concat(File.separator).concat(newName);
+                if (FilenameUtils.equals(newPath, sourcePath) || FilenameUtils.equals(newPath, modifiedPath)) {
+                    Toast.makeText(getActivity(), R.string.dialog_rename_error_same_name, Toast.LENGTH_LONG).show();
+                    return;
+                }
+                patchNameTextView.setText(newName);
+                patchPath = newPath;
+            }
+        });
+        dialog.setNegativeButton(R.string.dialog_rename_cancel, new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialog, int which) {
+                dialog.cancel();
+            }
+        });
+
+        dialog.show();
+    }
+}

app/src/main/java/org/emunix/unipatcher/ui/fragment/FaqFragment.java

@@ -21,23 +21,32 @@ package org.emunix.unipatcher.ui.fragment;
 
 import android.os.Bundle;
 import android.support.v4.app.Fragment;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
 import org.emunix.unipatcher.R;
+import org.markdown4j.Markdown4jProcessor;
 import org.sufficientlysecure.htmltextview.HtmlResImageGetter;
 import org.sufficientlysecure.htmltextview.HtmlTextView;
 
+import java.io.IOException;
+
 public class FaqFragment extends Fragment {
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.fragment_faq, container, false);
-
         HtmlTextView faqText = (HtmlTextView) view.findViewById(R.id.faqText);
-        faqText.setHtml(R.raw.faq, new HtmlResImageGetter(faqText));
+        try {
+            String html = new Markdown4jProcessor().process(
+                    getActivity().getResources().openRawResource(R.raw.faq));
+            faqText.setHtml(html, new HtmlResImageGetter(faqText));
+        } catch (IOException e) {
+            Log.e("UniPatcher", "IOException", e);
+        }
 
         return view;
     }

app/src/main/java/org/emunix/unipatcher/ui/fragment/PatchingFragment.java

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2014, 2016 Boris Timofeev
+Copyright (C) 2014, 2016, 2017 Boris Timofeev
 
 This file is part of UniPatcher.
 
@@ -36,9 +36,10 @@ import android.widget.TextView;
 import android.widget.Toast;
 
 import org.apache.commons.io.FilenameUtils;
-import org.emunix.unipatcher.Globals;
+import org.emunix.unipatcher.Action;
 import org.emunix.unipatcher.R;
 import org.emunix.unipatcher.Settings;
+import org.emunix.unipatcher.UniPatcher;
 import org.emunix.unipatcher.Utils;
 import org.emunix.unipatcher.WorkerService;
 import org.emunix.unipatcher.ui.activity.FilePickerActivity;
@@ -49,8 +50,6 @@ public class PatchingFragment extends ActionFragment implements View.OnClickList
 
     private static final String LOG_TAG = "org.emunix.unipatcher";
 
-    private static final int SELECT_ROM_FILE = 1;
-    private static final int SELECT_PATCH_FILE = 2;
     private TextView romNameTextView;
     private TextView patchNameTextView;
     private TextView outputNameTextView;
@@ -58,7 +57,8 @@ public class PatchingFragment extends ActionFragment implements View.OnClickList
     private String patchPath = null;
     private String outputPath = null;
 
-    public PatchingFragment() {}
+    public PatchingFragment() {
+    }
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
@@ -96,7 +96,7 @@ public class PatchingFragment extends ActionFragment implements View.OnClickList
     }
 
     private void parseArgument() {
-        patchPath = Globals.getCmdArgument();
+        patchPath = UniPatcher.getAppArgument();
         if (patchPath != null) {
             patchNameTextView.setText(new File(patchPath).getName());
         }
@@ -118,14 +118,14 @@ public class PatchingFragment extends ActionFragment implements View.OnClickList
     }
 
     private void restoreState(Bundle savedInstanceState) {
-        if (savedInstanceState != null){
+        if (savedInstanceState != null) {
             romPath = savedInstanceState.getString("romPath");
             patchPath = savedInstanceState.getString("patchPath");
             outputPath = savedInstanceState.getString("outputPath");
             if (romPath != null)
                 romNameTextView.setText(new File(romPath).getName());
             if (patchPath != null)
-                patchNameTextView.setText(new File (patchPath).getName());
+                patchNameTextView.setText(new File(patchPath).getName());
             if (outputPath != null)
                 outputNameTextView.setText(new File(outputPath).getName());
         }
@@ -140,18 +140,18 @@ public class PatchingFragment extends ActionFragment implements View.OnClickList
     }
 
     @Override
-    public void onClick(View view){
+    public void onClick(View view) {
         Intent intent = new Intent(getActivity(), FilePickerActivity.class);
         switch (view.getId()) {
             case R.id.patchCardView:
                 intent.putExtra("title", getString(R.string.file_picker_activity_title_select_patch));
                 intent.putExtra("directory", Settings.getPatchDir(getActivity()));
-                startActivityForResult(intent, SELECT_PATCH_FILE);
+                startActivityForResult(intent, Action.SELECT_PATCH_FILE);
                 break;
             case R.id.romCardView:
                 intent.putExtra("title", getString(R.string.file_picker_activity_title_select_rom));
                 intent.putExtra("directory", Settings.getRomDir(getActivity()));
-                startActivityForResult(intent, SELECT_ROM_FILE);
+                startActivityForResult(intent, Action.SELECT_ROM_FILE);
                 break;
             case R.id.outputCardView:
                 renameOutputRom();
@@ -160,7 +160,7 @@ public class PatchingFragment extends ActionFragment implements View.OnClickList
     }
 
     @Override
-    public void onActivityResult(int requestCode, int resultCode, Intent data){
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
         Log.d(LOG_TAG, "onActivityResult(" + requestCode + "," + resultCode + "," + data);
         if (resultCode == Activity.RESULT_OK) {
             String path = data.getStringExtra("path");
@@ -171,56 +171,59 @@ public class PatchingFragment extends ActionFragment implements View.OnClickList
             }
 
             switch (requestCode) {
-                    case SELECT_ROM_FILE:
-                        romPath = path;
-                        romNameTextView.setVisibility(View.VISIBLE);
-                        romNameTextView.setText(fpath.getName());
-                        Settings.setLastRomDir(getActivity(), fpath.getParent());
-                        outputPath = makeOutputPath(path);
-                        outputNameTextView.setText(new File(outputPath).getName());
-                        break;
-                    case SELECT_PATCH_FILE:
-                        patchPath = path;
-                        patchNameTextView.setVisibility(View.VISIBLE);
-                        patchNameTextView.setText(fpath.getName());
-                        Settings.setLastPatchDir(getActivity(), fpath.getParent());
-                        break;
+                case Action.SELECT_ROM_FILE:
+                    romPath = path;
+                    romNameTextView.setVisibility(View.VISIBLE);
+                    romNameTextView.setText(fpath.getName());
+                    Settings.setLastRomDir(getActivity(), fpath.getParent());
+                    outputPath = makeOutputPath(path);
+                    outputNameTextView.setText(new File(outputPath).getName());
+                    break;
+                case Action.SELECT_PATCH_FILE:
+                    patchPath = path;
+                    patchNameTextView.setVisibility(View.VISIBLE);
+                    patchNameTextView.setText(fpath.getName());
+                    Settings.setLastPatchDir(getActivity(), fpath.getParent());
+                    break;
             }
         }
         super.onActivityResult(requestCode, resultCode, data);
     }
 
     private String makeOutputPath(String fullname) {
-        String dir = FilenameUtils.getPath(fullname);
+        String dir = Settings.getOutputDir(getActivity());
+        if (dir.equals("")) { // get ROM directory
+            dir = FilenameUtils.getFullPath(fullname);
+        }
         String baseName = FilenameUtils.getBaseName(fullname);
         String ext = FilenameUtils.getExtension(fullname);
         return FilenameUtils.concat(dir, baseName.concat(" [patched].").concat(ext));
     }
 
-    public boolean runAction(){
-        if (romPath == null & patchPath == null){
+    public boolean runAction() {
+        if (romPath == null & patchPath == null) {
             Toast.makeText(getActivity(), getString(R.string.main_activity_toast_rom_and_patch_not_selected), Toast.LENGTH_LONG).show();
             return false;
-        } else if (romPath == null){
+        } else if (romPath == null) {
             Toast.makeText(getActivity(), getString(R.string.main_activity_toast_rom_not_selected), Toast.LENGTH_LONG).show();
             return false;
-        } else if (patchPath == null){
+        } else if (patchPath == null) {
             Toast.makeText(getActivity(), getString(R.string.main_activity_toast_patch_not_selected), Toast.LENGTH_LONG).show();
             return false;
         }
 
         Intent intent = new Intent(getActivity(), WorkerService.class);
-        intent.putExtra("action", Globals.ACTION_PATCHING);
+        intent.putExtra("action", Action.APPLY_PATCH);
         intent.putExtra("romPath", romPath);
         intent.putExtra("patchPath", patchPath);
         intent.putExtra("outputPath", outputPath);
-        getActivity().startService(intent);
+        Utils.startForegroundService(getActivity(), intent);
 
-        Toast.makeText(getActivity(), R.string.toast_patching_started_check_notify,Toast.LENGTH_SHORT).show();
+        Toast.makeText(getActivity(), R.string.toast_patching_started_check_notify, Toast.LENGTH_SHORT).show();
         return true;
     }
 
-    private void renameOutputRom(){
+    private void renameOutputRom() {
         if (romPath == null) {
             Toast.makeText(getActivity(), getString(R.string.main_activity_toast_rom_not_selected), Toast.LENGTH_LONG).show();
             return;
@@ -244,16 +247,21 @@ public class PatchingFragment extends ActionFragment implements View.OnClickList
             @Override
             public void onClick(DialogInterface dialog, int which) {
                 String newName = input.getText().toString();
-                if (newName.equals(romNameTextView.getText())) {
-                    Toast.makeText(getActivity(), R.string.dialog_rename_error_same_name, Toast.LENGTH_LONG).show();
+                if (newName.equals("")) {
+                    Toast.makeText(getActivity(), R.string.dialog_rename_error_empty_name, Toast.LENGTH_LONG).show();
                     return;
                 }
                 if (newName.contains("/")) {
                     newName = newName.replaceAll("/", "_");
                     Toast.makeText(getActivity(), R.string.dialog_rename_error_invalid_chars, Toast.LENGTH_LONG).show();
                 }
+                String newPath = new File(outputPath).getParent().concat(File.separator).concat(newName);
+                if (FilenameUtils.equals(newPath, romPath)) {
+                    Toast.makeText(getActivity(), R.string.dialog_rename_error_same_name, Toast.LENGTH_LONG).show();
+                    return;
+                }
                 outputNameTextView.setText(newName);
-                outputPath = new File(romPath).getParent().concat(File.separator).concat(newName);
+                outputPath = newPath;
             }
         });
         dialog.setNegativeButton(R.string.dialog_rename_cancel, new DialogInterface.OnClickListener() {

app/src/main/java/org/emunix/unipatcher/ui/fragment/SettingsFragment.java

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2016 Boris Timofeev
+Copyright (C) 2016-2017 Boris Timofeev
 
 This file is part of UniPatcher.
 
@@ -36,7 +36,7 @@ public class SettingsFragment extends PreferenceFragmentCompat implements Shared
     @Override
     public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
                                           String key) {
-        if (key.equals("theme")) {
+        if (key.equals("theme") || key.equals("output_directory")) {
             Toast.makeText(getActivity(), R.string.settings_theme_message_restart_app, Toast.LENGTH_SHORT).show();
         }
     }

app/src/main/java/org/emunix/unipatcher/ui/fragment/SmdFixChecksumFragment.java

@@ -31,7 +31,7 @@ import android.view.ViewGroup;
 import android.widget.TextView;
 import android.widget.Toast;
 
-import org.emunix.unipatcher.Globals;
+import org.emunix.unipatcher.Action;
 import org.emunix.unipatcher.R;
 import org.emunix.unipatcher.Settings;
 import org.emunix.unipatcher.Utils;
@@ -43,13 +43,13 @@ import java.io.File;
 public class SmdFixChecksumFragment extends ActionFragment implements View.OnClickListener {
     private static final String LOG_TAG = "org.emunix.unipatcher";
 
-    private static final int SELECT_ROM_FILE = 1;
 
     private TextView romNameTextView;
     private TextView fixChecksumInfoTextview;
     private String romPath = null;
 
-    public SmdFixChecksumFragment() {}
+    public SmdFixChecksumFragment() {
+    }
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
@@ -87,7 +87,7 @@ public class SmdFixChecksumFragment extends ActionFragment implements View.OnCli
     }
 
     private void restoreState(Bundle savedInstanceState) {
-        if (savedInstanceState != null){
+        if (savedInstanceState != null) {
             romPath = savedInstanceState.getString("romPath");
             if (romPath != null)
                 romNameTextView.setText(new File(romPath).getName());
@@ -101,19 +101,19 @@ public class SmdFixChecksumFragment extends ActionFragment implements View.OnCli
     }
 
     @Override
-    public void onClick(View view){
+    public void onClick(View view) {
         Intent intent = new Intent(getActivity(), FilePickerActivity.class);
         switch (view.getId()) {
             case R.id.romCardView:
                 intent.putExtra("title", getString(R.string.file_picker_activity_title_select_rom));
                 intent.putExtra("directory", Settings.getRomDir(getActivity()));
-                startActivityForResult(intent, SELECT_ROM_FILE);
+                startActivityForResult(intent, Action.SELECT_ROM_FILE);
                 break;
         }
     }
 
     @Override
-    public void onActivityResult(int requestCode, int resultCode, Intent data){
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
         Log.d(LOG_TAG, "onActivityResult(" + requestCode + "," + resultCode + "," + data);
         if (resultCode == Activity.RESULT_OK) {
             String path = data.getStringExtra("path");
@@ -123,7 +123,7 @@ public class SmdFixChecksumFragment extends ActionFragment implements View.OnCli
             }
 
             switch (requestCode) {
-                case SELECT_ROM_FILE:
+                case Action.SELECT_ROM_FILE:
                     romPath = path;
                     romNameTextView.setVisibility(View.VISIBLE);
                     romNameTextView.setText(new File(path).getName());
@@ -134,18 +134,18 @@ public class SmdFixChecksumFragment extends ActionFragment implements View.OnCli
         super.onActivityResult(requestCode, resultCode, data);
     }
 
-    public boolean runAction(){
-        if (romPath == null){
+    public boolean runAction() {
+        if (romPath == null) {
             Toast.makeText(getActivity(), getString(R.string.main_activity_toast_rom_not_selected), Toast.LENGTH_LONG).show();
             return false;
         }
 
         Intent intent = new Intent(getActivity(), WorkerService.class);
-        intent.putExtra("action", Globals.ACTION_SMD_FIX_CHECKSUM);
         intent.putExtra("romPath", romPath);
-        getActivity().startService(intent);
+        intent.putExtra("action", Action.SMD_FIX_CHECKSUM);
+        Utils.startForegroundService(getActivity(), intent);
 
-        Toast.makeText(getActivity(), R.string.notify_smd_fix_checksum_started_check_notify,Toast.LENGTH_SHORT).show();
+        Toast.makeText(getActivity(), R.string.notify_smd_fix_checksum_started_check_notify, Toast.LENGTH_SHORT).show();
         return true;
     }
 }

app/src/main/java/org/emunix/unipatcher/ui/fragment/SnesSmcHeaderFragment.java

@@ -31,7 +31,7 @@ import android.view.ViewGroup;
 import android.widget.TextView;
 import android.widget.Toast;
 
-import org.emunix.unipatcher.Globals;
+import org.emunix.unipatcher.Action;
 import org.emunix.unipatcher.R;
 import org.emunix.unipatcher.Settings;
 import org.emunix.unipatcher.Utils;
@@ -43,8 +43,6 @@ import java.io.File;
 
 public class SnesSmcHeaderFragment extends ActionFragment implements View.OnClickListener {
     private static final String LOG_TAG = "org.emunix.unipatcher";
-    private static final int SELECT_ROM_FILE = 1;
-    private static final int SELECT_HEADER_FILE = 2;
 
     private TextView romNameTextView;
     private TextView headerNameTextView;
@@ -55,7 +53,8 @@ public class SnesSmcHeaderFragment extends ActionFragment implements View.OnClic
 
     private int action = 0;
 
-    public SnesSmcHeaderFragment() {}
+    public SnesSmcHeaderFragment() {
+    }
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
@@ -69,7 +68,7 @@ public class SnesSmcHeaderFragment extends ActionFragment implements View.OnClic
         romNameTextView = (TextView) view.findViewById(R.id.romNameTextView);
         headerNameTextView = (TextView) view.findViewById(R.id.headerNameTextView);
         headerInfoTextView = (TextView) view.findViewById(R.id.headerInfoTextView);
-        
+
         CardView romCardView = (CardView) view.findViewById(R.id.romCardView);
         romCardView.setOnClickListener(this);
         headerCardView = (CardView) view.findViewById(R.id.headerCardView);
@@ -99,14 +98,14 @@ public class SnesSmcHeaderFragment extends ActionFragment implements View.OnClic
     }
 
     private void restoreState(Bundle savedInstanceState) {
-        if (savedInstanceState != null){
+        if (savedInstanceState != null) {
             romPath = savedInstanceState.getString("romPath");
             headerPath = savedInstanceState.getString("headerPath");
             action = savedInstanceState.getInt("action");
-            if (action == Globals.ACTION_SNES_ADD_SMC_HEADER) {
+            if (action == Action.SNES_ADD_SMC_HEADER) {
                 headerInfoTextView.setText(R.string.snes_smc_header_will_be_added);
                 headerCardView.setVisibility(View.VISIBLE);
-            } else if (action == Globals.ACTION_SNES_DELETE_SMC_HEADER) {
+            } else if (action == Action.SNES_DELETE_SMC_HEADER) {
                 headerInfoTextView.setText(R.string.snes_smc_header_will_be_removed);
                 headerCardView.setVisibility(View.GONE);
             }
@@ -126,23 +125,23 @@ public class SnesSmcHeaderFragment extends ActionFragment implements View.OnClic
     }
 
     @Override
-    public void onClick(View view){
+    public void onClick(View view) {
         Intent intent = new Intent(getActivity(), FilePickerActivity.class);
         switch (view.getId()) {
             case R.id.romCardView:
                 intent.putExtra("title", getString(R.string.file_picker_activity_title_select_rom));
                 intent.putExtra("directory", Settings.getRomDir(getActivity()));
-                startActivityForResult(intent, SELECT_ROM_FILE);
+                startActivityForResult(intent, Action.SELECT_ROM_FILE);
                 break;
             case R.id.headerCardView:
                 intent.putExtra("title", getString(R.string.file_picker_activity_title_select_header));
-                startActivityForResult(intent, SELECT_HEADER_FILE);
+                startActivityForResult(intent, Action.SELECT_HEADER_FILE);
                 break;
         }
     }
 
     @Override
-    public void onActivityResult(int requestCode, int resultCode, Intent data){
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
         Log.d(LOG_TAG, "onActivityResult(" + requestCode + "," + resultCode + "," + data);
         if (resultCode == Activity.RESULT_OK) {
             String path = data.getStringExtra("path");
@@ -152,25 +151,25 @@ public class SnesSmcHeaderFragment extends ActionFragment implements View.OnClic
             }
 
             switch (requestCode) {
-                case SELECT_ROM_FILE:
+                case Action.SELECT_ROM_FILE:
                     romPath = path;
                     romNameTextView.setVisibility(View.VISIBLE);
                     romNameTextView.setText(new File(path).getName());
                     Settings.setLastRomDir(getActivity(), new File(path).getParent());
                     SnesSmcHeader checker = new SnesSmcHeader();
                     if (checker.isHasSmcHeader(new File(path))) {
-                        action = Globals.ACTION_SNES_DELETE_SMC_HEADER;
+                        action = Action.SNES_DELETE_SMC_HEADER;
                         headerCardView.setVisibility(View.GONE);
                         headerInfoTextView.setText(R.string.snes_smc_header_will_be_removed);
                     } else {
-                        action = Globals.ACTION_SNES_ADD_SMC_HEADER;
+                        action = Action.SNES_ADD_SMC_HEADER;
                         headerCardView.setVisibility(View.VISIBLE);
                         headerInfoTextView.setText(R.string.snes_smc_header_will_be_added);
                     }
                     headerPath = null;
                     headerNameTextView.setText(R.string.main_activity_tap_to_select);
                     break;
-                case SELECT_HEADER_FILE:
+                case Action.SELECT_HEADER_FILE:
                     headerPath = path;
                     headerNameTextView.setText(new File(path).getName());
                     break;
@@ -179,8 +178,8 @@ public class SnesSmcHeaderFragment extends ActionFragment implements View.OnClic
         super.onActivityResult(requestCode, resultCode, data);
     }
 
-    public boolean runAction(){
-        if (romPath == null){
+    public boolean runAction() {
+        if (romPath == null) {
             Toast.makeText(getActivity(), getString(R.string.main_activity_toast_rom_not_selected), Toast.LENGTH_LONG).show();
             return false;
         }
@@ -189,9 +188,9 @@ public class SnesSmcHeaderFragment extends ActionFragment implements View.OnClic
         intent.putExtra("action", action);
         intent.putExtra("romPath", romPath);
         intent.putExtra("headerPath", headerPath);
-        getActivity().startService(intent);
+        Utils.startForegroundService(getActivity(), intent);
 
-        if (action == Globals.ACTION_SNES_ADD_SMC_HEADER) {
+        if (action == Action.SNES_ADD_SMC_HEADER) {
             Toast.makeText(getActivity(), R.string.notify_snes_add_smc_header_stared_check_noify, Toast.LENGTH_SHORT).show();
         } else {
             Toast.makeText(getActivity(), R.string.notify_snes_delete_smc_header_stared_check_noify, Toast.LENGTH_SHORT).show();

app/src/main/java/org/emunix/unipatcher/ui/notify/CreatePatchNotify.java

@@ -0,0 +1,57 @@
+/*
+ Copyright (c) 2017 Boris Timofeev
+
+ This file is part of UniPatcher.
+
+ UniPatcher is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ UniPatcher is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
+
+ */
+
+package org.emunix.unipatcher.ui.notify;
+
+import android.content.Context;
+import android.support.v4.app.NotificationCompat;
+
+import org.emunix.unipatcher.R;
+
+public class CreatePatchNotify extends Notify {
+
+    public CreatePatchNotify(Context c, String text) {
+        super(c);
+        notifyBuilder.setSmallIcon(R.drawable.ic_gamepad_variant_white_24dp);
+        notifyBuilder.setContentTitle(context.getString(R.string.notify_creating_patch));
+        notifyBuilder.setContentText(text);
+        notifyBuilder.setStyle(new NotificationCompat.BigTextStyle().bigText(text));
+        setSticked(true);
+        setProgress(true);
+    }
+
+    @Override
+    public void setCompleted() {
+        setProgress(false);
+        setSticked(false);
+        notifyBuilder.setTicker(context.getText(R.string.notify_create_patch_complete));
+        notifyBuilder.setContentTitle(context.getText(R.string.notify_create_patch_complete));
+    }
+
+    @Override
+    public void setFailed(String message) {
+        setProgress(false);
+        setSticked(false);
+        notifyBuilder.setTicker(context.getText(R.string.notify_error));
+        notifyBuilder.setContentTitle(context.getString(R.string.notify_error));
+        notifyBuilder.setContentText(message);
+        notifyBuilder.setStyle(new NotificationCompat.BigTextStyle().bigText(message));
+    }
+}

app/src/main/java/org/emunix/unipatcher/ui/notify/Notify.java

@@ -24,6 +24,7 @@ import android.content.Intent;
 import android.support.v4.app.NotificationCompat;
 import android.support.v4.app.NotificationManagerCompat;
 
+import org.emunix.unipatcher.UniPatcher;
 import org.emunix.unipatcher.ui.activity.MainActivity;
 
 public abstract class Notify {
@@ -40,9 +41,8 @@ public abstract class Notify {
 
         Intent notificationIntent = new Intent(context, MainActivity.class);
         notificationIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP);
-        notifyBuilder = new NotificationCompat.Builder(context);
+        notifyBuilder = new NotificationCompat.Builder(context, UniPatcher.NOTIFICATION_CHANNEL_ID);
         notifyBuilder.setContentIntent(PendingIntent.getActivity(context, 0, notificationIntent, PendingIntent.FLAG_CANCEL_CURRENT));
-        //notifyMng = (NotificationManager) context.getSystemService(context.NOTIFICATION_SERVICE);
         notifyMng = NotificationManagerCompat.from(context);
     }
 
@@ -68,6 +68,7 @@ public abstract class Notify {
     }
 
     public abstract void setCompleted();
+
     public abstract void setFailed(String message);
 
     public void setProgress(boolean isEnabled) {

app/src/main/java/org/emunix/unipatcher/ui/notify/PatchingNotify.java

@@ -28,7 +28,7 @@ public class PatchingNotify extends Notify {
 
     public PatchingNotify(Context c, String text) {
         super(c);
-        notifyBuilder.setSmallIcon(R.drawable.ic_stat_patching);
+        notifyBuilder.setSmallIcon(R.drawable.ic_gamepad_variant_white_24dp);
         notifyBuilder.setContentTitle(context.getString(R.string.notify_applying_patch));
         notifyBuilder.setContentText(text);
         notifyBuilder.setStyle(new NotificationCompat.BigTextStyle().bigText(text));

app/src/main/java/org/emunix/unipatcher/ui/notify/SmdFixChecksumNotify.java

@@ -28,7 +28,7 @@ public class SmdFixChecksumNotify extends Notify {
 
     public SmdFixChecksumNotify(Context c, String text) {
         super(c);
-        notifyBuilder.setSmallIcon(R.drawable.ic_stat_patching);
+        notifyBuilder.setSmallIcon(R.drawable.ic_gamepad_variant_white_24dp);
         notifyBuilder.setContentTitle(context.getString(R.string.notify_smd_fix_checksum_in_progress));
         notifyBuilder.setContentText(text);
         notifyBuilder.setStyle(new NotificationCompat.BigTextStyle().bigText(text));

app/src/main/java/org/emunix/unipatcher/ui/notify/SnesAddSmcHeaderNotify.java

@@ -27,7 +27,7 @@ import org.emunix.unipatcher.R;
 public class SnesAddSmcHeaderNotify extends Notify {
     public SnesAddSmcHeaderNotify(Context c, String text) {
         super(c);
-        notifyBuilder.setSmallIcon(R.drawable.ic_stat_patching);
+        notifyBuilder.setSmallIcon(R.drawable.ic_gamepad_variant_white_24dp);
         notifyBuilder.setContentTitle(context.getString(R.string.notify_snes_add_smc_header_in_progress));
         notifyBuilder.setContentText(text);
         notifyBuilder.setStyle(new NotificationCompat.BigTextStyle().bigText(text));

app/src/main/java/org/emunix/unipatcher/ui/notify/SnesDeleteSmcHeaderNotify.java

@@ -27,7 +27,7 @@ import org.emunix.unipatcher.R;
 public class SnesDeleteSmcHeaderNotify extends Notify {
     public SnesDeleteSmcHeaderNotify(Context c, String text) {
         super(c);
-        notifyBuilder.setSmallIcon(R.drawable.ic_stat_patching);
+        notifyBuilder.setSmallIcon(R.drawable.ic_gamepad_variant_white_24dp);
         notifyBuilder.setContentTitle(context.getString(R.string.notify_snes_delete_smc_header_in_progress));
         notifyBuilder.setContentText(text);
         notifyBuilder.setStyle(new NotificationCompat.BigTextStyle().bigText(text));

app/src/main/res/anim/slide_from_bottom.xml

@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <set xmlns:android="http://schemas.android.com/apk/res/android"
-    android:interpolator="@android:anim/decelerate_interpolator">
+     android:interpolator="@android:anim/decelerate_interpolator">
 
     <translate
+        android:duration="500"
         android:fromYDelta="100%"
-        android:toYDelta="0"
-        android:duration="500" />
+        android:toYDelta="0"/>
 
 </set>