Still can't edit both parts, but reformatted and added delete functionality

lib/NoZeroDays.dart

@@ -66,46 +66,48 @@ class _NoZeroDaysState extends State<NoZeroDays> {
   }
 
   void _editEntry(Entry entry) {
-    Navigator.of(context).push(
+    Navigator.of(context).push(new MaterialPageRoute(builder: (context) {
-      new MaterialPageRoute(
-          builder: (context) {
       final t = new Form(
         child: new Column(
           children: <Widget>[
-                  new IconButton(icon: new Icon(Icons.date_range), onPressed:
+            new IconButton(
-            () {
+                icon: new Icon(Icons.date_range),
+                onPressed: () {
                   Future<DateTime> newDate = showDatePicker(
                       context: (context),
                       initialDate: entry.date,
                       firstDate: new DateTime(DateTime.now().year),
-                        lastDate: new DateTime(DateTime.now().year + 1)
+                      lastDate: new DateTime(DateTime.now().year + 1));
-                    );
                   newDate.then((newValue) {
                     setState(() {
                       _zerodayslist.remove(entry);
-                        _zerodayslist.add(
+                      _zerodayslist.add(new Entry(newValue, entry.whatYouDid));
-                            new Entry(newValue, entry.whatYouDid));
                     });
                   });
                 }),
             new TextFormField(
               initialValue: entry.whatYouDid,
               onFieldSubmitted: (newValue) {
-                      setState((){
+                setState(() {
                   _zerodayslist.remove(entry);
                   _zerodayslist.add(new Entry(entry.date, newValue));
                 });
               },
-                  )
+            ),
           ],
         ),
       );
       return new Scaffold(
         appBar: new AppBar(title: new Text("Edit this entry")),
         body: t,
+        floatingActionButton: new FloatingActionButton(onPressed: () {
+          setState(() {_zerodayslist.remove(entry); });
+          Navigator.pop(context);
+        },
+        child: new Icon(Icons.delete)
+        ),
       );
-          })
+    }));
-    );
   }
 
   @override