Flutter Weekly Assignment 2

weekly_assignment_1/lib/main.dart

@@ -61,6 +61,34 @@ class _MyHomePageState extends State<MyHomePage> {
     });
   }
 
+  void _decrementCounter() {
+    setState(() {
+      // This call to setState tells the Flutter framework that something has
+      // changed in this State, which causes it to rerun the build method below
+      // so that the display can reflect the updated values. If we changed
+      // _counter without calling setState(), then the build method would not be
+      // called again, and so nothing would appear to happen.
+      _counter--;
+    });
+  }
+
+  void _resetToZero() {
+    setState(() {
+      _counter = 0;
+    });
+  }
+
+  _getMessage(int c) {
+    var output = '';
+    if (c % 3 == 0) {
+      output = '${output}fizz';
+    }
+    if (c % 5 == 0) {
+      output = '${output}buzz';
+    }
+    return output;
+  }
+
   @override
   Widget build(BuildContext context) {
     // This method is rerun every time setState is called, for instance as done
@@ -95,21 +123,29 @@ class _MyHomePageState extends State<MyHomePage> {
           // horizontal).
           mainAxisAlignment: MainAxisAlignment.center,
           children: <Widget>[
-            const Text(
-              'You have pushed the button this many times:',
-            ),
-            Text(
-              '$_counter',
-              style: Theme.of(context).textTheme.headline4,
+            const Text('You have pushed the button this many times:',
+                style: TextStyle(fontSize: 25)),
+            Text('$_counter', style: TextStyle(fontSize: 50)),
+            Text('${_getMessage(_counter)}', style: TextStyle(fontSize: 50)),
+            Row(
+              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
+              children: <Widget>[
+                FloatingActionButton(
+                  onPressed: _resetToZero,
+                  child: const Icon(Icons.exposure_zero),
+                ),
+                FloatingActionButton(
+                    onPressed: _decrementCounter,
+                    child: const Icon(Icons.remove)),
+                FloatingActionButton(
+                  onPressed: _incrementCounter,
+                  child: const Icon(Icons.add),
+                ),
+              ],
             ),
           ],
         ),
       ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: _incrementCounter,
-        tooltip: 'Increment',
-        child: const Icon(Icons.add),
-      ), // This trailing comma makes auto-formatting nicer for build methods.
     );
   }
 }

weekly_assignment_1/test/widget_test.dart

@@ -65,7 +65,8 @@ void main() {
     expect(find.text('1'), findsNothing);
   });
 
-  testWidgets('Fizz shows up when the counter is divisible by 3', (WidgetTester tester) async {
+  testWidgets('Fizz shows up when the counter is divisible by 3',
+      (WidgetTester tester) async {
     // Build our app and trigger a frame.
     await tester.pumpWidget(const MyApp());
 
@@ -79,7 +80,8 @@ void main() {
     expect(find.text('fizz'), findsOneWidget);
   });
 
-  testWidgets('Buzz shows up when the counter is divisible by 5', (WidgetTester tester) async {
+  testWidgets('Buzz shows up when the counter is divisible by 5',
+      (WidgetTester tester) async {
     // Build our app and trigger a frame.
     await tester.pumpWidget(const MyApp());
 
@@ -93,7 +95,8 @@ void main() {
     expect(find.text('buzz'), findsOneWidget);
   });
 
-  testWidgets('FizzBuzz shows up when the counter is divisible by 3 & 5', (WidgetTester tester) async {
+  testWidgets('FizzBuzz shows up when the counter is divisible by 3 & 5',
+      (WidgetTester tester) async {
     // Build our app and trigger a frame.
     await tester.pumpWidget(const MyApp());
 

weekly_assignment_2/lib/main.dart

@@ -24,7 +24,7 @@ class MyApp extends StatelessWidget {
         // is not restarted.
         primarySwatch: Colors.blue,
       ),
-      home: const MyHomePage(title: 'Flutter Demo Home Page'),
+      home: const MyHomePage(title: 'Text Editing Demo'),
     );
   }
 }
@@ -48,16 +48,43 @@ class MyHomePage extends StatefulWidget {
 }
 
 class _MyHomePageState extends State<MyHomePage> {
-  int _counter = 0;
+  final _topController = TextEditingController();
+  final _botController = TextEditingController();
+  String _output = '';
 
-  void _incrementCounter() {
+  @override
+  void initState() {
+    super.initState();
+    _topController.addListener(() {
+      final String text = _topController.text;
+      _topController.value = _topController.value.copyWith(
+        text: text,
+        selection:
+            TextSelection(baseOffset: text.length, extentOffset: text.length),
+        composing: TextRange.empty,
+      );
+    });
+    _botController.addListener(() {
+      final String text = _botController.text;
+      _botController.value = _botController.value.copyWith(
+        text: text,
+        selection:
+            TextSelection(baseOffset: text.length, extentOffset: text.length),
+        composing: TextRange.empty,
+      );
+    });
+  }
+
+  @override
+  void dispose() {
+    _topController.dispose();
+    _botController.dispose();
+    super.dispose();
+  }
+
+  void _displayResult() {
     setState(() {
-      // This call to setState tells the Flutter framework that something has
-      // changed in this State, which causes it to rerun the build method below
-      // so that the display can reflect the updated values. If we changed
-      // _counter without calling setState(), then the build method would not be
-      // called again, and so nothing would appear to happen.
-      _counter++;
+      _output = 'Hello ${_topController.text} ${_botController.text}';
     });
   }
 
@@ -95,18 +122,31 @@ class _MyHomePageState extends State<MyHomePage> {
           // horizontal).
           mainAxisAlignment: MainAxisAlignment.center,
           children: <Widget>[
-            const Text(
-              'You have pushed the button this many times:',
+            // Container(child: TextFormField()),
+            Container(
+              alignment: Alignment.center,
+              padding: const EdgeInsets.all(6),
+              child: TextFormField(
+                controller: _topController,
+                decoration: const InputDecoration(
+                    border: OutlineInputBorder(), labelText: 'First Name'),
+              ),
             ),
-            Text(
-              '$_counter',
-              style: Theme.of(context).textTheme.headline4,
+            Container(
+              alignment: Alignment.center,
+              padding: const EdgeInsets.all(6),
+              child: TextFormField(
+                controller: _botController,
+                decoration: const InputDecoration(
+                    border: OutlineInputBorder(), labelText: 'Last Name'),
+              ),
             ),
+            Text(_output, style: const TextStyle(fontSize: 35)),
           ],
         ),
       ),
       floatingActionButton: FloatingActionButton(
-        onPressed: _incrementCounter,
+        onPressed: _displayResult,
         tooltip: 'Increment',
         child: const Icon(Icons.add),
       ), // This trailing comma makes auto-formatting nicer for build methods.