bottomBar commit

lib/main.dart

 import 'package:flutter/material.dart';
 
-void main() {
-  runApp(MyApp());
-}
+void main() => runApp(MyApp());
 
+/// This is the main application widget.
 class MyApp extends StatelessWidget {
-  // This widget is the root of your application.
+  static const String _title = 'Flutter Code Sample';
+
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      title: 'Flutter Demo',
-      theme: ThemeData(
-        // This is the theme of your application.
-        //
-        // Try running your application with "flutter run". You'll see the
-        // application has a blue toolbar. Then, without quitting the app, try
-        // changing the primarySwatch below to Colors.green and then invoke
-        // "hot reload" (press "r" in the console where you ran "flutter run",
-        // or simply save your changes to "hot reload" in a Flutter IDE).
-        // Notice that the counter didn't reset back to zero; the application
-        // is not restarted.
-        primarySwatch: Colors.blue,
-        // This makes the visual density adapt to the platform that you run
-        // the app on. For desktop platforms, the controls will be smaller and
-        // closer together (more dense) than on mobile platforms.
-        visualDensity: VisualDensity.adaptivePlatformDensity,
-      ),
-      home: MyHomePage(title: 'Flutter Demo Home Page'),
+      title: _title,
+      home: MyStatefulWidget(),
     );
   }
 }
 
-class MyHomePage extends StatefulWidget {
-  MyHomePage({Key key, this.title}) : super(key: key);
-
-  // This widget is the home page of your application. It is stateful, meaning
-  // that it has a State object (defined below) that contains fields that affect
-  // how it looks.
-
-  // This class is the configuration for the state. It holds the values (in this
-  // case the title) provided by the parent (in this case the App widget) and
-  // used by the build method of the State. Fields in a Widget subclass are
-  // always marked "final".
-
-  final String title;
+/// This is the stateful widget that the main application instantiates.
+class MyStatefulWidget extends StatefulWidget {
+  MyStatefulWidget({Key key}) : super(key: key);
 
   @override
-  _MyHomePageState createState() => _MyHomePageState();
+  _MyStatefulWidgetState createState() => _MyStatefulWidgetState();
 }
 
-class _MyHomePageState extends State<MyHomePage> {
-  int _counter = 0;
+/// This is the private State class that goes with MyStatefulWidget.
+class _MyStatefulWidgetState extends State<MyStatefulWidget> {
+  int _selectedIndex = 0;
+  static const TextStyle optionStyle =
+  TextStyle(fontSize: 30, fontWeight: FontWeight.bold);
+  static const List<Widget> _widgetOptions = <Widget>[
+    Text(
+      'Accueil',
+      style: optionStyle,
+    ),
+    Text(
+      'Mes jeux vidéos',
+      style: optionStyle,
+    ),
+    Text(
+      'Mes mangas',
+      style: optionStyle,
+    ),
+    Text(
+      'Oeuvres favorites',
+      style: optionStyle,
+    ),
+    Text(
+      'Informations',
+      style: optionStyle,
+    ),
+  ];
 
-  void _incrementCounter() {
+  void _onItemTapped(int index) {
     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++;
+      _selectedIndex = index;
     });
   }
 
   @override
   Widget build(BuildContext context) {
-    // This method is rerun every time setState is called, for instance as done
-    // by the _incrementCounter method above.
-    //
-    // The Flutter framework has been optimized to make rerunning build methods
-    // fast, so that you can just rebuild anything that needs updating rather
-    // than having to individually change instances of widgets.
     return Scaffold(
       appBar: AppBar(
-        // Here we take the value from the MyHomePage object that was created by
-        // the App.build method, and use it to set our appbar title.
-        title: Text(widget.title),
+        title: const Text('Gestion de Médias'),
       ),
       body: Center(
-        // Center is a layout widget. It takes a single child and positions it
-        // in the middle of the parent.
-        child: Column(
-          // Column is also a layout widget. It takes a list of children and
-          // arranges them vertically. By default, it sizes itself to fit its
-          // children horizontally, and tries to be as tall as its parent.
-          //
-          // Invoke "debug painting" (press "p" in the console, choose the
-          // "Toggle Debug Paint" action from the Flutter Inspector in Android
-          // Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
-          // to see the wireframe for each widget.
-          //
-          // Column has various properties to control how it sizes itself and
-          // how it positions its children. Here we use mainAxisAlignment to
-          // center the children vertically; the main axis here is the vertical
-          // axis because Columns are vertical (the cross axis would be
-          // horizontal).
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            Text(
-              'You have pushed the button this many times:',
+        child: _widgetOptions.elementAt(_selectedIndex),
       ),
-            Text(
-              '$_counter',
-              style: Theme.of(context).textTheme.headline4,
+      bottomNavigationBar: BottomNavigationBar(
+        type: BottomNavigationBarType.fixed,
+        items: const <BottomNavigationBarItem>[
+          BottomNavigationBarItem(
+            icon: Icon(Icons.home),
+            label: 'Accueil',
           ),
-          ],
+          BottomNavigationBarItem(
+            icon: Icon(Icons.videogame_asset),
+            label: 'Jeu Vidéo',
+          ),
+          BottomNavigationBarItem(
+            icon: Icon(Icons.menu_book),
+            label: 'Manga',
+          ),
+          BottomNavigationBarItem(
+            icon: Icon(Icons.favorite),
+            label: 'Aimés',
           ),
+          BottomNavigationBarItem(
+            icon: Icon(Icons.not_listed_location),
+            label: 'Infos',
+          ),
+        ],
+        currentIndex: _selectedIndex,
+        selectedItemColor: Colors.amber[800],
+        onTap: _onItemTapped,
       ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: _incrementCounter,
-        tooltip: 'Increment',
-        child: Icon(Icons.add),
-      ), // This trailing comma makes auto-formatting nicer for build methods.
     );
   }
 }
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