Added support for D-pad navigation using a Android TV remote control (#…

…586)

example/lib/main.dart

@@ -1,27 +1,32 @@
 import 'package:better_player_example/pages/welcome_page.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:flutter_localizations/flutter_localizations.dart';
 
 void main() => runApp(MyApp());
 
 class MyApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      title: 'Better player demo',
-      localizationsDelegates: [
-        GlobalMaterialLocalizations.delegate,
-        GlobalWidgetsLocalizations.delegate,
-      ],
-      supportedLocales: [
-        const Locale('en', 'US'),
-        const Locale('pl', 'PL'),
-      ],
-      theme: ThemeData(
-        primarySwatch: Colors.green,
-        accentColor: Colors.green,
-      ),
-      home: WelcomePage(),
-    );
+    return Shortcuts(
+        shortcuts: <LogicalKeySet, Intent>{
+          LogicalKeySet(LogicalKeyboardKey.select): const ActivateIntent(),
+        },
+        child: MaterialApp(
+          title: 'Better player demo',
+          localizationsDelegates: [
+            GlobalMaterialLocalizations.delegate,
+            GlobalWidgetsLocalizations.delegate,
+          ],
+          supportedLocales: [
+            const Locale('en', 'US'),
+            const Locale('pl', 'PL'),
+          ],
+          theme: ThemeData(
+            primarySwatch: Colors.green,
+            accentColor: Colors.green,
+          ),
+          home: WelcomePage(),
+        ));
   }
 }