Flutter => showDialog / AlertDialog => No MaterialLocalizations found

Question

just new to Flutter but very impressed. I want to show a Dialog if a PushNotification arrives via Firebase \"onMessage\".

But every Time I get a Exception \"No MaterialL

Answer 1

In Order to Fix the error, You need to Call Your Main class as a home parameter of MaterialAppas Like Below.

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Welcome to Flutter',
      debugShowCheckedModeBanner: false,
      home: Main(),
    );
  }
}

& update your Build Method in Main Class as:

@override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Welcome to Flutter'),
      ),
      body: Column(children: [
        Center(
          child: Text('Hello World'),
        ),
        RaisedButton(
          onPressed: () {
            print("pushed?");
            _showPushDialog(context);
          },
          child: Text("press me"),
        )
      ]),
    );
  }