MaterialBanner In Flutter

MaterialBanner In Flutter :

This flutter tutorial post is MaterialBanner widget in flutter.
A banner displays very important, message, and other provides actions. Actions using MaterialBanner widget dismissed or other action.

const MaterialBanner({
   Key key,
   @required this.content,
   this.contentTextStyle,
   @required this.actions,
   this.leading,
   this.backgroundColor,
   this.padding,
   this.leadingPadding,
   this.forceActionsBelow = false,
 })  

Screenshot :

Material Banner.dart

class HomePage extends StatefulWidget {
  @override
  _HomePageState createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  final TextStyle whiteText = TextStyle(
    color: Colors.white,
  );

  bool shouldShowBanner = true;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: Text("Material Banner"),
        ),
        body: Column(children: <Widget>[
          if (shouldShowBanner)
            MaterialBanner(
                padding: const EdgeInsets.all(20),
                contentTextStyle: whiteText,
                content: Text(
                  "Flutter Tutorial",
                ),
                leading: Icon(Icons.credit_card, color: Colors.white),
                backgroundColor: Colors.indigo,
                actions: <Widget>[
                  FlatButton(
                      child: Text("UPDATE", style: whiteText),
                      onPressed: _hideBanner),
                  FlatButton(
                      child: Text("DISMISS", style: whiteText),
                      onPressed: _hideBanner)
                ])
        ]));
  }

  void _hideBanner() {
    setState(() => shouldShowBanner = false);
  }
}

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