Fullscreen modal flutter

Add fullscreen modal on a page in flutter app

import 'package:flutter/material.dart';

class TutorialOverlay extends ModalRoute<void> {
  @override
  Duration get transitionDuration => Duration(milliseconds: 500);

  @override
  bool get opaque => false;

  @override
  bool get barrierDismissible => false;

  @override
  Color get barrierColor => Colors.black.withOpacity(0.5);

  @override
  String get barrierLabel => null;

  @override
  bool get maintainState => true;

  @override
  Widget buildPage(
      BuildContext context,
      Animation<double> animation,
      Animation<double> secondaryAnimation,
      ) {
    // This makes sure that text and other content follows the material style
    return Material(
      type: MaterialType.transparency,
      // make sure that the overlay content is not cut off
      child: SafeArea(
        child: _buildOverlayContent(context),
      ),
    );
  }

  Widget _buildOverlayContent(BuildContext context) {
    return Center(
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: <Widget>[
          Text(
            'This is a nice overlay',
            style: TextStyle(color: Colors.white, fontSize: 30.0),
          ),
          RaisedButton(
            onPressed: () => Navigator.pop(context),
            child: Text('Dismiss'),
          )
        ],
      ),
    );
  }

  @override
  Widget buildTransitions(
      BuildContext context, Animation<double> animation, Animation<double> secondaryAnimation, Widget child) {
    // You can add your own animations for the overlay content
    return FadeTransition(
      opacity: animation,
      child: ScaleTransition(
        scale: animation,
        child: child,
      ),
    );
  }
}


// Example application:
void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Playground',
      home: TestPage(),
    );
  }
}

class TestPage extends StatelessWidget {
  void _showOverlay(BuildContext context) {
    Navigator.of(context).push(TutorialOverlay());
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('Test')),
      body: Padding(
        padding: EdgeInsets.all(16.0),
        child: Center(
          child: RaisedButton(
            onPressed: () => _showOverlay(context),
            child: Text('Show Overlay'),
          ),
        ),
      ),
    );
  }
}

Source: stackoverflow.com

Similar codes

2 votes138 views2 answers
Flutter lock orientation for page
Dart
0 vote151 views1 answer
Flutter floor database command
Dart
4 votes150 views2 answers
Data types in flutter
Dart
0 vote178 views2 answers
Dart while
Dart
0 vote141 views1 answer
Flutter text direction rtl
Dart
0 vote130 views1 answer
How to set device into autorotate in flutter
Dart
1 vote140 views1 answer
How to give bottom padding in Listview in flutter
Dart
0 vote148 views1 answer
Dart list remove item by text
Dart
0 vote90 views1 answer
Flutter toast not working
Dart
2 votes139 views3 answers
How to disable screen rotation in flutter
Dart