Flutter Example - Screen Orientations

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

class ScreenOrientationsDemo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text("AppBar")),
      body: Padding(
        padding: const EdgeInsets.all(20),
        child: ListView(
          children: <Widget>[
            Container(
              height: 50,
              color: Colors.orange,
              alignment: Alignment(0,0),
              margin: const EdgeInsets.only(bottom: 15),
              child: Text(
                "Do this example on a real phone, not an emulator.",
                style: TextStyle(color: Colors.white),
              ),
            ),
            Container(
              width: 300,
              child: RaisedButton(
                child: Text("Set All (default)"),
                onPressed: () {
                  SystemChrome.setPreferredOrientations([
                    DeviceOrientation.portraitUp,
                    DeviceOrientation.portraitDown,
                    DeviceOrientation.landscapeLeft,
                    DeviceOrientation.landscapeRight
                  ]);
                },
              ),
            ),
            Divider(
              height: 10,
              color: Colors.grey,
              indent: 70,
              endIndent: 70,
            ),
            Container(
              width: 300,
              child: RaisedButton(
                child: Text("DeviceOrientation.landscapes"),
                onPressed: () {
                  SystemChrome.setPreferredOrientations([
                    DeviceOrientation.landscapeLeft,
                    DeviceOrientation.landscapeRight,
                  ]);
                },
              ),
            ),
            Container(
              width: 300,
              child: RaisedButton(
                child: Text("DeviceOrientation.potraities"),
                onPressed: () {
                  SystemChrome.setPreferredOrientations([
                    DeviceOrientation.portraitUp,
                    DeviceOrientation.portraitDown,
                  ]);
                },
              ),
            ),
            Divider(
              height: 10,
              color: Colors.grey,
              indent: 70,
              endIndent: 70,
            ),
            Container(
              width: 300,
              child: RaisedButton(
                child: Text("DeviceOrientation.landscapeRight"),
                onPressed: () {
                  SystemChrome.setPreferredOrientations(
                      [DeviceOrientation.landscapeRight]);
                },
              ),
            ),
            Container(
              width: 300,
              child: RaisedButton(
                child: Text("DeviceOrientation.landscapeLeft"),
                onPressed: () {
                  SystemChrome.setPreferredOrientations(
                      [DeviceOrientation.landscapeLeft]);
                },
              ),
            ),
            Container(
              width: 300,
              child: RaisedButton(
                child: Text("DeviceOrientation.portraitUp"),
                onPressed: () {
                  SystemChrome.setPreferredOrientations(
                      [DeviceOrientation.portraitUp]);
                },
              ),
            ),
            Container(
              width: 300,
              child: RaisedButton(
                child: Text("DeviceOrientation.portraitDown"),
                onPressed: () {
                  SystemChrome.setPreferredOrientations(
                      [DeviceOrientation.portraitDown]);
                },
              ),
            ),
          ],
        ),
      ),
    );
  }
}

 

 

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