back page with flutter android back button-CodePudding

What codes should I use to go back to the page with the flutter android back button? I looked inside youtube, especially on Stackoverflow, but I couldn't get any results.

CodePudding user response：

You can use WillPopScope

Here is example code:

class MyPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return WillPopScope(
      onWillPop: () async {
        // This function will handle back button
        // When true, it's can back to previous page
        // when false, back button will do nothing
        return true;
      },
      child: Scaffold(
        appBar: AppBar(
          title: const Text('Flutter WillPopScope demo'),
        ),
        body: Center(
          child: Text('Hello world')
        ),
      ),
    );
  }
}

CodePudding user response：

class Page2 extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new WillPopScope(
      child: new Scaffold(
        appBar: new AppBar(
          title: new Text('Page 2'),
        ),
        body: new Center(
          child: new Text('PAGE 2'),
        ),
      ),
      onWillPop: () async {
        return false;
      },
    );
  }
}

Future<T> pushPage<T>(BuildContext context, Widget page) {
  return Navigator.of(context)
      .push<T>(MaterialPageRoute(builder: (context) => page));
}
Can call the page like:

pushPage(context, Page2());