how to exit on press back button from a screen

Question

I am using go_router and I want to exit my app from a subroute when the user presses the back button. for example, I have routes '/', '/a', '/b', '/a/1'. now I from the '/a/1' route I want to exit the app when the user presses the back button(based on some condition). please help me

Answer 1

Wrap your Page's Scaffold with WillPopScope Widget and add this invokeMethod to onWillPop.

return WillPopScope(
      onWillPop: () async {
        await SystemChannels.platform.invokeMethod('SystemNavigator.pop');
        return false;
      },
      child: Scaffold(...),
   );