Flutter main.dart Navigator context does not include a Navigator

The didChangeAppLifecycleState method does not provide any context unlike the build method. You would have to navigate without using context by setting a global key for your navigation:

final GlobalKey<NavigatorState> navigatorKey = GlobalKey<NavigatorState>();

Pass it to MaterialApp:

    MaterialApp(
      title: 'MyApp',
      onGenerateRoute: generateRoute,
      navigatorKey: navigatorKey,
    );

Push routes:

navigatorKey.currentState.pushNamed('/someRoute');

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