detachedAppLifecycleState method

@override void detachedAppLifecycleState()

Either be in the progress of attaching when the engine is first initializing or after the view being destroyed due to a Navigator pop. The application is still hosted on a flutter engine but is detached from any host views. Its firing will depending on the hosting operating system: https://github.com/flutter/flutter/issues/124945#issuecomment-1514159238

Implementation

@override
void detachedAppLifecycleState() {
  // Don't call dispose() if in testing
  if (inWidgetsFlutterBinding) {
    if (!_disposed) {
      dispose();
    }
    //
    try {
      // runZonedGuarded<void>(() {
      super.detachedAppLifecycleState();
    } catch (e) {
      // }, (error, stackTrace) {
      // Record error in device's log
      _logPackageError(
        e,
        library: 'part01_statex.dart',
        description: 'Error in detachedAppLifecycleState()',
      );
      // });
    }
  }
}