didChangeAppLifecycleState method

@protected @override @mustCallSuper void didChangeAppLifecycleState(AppLifecycleState state)

Called when the system puts the app in the background or returns the app to the foreground.

Implementation

@protected
@override
@mustCallSuper
void didChangeAppLifecycleState(AppLifecycleState state) {
  /// No 'setState()' functions are allowed to fully function at this point.
  _rebuildAllowed = false;

  /// First, process the State object's own event functions.
  switch (state) {
    case AppLifecycleState.inactive:
      inactiveLifecycleState();
      break;
    case AppLifecycleState.paused:
      pausedLifecycleState();
      break;
    case AppLifecycleState.detached:
      detachedLifecycleState();
      break;
    case AppLifecycleState.resumed:
      resumedLifecycleState();
      break;
  }

  for (final listener in _beforeList) {
    listener.didChangeAppLifecycleState(state);
    switch (state) {
      case AppLifecycleState.inactive:
        listener.inactiveLifecycleState();
        break;
      case AppLifecycleState.paused:
        listener.pausedLifecycleState();
        break;
      case AppLifecycleState.detached:
        listener.detachedLifecycleState();
        break;
      case AppLifecycleState.resumed:
        listener.resumedLifecycleState();
        break;
    }
  }
  for (final con in _controllerList) {
    con.didChangeAppLifecycleState(state);
    switch (state) {
      case AppLifecycleState.inactive:
        con.inactiveLifecycleState();
        break;
      case AppLifecycleState.paused:
        con.pausedLifecycleState();
        break;
      case AppLifecycleState.detached:
        con.detachedLifecycleState();
        break;
      case AppLifecycleState.resumed:
        con.resumedLifecycleState();
        break;
    }
  }
  for (final listener in _afterList) {
    listener.didChangeAppLifecycleState(state);
    switch (state) {
      case AppLifecycleState.inactive:
        listener.inactiveLifecycleState();
        break;
      case AppLifecycleState.paused:
        listener.pausedLifecycleState();
        break;
      case AppLifecycleState.detached:
        listener.detachedLifecycleState();
        break;
      case AppLifecycleState.resumed:
        listener.resumedLifecycleState();
        break;
    }
  }
  _rebuildAllowed = true;
  if (_rebuildRequested || _inTester) {
    _rebuildRequested = false;

    /// Perform a 'rebuild' if requested.
    refresh();
  }
}