didChangeAppLifecycleState method

@override void didChangeAppLifecycleState(AppLifecycleState state)

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

An example of implementing this method is provided in the class-level documentation for the WidgetsBindingObserver class.

This method exposes notifications from SystemChannels.lifecycle.

See also:

• AppLifecycleListener, an alternative API for responding to application lifecycle changes.

Implementation

@override
void didChangeAppLifecycleState(AppLifecycleState state) {
  // Tạm dừng web content khi app ở background để tiết kiệm RAM
  if (_controller != null && !_isDisposed) {
    switch (state) {
      case AppLifecycleState.paused:
      case AppLifecycleState.inactive:
        // WebView tự động pause khi app không active
        break;
      case AppLifecycleState.resumed:
        // WebView tự động resume
        break;
      case AppLifecycleState.detached:
      case AppLifecycleState.hidden:
        break;
    }
  }
}