didChangeAppLifecycleState method
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) {
// App state changed before we got the chance to initialize.
if (_cameraController == null || !_cameraController!.value.isInitialized) {
return;
}
if (state == AppLifecycleState.inactive) {
_stop(true).then((value) => _cameraController?.dispose());
} else if (state == AppLifecycleState.resumed && _isStreaming) {
_initialize();
}
}