build method

  1. @override
FutureOr<AppLifecycleState> build()

Initialize an AsyncNotifier.

It is safe to use Ref.watch or Ref.listen inside this method.

If a dependency of this AsyncNotifier (when using Ref.watch) changes, then build will be re-executed. On the other hand, the AsyncNotifier will not be recreated. Its instance will be preserved between executions of build.

If this method throws or returns a future that fails, the error will be caught and an AsyncError will be emitted.

Implementation

@override
FutureOr<AppLifecycleState> build() {
  final binding = WidgetsBinding.instance..addObserver(this);
  ref.onDispose(() => binding.removeObserver(this));
  return future;
}