build method Null safety
- dynamic context
Implementation
@override
Widget build(BuildContext context) {
// [_startLiveFeed] is called both with [onResume] and [onPause] to cover
// all entry points
return LifeCycleManager(
onStart: _startLiveFeed,
onResume: _onResumeImageStream,
onVisible: () => _onResumeImageStream(forceStartPreview: true),
onPause: _onPauseImageStream,
onInvisible: _onPauseImageStream,
child: _buildScannerWidget(),
);
}