flutter - 我正在尝试将这些代码行转换为不可为空的语句

Question

MyApp 类扩展 StatelessWidget {

@override Widget build(BuildContext context) { final _init = Firebase.initializeApp(); return FutureBuilder(future: _init, builder: (context, snapshot){ if (snapshot.hasError) { return ErrorWidget(); } else if (snapshot.hasData) { return MaterialApp(

标签： flutter