我有一个班级可以使用 hive,我想收到一个我正在使用的 api 列表,但是当我打电话给我的班级获得一个列表时,它给了我这个错误
class PersistStorage {
sendData(List<Movie> movie) async {
var box = await Hive.openBox('data');
box.put("movies", movie);
}
}
FutureBuilder 我称之为我的班级:
class GridViewMovies extends StatefulWidget {
double _crossAxisSpacing = 15, _mainAxisSpacing = 12, _aspectRatio = 1;
PersistStorage storage;
GridViewMovies({Key key}) : super(key: key);
@override
_GridViewMoviesState createState() => _GridViewMoviesState();
}
class _GridViewMoviesState extends State<GridViewMovies> {
BlocMovies movieBloc;
@override
Widget build(BuildContext context) {
movieBloc = BlocProvider.of(context);
return FutureBuilder(
future: movieBloc.getlistMovies(),
builder: (BuildContext context, AsyncSnapshot<MoviesModel> snapshot) {
switch (snapshot.connectionState) {
case ConnectionState.waiting:
return Center(
child: CircularProgressIndicator(),
);
break;
case ConnectionState.none:
return Center(
child: CircularProgressIndicator(),
);
break;
case ConnectionState.done:
if (snapshot.data == null) {
return Center(child: Text("Intenta mas tarde"));
}
//here call my function .......................
widget.storage.sendData(snapshot.data.items);
return Center(
child: movieList(context, snapshot.data.items),
);
break;
case ConnectionState.active:
if (snapshot.data == null) {
return Center(child: Text("Intenta mas tarde"));
}
return Center(
child: movieList(context, snapshot.data.items),
);
break;
default:
}
});
}
并且因为该类仅服务于我调用我的函数但给我带来了那个错误,有什么想法可以解决这个问题吗?