当转换documentSnapshot.data() as DocumentSnapshot<Map<String, dynamic>>时,我得到了错误:_InternalLinkedHashMap<String, dynamic>' is not a subtype of type 'DocumentSnapshot<Map<String, dynamic>>' in type cast
我使用<
我是flutter的初学者。我在获取JSON响应时遇到如下错误。Map<String, dynamic> map = json.decode(response.body);print(data这是我的代码。type '_InternalLinkedHashMap<String, dynamic>' is not a su
主文件中的路由: class MyApp extends StatelessWidget { Widget build(BuildContext context) {'/search'); ], drawer: AppDrawer(), }
} 错误: type '(String) => dynamic' is not a subtype of type