如何使future.wait响应扑朔迷离？

Question

如何使未来动荡。等待响应？？？我已经进行了投射，但仍然无法正常工作。

错误：

[VERBOSE-2:ui_dart_state.cc(157)] Unhandled Exception: type 'Future<List<Map<String, dynamic>>>' is not a subtype of type 'List<Map<String, dynamic>>' in type cast

代码：

Future<void> addNewTask(User data, [BuildContext context]) async {

    Future<List<Map<String, dynamic>>> responses = Future.wait([
      Database.addUser(uid, data.toMap()),
      Database.addSetting(uid, data.toMap())
    ]);

     List<Map<String, dynamic>> firstResponse = responses as List<Map<String, dynamic>>;
}

Answer 1

这是正确的答案。在future.await前面添加了一个等待，并从List<Map<String, dynamic>>删除了未来

Future<void> addNewTask(User data, [BuildContext context]) async {

    List<Map<String, dynamic>> responses = await Future.wait([
      Database.addUser(uid, data.toMap()),
      Database.addSetting(uid, data.toMap())
    ]);
}