Dart 什么用例有 FirebaseUser 的 reload() 功能

方法是什么.从用于的FirebaseUser重新加载()

从文档中:

公共任务重新加载() 手动刷新当前用户的数据(例如，附着的提供程序、显示名称等).

所以我最初认为在调用user.reload()之后，输出应该是:"name of user:bar"，而不是"name of user:foo".So for me it seems like it doesn't really do anything?个

Related side-question:
这也意味着我必须始终调用FirebaseAuth.instance.currentUser()以确保获得用户的最新信息？没有办法有一个FirebaseUser流，当用户信息更改时，它会发出一个新的FirebaseUser？(我指的不是Firebase.instance.onAuthStateChanged())

例子:

 static stackOverflowProblem() async {
    FirebaseUser user = await FirebaseAuth.instance.currentUser();
    print("Name of User: ${user.displayName}"); //prints foo

    //Renaming the name from "foo" to "bar"
    UserUpdateInfo userInfo = UserUpdateInfo();
    userInfo.displayName = "bar";
    await _auth.updateProfile(userInfo);

    print("\nBefore calling user.reload:");
    print("Name of user: ${user.displayName}"); //prints foo
    print("Name of FirebaseAuth.instance.currentUser: ${(await FirebaseAuth.instance.currentUser()).displayName}"); //prints bar

    await user.reload();

    print("\nAfter calling user.reload:");
    print("Name of user: ${user.displayName}"); //prints foo
    print("Name of FirebaseAuth.instance.currentUser: ${(await FirebaseAuth.instance.currentUser()).displayName}"); //prints bar
  }

控制台输出:

I/flutter (19989): Name of User: Foo
I/flutter (19989): 
I/flutter (19989): Before calling user.reload:
I/flutter (19989): Name of user: Foo
I/flutter (19989): Name of FirebaseAuth.instance.currentUser: bar
I/flutter (19989): 
I/flutter (19989): After calling user.reload:
I/flutter (19989): Name of user: Foo
I/flutter (19989): Name of FirebaseAuth.instance.currentUser: bar