未处理的异常:在flutter googlesignin中,'Future‘类型不是' QuerySnapshot’类型的子类型使用firebase.Got problem : final QuerySnapshot/flutter_auth_buttons.dart';
import 'package:flutter_signin_button/flutter_signin_button.dart'
我在flutter中使用Firebase作为后端,在用户身份验证时抛出异常。每当我启动应用程序时,异常就会发生一次。 当我尝试注销时,异常发生了一次,但屏幕没有改变。D/FirebaseAuth(23343): Notifying auth state listeners about a sign-out event.Exception:
NoSuchMethodError: The getter 'uid' was called on null.=======================
我正在尝试在flutter中实现facebook signin,然而,firebase不能创建一个'uid‘。firebase不会自动创建uid吗?它返回: The getter 'uid' was called on null.Receiver: null
Tried calling: uid 以下是登录方法: Future<UserCredential> signInWithFacebook(BuildContext con