Question

几个月前，我写了这个Fire Auth函数，但是今天尝试时，它返回了以下错误：

错误TypeError：无法读取null的属性'uid'

我似乎无法弄清楚哪里出了问题，因为我没有更改任何代码。

根据Firebase控制台，用户已成功登录。

代码：

login.ts，后跟login.html

import { Component } from '@angular/core';
import { IonicPage, NavController, ToastController, NavParams } from 'ionic-angular';

//Firebase imports
import { AngularFireAuth } from 'angularfire2/auth';

//Model import
import { User } from '../../models/user.interface';

//Page import 
import { HomePage } from '../home/home';

@IonicPage()
@Component({
  selector: 'page-login',
  templateUrl: 'login.html',
})
export class LoginPage {

  oldUser = {} as User;

  constructor(
    private afAuth: AngularFireAuth,
    public navCtrl: NavController, 
    public navParams: NavParams,
    private toast: ToastController) {
  }

  async login(oldUser: User) {
    try {
      const result = this.afAuth.auth.signInWithEmailAndPassword(oldUser.email, oldUser.password);
      if (result) {
        this.navCtrl.setRoot(HomePage);
        this.toast.create({
          message: `We're all given the same hours in a day. Are you ready to maximise yours?`,
          duration: 3000
        }).present();
      } 
    }
    catch(e) {
      this.toast.create({
        message:   `Let's try again: ` + `${e}`.substr(7),
        duration: 2000
      }).present();
    }
  }
}

    <div class="list">
      <ion-item>
        <ion-input class="title" type="email" placeholder="Email Address" [(ngModel)]="oldUser.email"></ion-input>
      </ion-item>
    
      <ion-item>
        <ion-input class="title" placeholder="Password" clear-input type="password" [(ngModel)]="oldUser.password"></ion-input>
      </ion-item>
    </div>
    
    <button ion-button (click)="login(oldUser)">LOGIN</button>

请帮助！！谢谢！

Answer 1

u需要检查用户是否存在1，然后执行yourlogic

 let user = this.fireAuth.auth.currentUser;
    if (user != null) {
      currentUser.id = user.uid;
      currentUser.email = user.email;
      // login logic ...
    }

更多信息here

为什么我的Firebase身份验证功能不再起作用？

1 个答案: