错误：无法解析 LoginPage 的所有参数：

Question

我面临下一个错误，无法理解如何解决它。错误：无法解析 LoginPage 的所有参数：（[对象对象]、[对象对象]、[对象对象]、？）。我已经检查了这里的几乎每个主题，并尝试了多种方法来解决它，但仍然无法在第二天击败它。Login.tsimport { Component } from '@angular/core';import { IonicPage, NavController, NavParams,AlertController } from 'ionic-angular';   import { AuthProvider } from '../../providers/auth/auth';import { TabsPage } from '../tabs/tabs';/*** Generated class for the LoginPage page.** See https://ionicframework.com/docs/components/#navigation for more info on* Ionic pages and navigation.*/@IonicPage()@Component({selector: 'page-login',templateUrl: 'login.html',})export class LoginPage {email:string = '';password:string = '';errorMsg:string;constructor(public navParams: NavParams,public navCtrl: NavController,public alertCtrl: AlertControllerpublic authService: AuthProvider,) {}ionViewDidLoad() {console.log('ionViewDidLoad LoginPage');}errorFunc(message){let alert = this.alertCtrl.create({  title: 'oops!',  subTitle: message,  buttons: ['OK']});alert.present();} myLogIn(){if (this.email.trim() !==''    ) {  console.log(this.email.trim() + "   " + this.password.trim() )  if (this.password.trim()  === '') {    this.errorFunc('Please put your password')  }  else{    let credentials = {      email: this.email,        password: this.password    };     this.authService.login(credentials).then((result) => {        console.log(result);        this.navCtrl.setRoot(TabsPage);    }, (err) => {        console.log(err);        this. errorFunc('Wrong credentials ! try again')        console.log("credentials: "+JSON.stringify(credentials))    });  }  }  else{  this. errorFunc('Please put a vaild password !  for ex:(123456)')  }  }  myLogOut(){  this.authService.logout();  }  }Auth.tsimport { Injectable } from '@angular/core';import { Storage } from '@ionic/storage'; import { Http , Headers } from '@angular/http';import { TabsPage } from '../../pages/tabs/tabs';

Answer 1

你似乎有一个经典的循环引用。您在两个和“”中都导入了“TabsPage”。Auth.tsLoginPage.ts

经典的循环引用。

尝试从 Auth.ts 中删除 TabsPage。通常，最好让组件执行非常具体的事情，以便获得粒度代码并避免此类循环引用问题。