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.ts

import { 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: AlertController

public 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.ts

import { 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。