如果用户已登录,我有一个关于导航到“选项卡”页面的问题。在最后一个代码块中,可以导航到LoginPage(如果firebase中没有用户),但是如果用户已登录,则如果应该定向到TabsPage,其中它给我一个错误:“未捕获(承诺):无效链接:TabsPage”。
*这是我的app.component.ts文件**
import { Component } from '@angular/core';
import { Platform } from 'ionic-angular';
import { StatusBar } from '@ionic-native/status-bar';
import { SplashScreen } from '@ionic-native/splash-screen';
import { LoginPage } from '../pages/login/login';
import { UserprofilePage } from '../pages/userprofile/userprofile';
import { TabsPage } from '../pages/tabs/tabs';
import firebase from 'firebase/app';
import 'firebase/auth';
import { FIREBASE_CONFIG } from './credentials';
@Component({
templateUrl: 'app.html'
})
export class MyApp {
rootPage:any;
constructor(platform: Platform, statusBar: StatusBar, splashScreen:
SplashScreen ) {
platform.ready().then(() => {
// Okay, so the platform is ready and our plugins are available.
// Here you can do any higher level native things you might need.
statusBar.styleDefault();
splashScreen.hide();
});
if (!firebase.apps.length) {
firebase.initializeApp(FIREBASE_CONFIG);
}
const unsubscribe = firebase.auth().onAuthStateChanged(user => {
if (!user) { //if user doesn't exist
this.rootPage = 'LoginPage';
unsubscribe();
} else { //if user is true, logged in
this.rootPage= 'TabsPage';
unsubscribe();
}
});
}
}
这是我的标签页。
import { Component } from '@angular/core';
import { NavController, NavParams } from 'ionic-angular';
import { AboutPage } from '../about/about';
import { ContactPage } from '../contact/contact';
import { HomePage } from '../home/home';
import {UserprofilePage} from '../userprofile/userprofile';
import { IonicPage } from 'ionic-angular';
@Component({
templateUrl: 'tabs.html'
})
export class TabsPage {
tab1Root = HomePage;
tab2Root = UserprofilePage;
tab3Root = ContactPage;
constructor() {
}
}
答案 0 :(得分:0)
您在app.component.ts中使用带有字符串的语法,就好像您的应用程序使用组件/页面的延迟加载一样。
但是基于您的导入(您正在导入组件的事实)意味着您正在使用非延迟加载方法。
通过分配组件而不是字符串来修复它:
const unsubscribe = firebase.auth().onAuthStateChanged(user => {
if (!user) { //if user doesn't exist
this.rootPage = LoginPage;
unsubscribe();
} else { //if user is true, logged in
this.rootPage= TabsPage;
unsubscribe();
}
});