Javascript 如何在登录爱奥尼亚3后更新侧边栏,而无需重新打开应用程序或在浏览器中刷新?
我在我的ionic 3应用程序中创建了一个登录和注册功能,它也可以正常工作,但登录后的用户名在侧栏中没有立即更新意味着我需要刷新浏览器,或者在侧栏中显示此用户名后,我必须关闭应用程序并重新打开应用程序。但是我想在登录后显示username instanlty,用于刷新我在登录后添加的加载程序页面,但不起作用。我在ionic 3中查看了事件api,但没有了解如何使用。请帮忙。下面是我的login.ts、app.component.ts和app.html login.tsJavascript 如何在登录爱奥尼亚3后更新侧边栏,而无需重新打开应用程序或在浏览器中刷新?,javascript,angular,ionic-framework,ionic2,ionic3,Javascript,Angular,Ionic Framework,Ionic2,Ionic3,我在我的ionic 3应用程序中创建了一个登录和注册功能,它也可以正常工作,但登录后的用户名在侧栏中没有立即更新意味着我需要刷新浏览器,或者在侧栏中显示此用户名后,我必须关闭应用程序并重新打开应用程序。但是我想在登录后显示username instanlty,用于刷新我在登录后添加的加载程序页面,但不起作用。我在ionic 3中查看了事件api,但没有了解如何使用。请帮忙。下面是我的login.ts、app.component.ts和app.html login.ts import { Comp
import { Component } from '@angular/core';
import { IonicPage,Events, NavController, LoadingController NavParams,ToastController } from 'ionic-angular';
import { SignupPage } from '../signup/signup';
//import { HomePage } from '../home/home';
import {
AuthServiceProvider
} from "../../providers/auth-service/auth-service";
/**
* 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 {
loading:any;
responseData : any;
userData = {"user":"","password":""};
constructor(public loadingCtrl: LoadingController,public events: Events,private toastCtrl: ToastController,public navCtrl: NavController, public navParams: NavParams,public authService:AuthServiceProvider) {
//this.title = this.navParams.get('title');
}
login(){
var userMe = '';
for(var key in this.userData) {
if(key) {
userMe = userMe + key + '=' + this.userData[key] + '&';
}
// console.log(this.userData[key]);
}
this.authService.postData(userMe,'user/login').then((result) => {
this.responseData = result;
//console.log(this.responseData);
if(this.responseData.status == 1){
this.loading = this.loadingCtrl.create({
content: 'Waiting...'
});
this.loading.present();
//console.log(this.responseData);
localStorage.setItem('userStorage', JSON.stringify(this.responseData));
this.navCtrl.popToRoot();
this.loading.dismiss();
///this.navCtrl.push(TabsPage);
}
else{
let toast = this.toastCtrl.create({
message: this.responseData.message,
duration: 3000,
position: 'bottom'
});
toast.onDidDismiss(() => {
console.log('Dismissed toast');
});
toast.present();
}
}, (err) => {
// Error log
});
}
pushSignup(){
this.navCtrl.push(SignupPage);
}
/* pushHome(){
this.navCtrl.push(HomePage);
}*/
ionViewDidLoad() {
console.log('ionViewDidLoad LoginPage');
}
}
app.component.ts
// Angular
import { Component, ViewChild } from '@angular/core';
// RxJS
import { ReplaySubject } from "rxjs/ReplaySubject";
//import { ArrayObservable } from "rxjs/observable/ArrayObservable";
// Ionic
import { Nav,Events, Platform,NavController,LoadingController, MenuController } from 'ionic-angular';
import { AuthServiceProvider } from '../providers/auth-service/auth-service';
// Ionic Native
import { StatusBar } from '@ionic-native/status-bar';
import { SplashScreen } from '@ionic-native/splash-screen';
// Pages
import { HomePage } from '../pages/home/home';
import { LoginPage } from '../pages/login/login';
// Side Menu Component
@Component({
templateUrl: 'app.html'
})
export class MyApp {
@ViewChild('myNav') nav: NavController
// Get the instance to call the public methods
public rootPage: any = HomePage;
loading: any;
userStorage: any;
hideMe:any;
showMe = false;
showButton : any=false;
// Options to show in the SideMenuComponent
private unreadCountObservable: any = new ReplaySubject<number>(0);
constructor(public authService:AuthServiceProvider ,
private platform: Platform,
private statusBar: StatusBar,
private splashScreen: SplashScreen,
private event: Events,
private menuCtrl: MenuController,
public loadingCtrl: LoadingController) {
this.initializeApp();
this.profileName();
}
initializeApp() {
this.platform.ready().then(() => {
this.statusBar.styleLightContent();
this.splashScreen.hide();
});
// Change the value for the batch every 5 seconds
setInterval(() => {
this.unreadCountObservable.next(Math.floor(Math.random() * 10));
}, 5000);
}
openMenu() {
this.menuCtrl.open();
}
closeMenu() {
this.menuCtrl.close();
}
toggleMenu() {
this.menuCtrl.toggle();
}
login(){
this.nav.push(LoginPage);
}
logout() {
this.loading = this.loadingCtrl.create({
content: 'Waiting...'
});
this.loading.present();
localStorage.clear();
this.showMe = false;
this.loading.dismiss();
}
profileName(){
if (this.userStorage = JSON.parse(localStorage.getItem('userStorage'))) {
this.showMe = true;
this.showButton = true;
}
else{
this.showMe = false;
}
}
}
//角度
从“@angular/core”导入{Component,ViewChild};
//RxJS
从“rxjs/ReplaySubject”导入{ReplaySubject};
//从“rxjs/observable/ArrayObservable”导入{ArrayObservable};
//离子的
从“ionic angular”导入{Nav、事件、平台、NavController、LoadingController、MenuController};
从“../providers/auth service/auth service”导入{AuthServiceProvider};
//离子原生
从'@ionic native/status bar'导入{StatusBar};
从'@ionic native/SplashScreen'导入{SplashScreen};
//页数
从“../pages/home/home”导入{HomePage};
从“../pages/login/login”导入{LoginPage};
//侧菜单组件
@组成部分({
templateUrl:'app.html'
})
导出类MyApp{
@ViewChild('myNav')导航:导航控制器
//获取实例以调用公共方法
公共根页面:any=主页;
装载:任何;
用户存储:任何;
希德姆:任何;
showMe=假;
showButton:any=false;
//要在SideMenuComponent中显示的选项
private unreadcountable:any=新的ReplaySubject(0);
构造函数(公共authService:AuthServiceProvider,
私有平台:平台,
私有状态栏:状态栏,
私人splashScreen:splashScreen,
私人活动:活动,
private menuCtrl:MenuController,
公共加载(Ctrl:LoadingController){
这是.initializeApp();
this.profileName();
}
初始化EAPP(){
this.platform.ready()。然后(()=>{
this.statusBar.styleLightContent();
这个.splashScreen.hide();
});
//每5秒更改批次的值
设置间隔(()=>{
this.unreadcannotobservable.next(Math.floor(Math.random()*10));
}, 5000);
}
openMenu(){
this.menuCtrl.open();
}
关闭菜单(){
this.menuCtrl.close();
}
切换菜单(){
this.menuCtrl.toggle();
}
登录(){
本导航推送(登录页面);
}
注销(){
this.loading=this.loadingCtrl.create({
内容:“等待…”
});
this.loading.present();
localStorage.clear();
this.showMe=false;
this.loading.disclose();
}
profileName(){
if(this.userStorage=JSON.parse(localStorage.getItem('userStorage')){
this.showMe=true;
this.showButton=true;
}
否则{
this.showMe=false;
}
}
}
侧边栏的app.html
<ion-menu [content]="myNav">
<ion-content>
<div class="item item-avatar" style="padding: 25px;border-bottom: 1px solid #ccc;">
<img src="//ionicframework.com/img/docs/spengler.jpg">
<h5 *ngIf="showMe == true" class="after-login">{{userStorage.data.surname}}</h5>
<!-- <h6 *ngIf="showMe == true" class="before-login">Please Login.</h6> -->
<!-- <p>Nine Inch Nails</p> -->
</div>
<ion-item *ngIf="showMe == false" menuClose detail-none (click)="login()">Login</ion-item>
<ion-item menuClose detail-none (click)="">My Business</ion-item>
<ion-item menuClose detail-none (click)="">Package</ion-item>
<ion-item menuClose detail-none (click)="">Wallet</ion-item>
<ion-item menuClose detail-none (click)="">Invite Friends</ion-item>
<ion-item menuClose detail-none (click)="">Profile</ion-item>
<ion-item menuClose detail-none (click)=""> FAQ</ion-item>
<ion-item *ngIf="showMe == true" menuClose detail-none (click)="logout()">Logout</ion-item>
</ion-content>
</ion-menu>
<ion-nav #myNav [root]="rootPage"></ion-nav>
{{userStorage.data.name}
登录
我的生意
包裹
钱包
邀请朋友
轮廓
常见问题
注销
您可以使用
Events是一个发布-订阅样式的事件系统,用于发送和
响应应用程序中的应用程序级事件
在一个组件中,您向events.publish()
提供数据,然后在另一个组件中,您通过events.subscribe()
访问该数据。在上面的示例中,数据是用户
和时间
就你而言
this._events.publish('user:signedIn',
this.userData =
localStorage.setItem('userStorage', JSON.stringify(this.responseData)
);
然后
_events.subscribe('user:signedIn', (userEventData) => {
this.userData = localStorage.getItem('userStorage');
});
我不知道如何在我的代码中使用它。我已经对你的这篇文章发表了评论,想知道如何使用它。请你帮我写代码好吗?
_events.subscribe('user:signedIn', (userEventData) => {
this.userData = localStorage.getItem('userStorage');
});