我正在Ionic上开发一个项目，登录后，我确实设置了app.component.ts中使用的storage（'id'）来获取用户详细信息，但是当我运行代码时，它不起作用，但是当我重新加载整个页面（Ctrl + R）时，它就会起作用。
这是我的代码。
login.ts：
import {Component} from "@angular/core";
import {NavController, AlertController, ToastController, MenuController} from "ionic-angular";
import {HomePage} from "../home/home";
import {RegisterPage} from "../register/register";
import { ServicesProvider } from '../../providers/services/services';
import { Storage } from '@ionic/storage';
@Component({
selector: 'page-login',
templateUrl: 'login.html'
})
export class LoginPage {
private user = {
email: '',
password: ''
}
private setputt:string;
constructor(public navCtrl: NavController,
public forgotCtrl: AlertController,
public menu: MenuController,
public toastCtrl: ToastController,
private storage: Storage,
public ServicesProvider: ServicesProvider
) {
this.menu.swipeEnable(false);
}
register() {
this.navCtrl.setRoot(RegisterPage);
}
login(user){
this.ServicesProvider.loginpost(user).subscribe(
data => {
if(data.success){
this.setputt = data.message;
if(this.setputt == 'Login Successfull'){
this.storage.set('id', data.id);
this.navCtrl.setRoot(HomePage);
}
}
else{
this.setputt = data.message;
}
},
error => {
console.log(error);
}
)
}
// set a key/value
// storage.set('name', 'Max');
// // Or to get a key/value pair
// storage.get('age').then((val) => {
// console.log('Your age is', val);
// });
// storage.remove('name');
forgotPass() {
let forgot = this.forgotCtrl.create({
title: 'Forgot Password?',
message: "Enter you email address to send a reset link password.",
inputs: [
{
name: 'email',
placeholder: 'Email',
type: 'email'
},
],
buttons: [
{
text: 'Cancel',
handler: data => {
console.log('Cancel clicked');
}
},
{
text: 'Send',
handler: data => {
console.log('Send clicked');
let toast = this.toastCtrl.create({
message: 'Email was sended successfully',
duration: 3000,
position: 'top',
cssClass: 'dark-trans',
closeButtonText: 'OK',
showCloseButton: true
});
toast.present();
}
}
]
});
forgot.present();
}
}
app.component.ts：
import { Component, ViewChild } from '@angular/core';
import { Platform, Nav } from 'ionic-angular';
import { StatusBar } from '@ionic-native/status-bar';
import { SplashScreen } from '@ionic-native/splash-screen';
import { Storage } from '@ionic/storage';
import { ServicesProvider } from '../providers/services/services';
import { HomePage } from '../pages/home/home';
import {LoginPage} from "../pages/login/login";
import {ProfilePage} from "../pages/profile/profile";
import {FriendsPage} from "../pages/friends/friends";
import {YearbooksPage} from "../pages/yearbooks/yearbooks";
import {ChatPage} from "../pages/chat/chat";
import {FilesPage} from "../pages/files/files";
import {CheckLoginPage} from "../pages/check-login/check-login";
export interface MenuItem {
title: string;
component: any;
icon: string;
}
@Component({
templateUrl: 'app.html'
})
export class MyApp {
@ViewChild(Nav) nav: Nav;
rootPage: any = CheckLoginPage;
appMenuItems: Array<MenuItem>;
public FullNamer;
public pixr;
public id:number;
constructor(
platform: Platform,
statusBar: StatusBar,
splashScreen: SplashScreen,
public storage: Storage,
public ServicesProvider: ServicesProvider
) {
platform.ready().then(() => {
statusBar.styleDefault();
splashScreen.hide();
});
this.storage.get('id').then((vals) => {
if (vals != null) {
this.ServicesProvider.getDetails(vals).subscribe(data=>{
// console.log(data);
this.pixr = this.ServicesProvider.theurl+data.pix;
this.FullNamer = data.fullname;
});
}
});
this.appMenuItems = [
{title: 'Home', component: HomePage, icon: 'home'},
{title: 'Files', component: FilesPage, icon: 'ios-folder'},
{title: 'Friends', component: FriendsPage, icon: 'ios-people'},
{title: 'Yearbooks', component: YearbooksPage, icon: 'ios-book'},
{title: 'Chat', component: ChatPage, icon: 'md-chatbubbles'}
];
}
ionViewCanEnter(){
}
openPage(page) {
this.nav.setRoot(page.component);
}
GoPages(){
this.nav.setRoot(ProfilePage);
}
logout() {
this.storage.remove('id');
this.storage.remove('FullName');
this.nav.setRoot(LoginPage);
}
}
app.html
<ion-menu side="left" id="authenticated" [content]="content">
<ion-header>
<ion-toolbar class="user-profile">
<ion-grid>
<ion-row>
<ion-col col-4>
<div class="user-avatar">
<img [src]="pixr">
</div>
</ion-col>
<ion-col padding-top col-8>
<h2 ion-text class="no-margin bold text-white">
{{FullNamer}}
</h2>
<span ion-text color="light">Customer</span>
</ion-col>
</ion-row>
<ion-row no-padding class="other-data">
<ion-col no-padding class="column">
<button ion-button icon-left small full class="round" color="light" menuClose (click)="GoPages()">
<ion-icon name="ios-person"></ion-icon>
Edit Profile
</button>
</ion-col>
<ion-col no-padding class="column">
<button ion-button icon-left class="round" small full color="light" menuClose (click)="logout()">
<ion-icon name="log-out"></ion-icon>
Log Out
</button>
</ion-col>
</ion-row>
</ion-grid>
</ion-toolbar>
</ion-header>
<ion-content color="primary">
<ion-list class="user-list">
<button ion-item menuClose class="text-1x" *ngFor="let menuItem of appMenuItems" (click)="openPage(menuItem)">
<ion-icon item-left [name]="menuItem.icon" color="primary"></ion-icon>
<span ion-text color="primary">{{menuItem.title}}</span>
</button>
</ion-list>
</ion-content>
</ion-menu>
<ion-nav [root]="rootPage" #content swipeBackEnabled="false"></ion-nav>
service.ts：
import { HttpClient } from '@angular/common/http';
import { Injectable } from '@angular/core';
import { Storage } from '@ionic/storage';
@Injectable()
export class ServicesProvider {
public theurl = 'http://localhost/HoleeSheet/php/';
public tittle = 'Holee Sheet';
public id:number;
constructor(public http: HttpClient, private storage: Storage) {
this.storage.get('id').then((valr) => {
if (valr != null) {
this.id = valr;
}
});
}
loginpost(user){
return this.http.put<obbbbs>(this.theurl+'login.php', {
email: user.email,
password: user.password
});
}
getDetails(humid){
console.log(humid);
return this.http.post<details>(this.theurl+'getDetails.php', {
id: humid
});
}
}
interface details{
'fullname': string,
'pix':string
}
interface obbbbs {
'success': 'boolean',
'message': 'string',
'id': 'string'
}
我该如何解决这个问题？
答案 0 :(得分：0)
欢迎堆栈溢出。
// LoginPage.login method (login.ts)
this.storage.set('id', data.id);
this.navCtrl.setRoot(HomePage);
在将值保存到存储之前，您正在导航到主页。您应等待this.storage.set返回的诺言得到解决，然后才能继续导航：
// LoginPage.login method (login.ts)
this.storage.set('id', data.id)
.then(() => this.navCtrl.setRoot(HomePage));