ionic-framework - 选项卡数据未在 ionic 4 中加载动态数据
问题描述
嗨,我对 Ionic 很陌生,我正在使用选项卡实现 Ionic 应用程序。在我的应用程序中有三个选项卡,每个选项卡都包含每个组件并带来动态数据(Rest API 调用)。
但是只有第一次它在下次单击选项卡数据时才获取数据没有更新(Rest API 调用没有调用),因为我写入了ngOninIt()
Method。
下面是我的代码:
tabs.html 代码:
<ion-tabs>
<ion-tab label="Home" icon="home" href="/tabs/(home:home)">
<ion-router-outlet name="home"></ion-router-outlet>
</ion-tab>
<ion-tab label="About" icon="information-circle" href="/tabs/(about:about)">
<ion-router-outlet name="about"></ion-router-outlet>
</ion-tab>
<ion-tab label="Contact" icon="contacts" href="/tabs/(contact:contact)">
<ion-router-outlet name="contact"></ion-router-outlet>
</ion-tab>
</ion-tabs>
tabs.routing.ts
const routes: Routes = [
{
path: 'tabs',
component: TabsPageComponent,
children: [
{
path: 'mustang',
outlet: 'tab1',
loadChildren: './mustang/mustang.module#MustangModule'
},
{
path: 'camaro',
outlet: 'tab2',
loadChildren: './camaro/camaro.module#CamaroModule'
},
{
path: 'charger',
outlet: 'tab3',
loadChildren: './charger/charger.module#ChargerModule'
}
]
},
{
path: '',
redirectTo: '/lazy-load-tabs/tabs/(tab1:mustang)'
}
]
;
home.module.ts
import { IonicModule } from '@ionic/angular';
import { RouterModule } from '@angular/router';
import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { HomePage } from './home.page';
@NgModule({
imports: [
IonicModule,
CommonModule,
FormsModule,
RouterModule.forChild([{ path: '', component: HomePage }])
],
declarations: [HomePage]
})
export class HomePageModule {}
主页.ts
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'app-home',
templateUrl: 'home.page.html',
styleUrls: ['home.page.scss']
})
export class HomePage implements OnInit {
constructor() { }
ngOnInit() {
alert("app home tabs is clickced...");
}
}
但是上面的警报方法只调用一次,我在哪里可以编写每次单击选项卡时应该调用的代码。
提前致谢 !!!!!
解决方案
您可以使用每次调用的另一个生命周期事件,例如ionViewWillEnter
有关更多详细信息,请参阅 https://ionicframework.com/docs/api/navigation/NavController/
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