[英]Executing an observble only when a promise is resolved in angular2/ionic2
[英]Ionic2 uncaught promise
我目前正在学习Ionic2中围绕Angular2的绳索。 我正在阅读一个过时的教程,由于我不是100%熟悉Angular2环境,所以无法调试此错误:
Uncaught (in promise): Error: No component factory found for ReposPage. Did you add it to @NgModule.entryComponents? Error: No component factory found for ReposPage. Did you add it to @NgModule.entryComponents? at noComponentFactoryError
import { Component, ViewChild } from '@angular/core'; import { Platform, MenuController, Nav } from 'ionic-angular'; import { HelloIonicPage } from '../pages/hello-ionic/hello-ionic'; import { ListPage } from '../pages/list/list'; import { UsersPage } from '../pages/users/users'; import { ReposPage } from '../pages/repos/repos'; import { OrganisationsPage } from '../pages/organisations/organisations'; import { StatusBar } from '@ionic-native/status-bar'; import { SplashScreen } from '@ionic-native/splash-screen'; @Component({ templateUrl: 'app.html' }) export class MyApp { @ViewChild(Nav) nav: Nav; // make HelloIonicPage the root (or first) page rootPage = HelloIonicPage; pages: Array<{title: string, component: any}>; constructor( public platform: Platform, public menu: MenuController, public statusBar: StatusBar, public splashScreen: SplashScreen ) { this.initializeApp(); // set our app's pages this.pages = [ { title: 'Users', component: UsersPage }, { title: 'Repos', component: ReposPage }, { title: 'Organisations', component: OrganisationsPage }, { title: 'Hello Ionic', component: HelloIonicPage }, { title: 'My First List', component: ListPage } ]; } initializeApp() { this.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. this.statusBar.styleDefault(); this.splashScreen.hide(); }); } openPage(page) { // close the menu when clicking a link from the menu this.menu.close(); // navigate to the new page if it is not the current page this.nav.setRoot(page.component); } }
import { BrowserModule } from '@angular/platform-browser'; import { NgModule, ErrorHandler } from '@angular/core'; import { IonicApp, IonicModule, IonicErrorHandler } from 'ionic-angular'; import { MyApp } from './app.component'; import { HelloIonicPage } from '../pages/hello-ionic/hello-ionic'; import { ItemDetailsPage } from '../pages/item-details/item-details'; import { ListPage } from '../pages/list/list'; import { StatusBar } from '@ionic-native/status-bar'; import { SplashScreen } from '@ionic-native/splash-screen'; @NgModule({ declarations: [ MyApp, HelloIonicPage, ItemDetailsPage, ListPage ], imports: [ BrowserModule, IonicModule.forRoot(MyApp), ], bootstrap: [IonicApp], entryComponents: [ MyApp, HelloIonicPage, ItemDetailsPage, ListPage ], providers: [ StatusBar, SplashScreen, {provide: ErrorHandler, useClass: IonicErrorHandler} ] }) export class AppModule {}
我还通过ionic g page
命令创建了3页。
您需要包括ReposPage
在ngModule
在app.module.ts。 它应该同时存在于声明和entryComponents数组中。
@NgModule({
declarations: [
MyApp,
HelloIonicPage,
ItemDetailsPage,
ListPage,
ReposPage //here
],
imports: [
BrowserModule,
IonicModule.forRoot(MyApp),
],
bootstrap: [IonicApp],
entryComponents: [
MyApp,
HelloIonicPage,
ItemDetailsPage,
ListPage,
ReposPage //here
],
正如错误消息明确指出的那样,您需要将'ReposPage'添加到app.modules.ts文件中的entryComponents数组中。 另外,您需要将其添加为声明。
声明:[MyApp,HelloIonicPage,ItemDetailsPage,ListPage,ReposPage]
entryComponents:[MyApp,HelloIonicPage,ItemDetailsPage,ListPage,ReposPage]
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