Exploring the world of page jumps using Ionic3

I've created a tabs page with sections A, B, and C set up like this:

tab1Root: any = HomePage;
tab2Root: any = AboutPage;
tab3Root: any = ContactPage;

However, when I navigate from PageB to a new pageC, the URL changes to:

http://localhost:8102/#/about/shopping
; and upon reloading the shopping page, an error occurs:

The component AboutPage is not part of any NgModule or has not been imported into the module. As a newcomer, I am seeking assistance with my code; here is what I have in my files:

about.ts:

import { Component } from '';
import { IonicPage, NavController, NavParams } from 'ionic-angular';
@IonicPage()
@Component({
selector: 'page-about',
templateUrl: 'about.html',
})
export class AboutPage {
lists = Lists;
constructor(public navCtrl: NavController, public navParams: NavParams) {}
ionViewDidLoad() {}
openPage(page){
this.navCtrl.push(page);
}
}

about.module.ts

import { NgModule } from '';
import { IonicPageModule } from 'ionic-angular';
import { AboutPage } from './about';
@NgModule({
declarations: [
AboutPage,
],
imports: [
IonicPageModule.forChild(AboutPage),
],
})
export class AboutPageModule {}

Answer №1

Although I haven't had experience working with tab components, I encountered a similar error when creating a new page without adding it to the entryComponents section like this:

import { NgModule } from '';
import { IonicPageModule } from 'ionic-angular';
import { AboutPage } from './about';
@NgModule({
declarations: [
     AboutPage,
],
imports: [
     IonicPageModule.forChild(AboutPage),
],
entryComponents: [
     AboutPage,
]
})

If you include your new page in the entryComponent section, it should resolve the issue you are facing:

AboutPage is not part of any NgModule or the module has not been imported into your module

The documentation explains EntryCompmonents as follows:

This defines the components that should be compiled along with this component. Angular will create a ComponentFactory and store it in the ComponentFactoryResolver for each component listed here.

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