Page has a @IonicPage decorator, but it does not have a corresponding “NgModule”

Question

I was working on page navigation in Ionic. After using ionic serve, I got this error:

The Page with .ts extension has a @IonicPage decorator, but

Answer 1

If you want to use deep linking first read the API doc

and now let look at an example for adding a page with deep linking:

This is our src folder structure :

-src
 --app
 --assets
 --pages
    --home
       *home.html
       *home.scss
       *home.ts
 --thems
 *some file we not working with them in here

for adding a page use this command in your app folder :

$ ionic g page show 

show is page name. and now this is our src folder structure :

-src
 --app
 --assets
 --pages
    --home
       *home.html
       *home.scss
       *home.ts
    --show
       *show.html
       *show.scss
       *show.ts
 --thems
 *some file we not working with them in here

If now you run your app with below command in your app folder:

$ ionic serve

you get error like this :

/path/to/app/src/pages/show/show.ts has a @IonicPage decorator, but it does not have a corresponding "NgModule" at /path/to/app/src/pages/show/show.module.ts

now you should make file named show.module.ts (in error it says) in show folder then our src folder structure should be like this :

-src
     --app
     --assets
     --pages
        --home
           *home.html
           *home.scss
           *home.ts
        --show
           *show.html
           *show.scss
           *show.ts
           *show.module.ts
     --thems
     *some file we not working with them in here

and this is the content of show.module.ts file :

import { NgModule } from '@angular/core';
import {IonicPageModule} from 'ionic-angular';

import { ShowPage } from './show';

@NgModule({
  declarations: [
    ShowPage
  ],
  imports: [
    IonicPageModule.forChild(ShowPage)
  ],
  entryComponents: [
    ShowPage
  ]
})
export class ShowPageModule {}

Done. run your app with ionic serve and the error is gone.

You can navigate to your new page with

goToMyPage() {
    // go to the ShowPage component
    this.navCtrl.push('ShowPage');
  }

see doc for navigation.