Issue in navigating HomePage due to lack of NavController Provider

Trying to figure out how to open ListPage from a button within the Google Maps marker.

https://i.sstatic.net/okXj5.png

1)

import { NavController, NavParams } from 'ionic-angular';

2)

constructor(public connectivityService: Connectivity, public navCtrl: NavController) {

      }

3)

infowindow.setContent('<button style="font-size: 1.5em; color: red; font-weight: bold;" ion-button (click)="showlistPage()">ADD BLOOD</button>' + "</br>" + results[1].formatted_address+'<p style="color: red;">'+distanceToYou+" miles from your location</p>");

5)

  showlistPage() {
    this.navCtrl.push(ListPage);
}

Currently facing an error stating: homepage caused by no provider for navcontroller

https://i.sstatic.net/vmrzP.png

google-mapstypescriptionic-frameworkionic2

Answer №1

Make sure to add the Connectivity service in your app.module as a provider, and make sure to also import it into your component

Answer №2

To include the necessary modules in our app, we import NavController and NavParams from 'ionic-angular' in the app.module.ts file.

Ensure to add the following code snippet at the bottom of the app.module.ts file:

providers: [NavController, {provide: ErrorHandler, useClass: IonicErrorHandler}]

Answer №3

Although it goes against best practices, I attempted to navigate to a page from a service (specifically Google Maps in this case)

import {NavController, App} from "ionic-angular";
.....

@Injectable()
 export class GoogleMaps {

private nav:NavController;

.....

constructor(public connectivityService: Connectivity, private app:App) {

 this.nav = app.getActiveNav();

}

.....

//Within my Google Maps Marker, I included the button

infowindow.setContent('<button style="font-size: 1.5em; color: red; font-weight: bold;" ion-button (click)="showlistPage()">ADD BLOOD</button>' + "</br>" + results[1].formatted_address+'<p style="color: red;">'+distanceToYou+" miles from your location</p>");

.....


showlistPage() {
  this.nav.push(ListPage);
}

Despite still encountering difficulties accessing the ListPage through that button, I managed to resolve the error.

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