No Provider for NavController

Ionic Framework ionic-v3
1

Hi Friends i want to navigate to home page inside this provider. How can i achieve this ?
below is the code i am using.

import { NavController, LoadingController} from ‘ionic-angular’;

@Injectable()
export class DataFactory {
url: any;
token: any;
constructor(
public _navCtrl: NavController,
private _http: Http
) {
this._navCtrl.push(HomePage);
}

this is showing an error “no provider for NavController”.

2

The way I ended up doing this, after being advised to do so, was setting up an observable in the provider and have the app component subscribe to it, waiting for the redirects.

3

Thanks for Replying. can you please share the code

4

Something along the lines of this

import { Observable } from 'rxjs/Observable';

@Injectable()
export class DataFactory {
	private observable;
	private observer;
	url: any;
	token: any;

	constructor(
		public _navCtrl: NavController,
		private _http: Http
	) {
		this.observer.next({navigateTo: "HomePage"});
	}

	navigation(): Observable<any> {
		if(!this.observable) {
			this.observable = new Observable(observer => {
				this.observer = observer;
			});
		}
		return this.observable;
	}
}

And in your app component

private components = {
	"HomePage": HomePageComponent
};

constructor() {
	this.dataFactory.navigation().subscribe(
		data => {
			this.navCtrl.push(this.components[data.navigateTo]);
		}
	);
}