BackgroundGeolocation not installed error

@cathrinerathje wrote:

I’m creating an Ionic 4 app which should track users location while running - therefore it needs to work in the background.
I’ve implemented BackgroundGeolocation, following this tutorial: https://www.joshmorony.com/adding-background-geolocation-to-an-ionic-2-application/
and the official docs: https://ionicframework.com/docs/native/background-geolocation/

The code is compiling but when deployed and run on an Android device I get this error:

But I already installed the plugin - If I run the command it suggests, I get: “plugin already installed”.
If I run on chrome://inspect I can see it never enters the backgroundGeolocation configure method, since it enters the err block.

What could be the cause?

Imports:

ionic cordova plugin add cordova-plugin-mauron85-background-geolocation@alpha

npm install --save @ionic-native/background-geolocation@5.0.0-beta.21

Here is my code:

app.module.ts (remaining import statements omitted):

import { BackgroundGeolocation } from '@ionic-native/background-geolocation/ngx';
import { Geolocation } from '@ionic-native/geolocation/ngx';

@NgModule({
  declarations: [AppComponent, ViewInfoComponent],
  entryComponents: [ViewInfoComponent],
  imports: [BrowserModule, HttpClientModule, HttpModule, IonicModule.forRoot(), AppRoutingModule],
  providers: [
    StatusBar,
    SplashScreen,
    NavProviderService,
    SygicPlacesService,
    CurrentPositionService,
    BackgroundGeolocation,
    Geolocation,
    Geofence,
    TextToSpeech,
    InAppBrowser,
    BackgroundMode,
    { provide: RouteReuseStrategy, useClass: IonicRouteStrategy }
  ],
  bootstrap: [AppComponent]
})

in .ts file:

import { BackgroundGeolocation, BackgroundGeolocationConfig } from '@ionic-native/background-geolocation/ngx';
import { Geolocation } from '@ionic-native/geolocation/ngx';

constructor(public backgroundGeolocation: BackgroundGeolocation,
              private geolocation: Geolocation) {}

startTracking() {
      // Background tracking
      const config: BackgroundGeolocationConfig = {
        desiredAccuracy: 0,
        stationaryRadius: 10,
        distanceFilter: 10, 
        debug: true,
        interval: 2000,
        stopOnTerminate: true
      };

      this.backgroundGeolocation.configure(config).subscribe((location) => {
        console.log('BackgroundGeolocation: ' + location.latitude + ', ' + location.longitude);
  
        setTimeout(() => {
          this.trackedRoute.push({lat: location.latitude, lng: location.longitude});
          this.redrawPath(this.trackedRoute);
        }, 0);
  
      }, (err) => {
        console.log(err);
      });

      this.backgroundGeolocation.start();

      // Foreground tracking
      this.positionSubscription = this.geolocation.watchPosition({
        enableHighAccuracy: true
      })
      .pipe(
        filter((p) => p.coords != undefined)
      )
      .subscribe(position => {
        console.log(position);

        setTimeout(() => {
          this.trackedRoute.push({lat: position.coords.latitude, lng: position.coords.longitude});
          this.redrawPath(this.trackedRoute);
        }, 0);
      });
  }

stopTracking() {
    this.backgroundGeolocation.stop();
    this.positionSubscription.unsubscribe();
    console.log('tracking stopped');
}

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