MapView black screen but no errors in Android

Question

I am trying to display a location with a MapView but I can't get it to work. I have already look into all the other threads with the same questions but the solutions don't work for me.

Here is what is supposed to work but doesn't:

    public void displayMap(){
    final MapView mapView = findViewById(R.id.locationMapView);
    mapView.getMapAsync(new OnMapReadyCallback() {

        @Override
        public void onMapReady(GoogleMap googleMap) {
            LatLng coordinates = new LatLng(14.0583, 108.2772); //for testing
            googleMap.addMarker(new MarkerOptions().position(coordinates).title("Test"));
            googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(coordinates, 15));
        }
    });
}

I am new to Android Studio and just trying things out. I also already tried to comprehend the reference/documentation but it was not that helpful because I don't really get where to start.

I'd be very thankful if someone explained the mistake to me. Of course, if I missed important information you need I'll get it for you.

edit1:

this is the logcat

https://pastebin.com/qMKzsQQS

Answer 1

I stopped trying to implement this as a MapView and switched to a MapAcitvity. Implementing this is much easier it seems, just create "new-> Google-> Map Activity" in Android Studio

I think the issue with my approach was that I didn't know where to put the api key. although it didnt thow an error concerning this...

EDIT:

Here is the solution / an example of how I got it to work:

public class MainActivity extends AppCompatActivity implements OnMapReadyCallback {

private GoogleMap mMap;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    MapView mMap = findViewById(R.id.map);
    mMap.onCreate(savedInstanceState);
    mMap.getMapAsync(this);
}

@Override
public void onStart() {
    MapView mMap = findViewById(R.id.map);
    super.onStart();
    mMap.onStart();
}

@Override
public void onResume() {
    MapView mMap = findViewById(R.id.map);
    super.onResume();
    mMap.onResume();
}

@Override
public void onPause() {
    MapView mMap = findViewById(R.id.map);
    super.onPause();
    mMap.onPause();
}

@Override
public void onStop() {
    MapView mMap = findViewById(R.id.map);
    super.onStop();
    mMap.onStop();
}

@Override
public void onLowMemory() {
    MapView mMap = findViewById(R.id.map);
    super.onLowMemory();
    mMap.onLowMemory();
}

@Override
public void onDestroy() {
    MapView mMap = findViewById(R.id.map);
    super.onDestroy();
    mMap.onDestroy();
}

@RequiresApi(api = Build.VERSION_CODES.M)
@Override
public void onMapReady(final GoogleMap googleMap) {
    mMap = googleMap;
    LatLng Test = new LatLng(50, 9);
    mMap.animateCamera(CameraUpdateFactory.newCameraPosition( new CameraPosition.Builder().target(Test).zoom(15.0f).build()),20000, null);

}

I won't include the xml code, as it is just a fill_parent mapView called "map".

I put the API Key in the AndroidManifest.xml like this:

<meta-data
 android:name="com.google.android.geo.API_KEY"
 android:value="@string/google_maps_key" />

I think thats it. Thanks for the help and tips!