android kotlin Does not display the a simple map

NivNaory — Tue, 31 Aug 2021 11:18:42 GMT

hello, I have a problem when I tried to display a map with kotlin.

I have the following code on kotlin and java

kotlin:

class MainActivity : AppCompatActivity() { private val activityMainBinding by lazy { ActivityMainBinding.inflate(layoutInflater) } private val mapView: MapView by lazy { activityMainBinding.mapView } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) // create a new map with an imagery basemap and set it to the map view var map= ArcGISMap(Basemap.Type.STREETS,34.056295,-117.195800,17) mapView.map=map } override fun onPause() { mapView.pause() super.onPause() } override fun onResume() { super.onResume() mapView.resume() } override fun onDestroy() { mapView.dispose() super.onDestroy() } }

java:

public class MainActivity extends AppCompatActivity { private MapView mMapView; private ArcGISMap map; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // inflate MapView from layout mMapView = findViewById(R.id.mapView); // create a map with the a topographic basemap map= new ArcGISMap(Basemap.Type.STREETS,34.056295,-117.195800,17); mMapView.setMap(map); } @Override protected void onPause() { mMapView.pause(); super.onPause(); } @Override protected void onResume() { super.onResume(); mMapView.resume(); } @Override protected void onDestroy() { mMapView.dispose(); super.onDestroy(); } }

And the problem is that in java it works perfectly and displays a map well. but in kotlin it doesn't work and show me a blank page and doesn't display a map.

and I follow the documentation step by step.

there is something I missed mabye? I open a new project with kotlin and install all the requirements for this project.

topic android kotlin Does not display the a simple map in Developers Questions

android kotlin Does not display the a simple map