Mobile map package returns null for map - dictionary

Question

I downloaded Arcgis sample mmpk file and even I made a mmpk myself.
In both files I have 1 map(checked by debug) but when I try load the map (with codes in Esri guide page) it returns null for map.
Good to say that I can show online map in my map view and android studio shows no warning or error.
import static n.k.masoud.sbmap.R.id.mapView;
public class ActivityMain extends AppCompatActivity {
private MapView mMapView;
private ArcGISMap map;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mMapView = (MapView) findViewById(mapView);
code and file from main site
try {File mmpkFile = new File(Environment.getExternalStorageDirectory(),"devlabs-package.mmpk");
String mmpkPath = mmpkFile.getAbsolutePath();
final MobileMapPackage mobileMapPackage=new MobileMapPackage(mmpkPath);
mobileMapPackage.addDoneLoadingListener(new Runnable() {
#Override
public void run() {
this if gets false
if (mobileMapPackage.getLoadStatus() == LoadStatus.LOADED) {
showMessage(String.format("Number of maps = %d", mobileMapPackage.getMaps().size()));
map = mobileMapPackage.getMaps().get(0);
} else {
dealWithLoadFailure();
}
}
});
mobileMapPackage.loadAsync();
}
catch (Exception err){
Log.e("TAG", "onCreate: "+err);
}
map.addDoneLoadingListener(new Runnable() {
#Override
public void run() {
if (map.getLoadStatus() == LoadStatus.LOADED) {
Log.e("TAG", "run: map loaded ok" );
// Once map is loaded, can check its properties and content
if (map.getBookmarks().size() > 0) {
}
} else {
dealWithLoadFailure();
}
}
});
map.loadAsync();
As I told part below works correctly
// for online maps
// ArcGISMap map = new ArcGISMap(Basemap.Type.TOPOGRAPHIC, 29.453826, 60.852134,12);
mMapView.setMap(map);
mMapView.addLayerViewStateChangedListener(new LayerViewStateChangedListener() {
#Override
public void layerViewStateChanged(LayerViewStateChangedEvent layerViewStateChangedEvent) {
// Each layer may have more than one layer view state.
StringBuilder layerStatuses = new StringBuilder();
for (LayerViewStatus status : layerViewStateChangedEvent.getLayerViewStatus()) {
if (layerStatuses.length() > 0) {
layerStatuses.append(",");
} layerStatuses.append(status.name());
}
showMessage(String.format("Layer '%s' status=%s", layerViewStateChangedEvent.getLayer().getName(), layerStatuses.toString()));
} });
}
#Override
protected void onPause(){
mMapView.pause();
super.onPause();
}
#Override
protected void onResume(){
super.onResume();
mMapView.resume();
}
}

Answer 1

if the line
if (mobileMapPackage.getLoadStatus() == LoadStatus.LOADED)
is returning false, then the mobile map package is not loaded and won't contain any maps.
In your dealWithLoadFailure() function you can retrieve the load error:
mobileMapPackage.getLoadError()
and see what it is. It should tell you what the error causing the load failure is.

Answer 2

One of my friends tried this way but didn't got any result just like me.
So he changed the official guide code to this and got well response.
I think he got code from Internet , so I don't know about it's copyright permission.
private void setupMobileMap() {
if (mMapView != null) {
File mmpkFile = new File(Environment.getExternalStorageDirectory(), "devlabs-package.mmpk");
final MobileMapPackage mapPackage = new MobileMapPackage(mmpkFile.getAbsolutePath());
mapPackage.addDoneLoadingListener(new Runnable() {
#Override
public void run() {
// Verify the file loaded and there is at least one map
if (mapPackage.getLoadStatus() == LoadStatus.LOADED && mapPackage.getMaps().size() > 0) {
mMapView.setMap(mapPackage.getMaps().get(0));
} else {
// Error if the mobile map package fails to load or there are no maps included in the package
//setupMap();
//Log for Error
}
}
});
mapPackage.loadAsync();
}
}