[Android] MapView black after Intent.ACTION_OPEN_DOCUMENT

[moiatto]

I have more fragments.
when I open a picker with Intent.ACTION_OPEN_DOCUMENT in other fragment, then the MapView show black.

See this
video

What can it be?

Declared (no matter if static or not)

private MapView mapView;
private MapPreferences mapPrefs;
private Map map;

@Override
public void onResume() {
  super.onResume();

  mapPrefs.load(map);
  mapView.onResume();
}

@Override
public void onPause() {
    super.onPause();
   
    mapPrefs.save(map);
    mapView.onPause();
}

[devemux86]

See the GettingStarted example for the life cycle of the MapView.
It contains file picker.

There is also the FragmentActivity example with fragments.

[moiatto]

Unfortunately none of this.

I have an activity that show 2 fragment:

• one is for mapview (mapFragment) always visible on the screen
• other fragment where a call the picker or another app (the black map also happens if I call an app)

I call the picker in this second fragment and not direct from activity.

I think the GL engine crashes or no longer finds the context.

[devemux86]

If destroy the fragment / MapView then need to create a new MapView,
as they work in the samples of vtm-android-example.

[moiatto]

I logged the life cycles:
after call the picker:
the Main Activity goes in pause->stop
the MapFragment with MapView goes in pause->stop.

[moiatto]

Solved badly with a trick.

from Activity:
Replaced MapFragment...onRestart()
Removed MapFragment...onPause()

but from the symptoms it seems openGL engine problem.

The issue occurs on external calls (Intent.ACTION_OPEN_DOCUMENT or launch app) from a fragment