Android: how to notify Activity when Fragments views are ready?

Question

I\'m using Google Maps API V2 in an activity wih drop down navigation where the map is on the second position.

I\'m adding the map pragmatically like:

Answer 1

I'm not sure I'm completely understanding your issue, but I have a similar setup where I'm using a navigation drop down menu. Here's what works for me:

1.) Load the fragment from an xml file and call setupMapIfNeeded()

SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.basicMap);

setUpMapIfNeeded();

Here is the xml file for reference:

2.) Then setup the map (for details of isGoogleMapsInstalled(), see this question)

    private void setUpMapIfNeeded() 
    {
    // Do a null check to confirm that we have not already instantiated the map.
    if (mMap == null) 
    {
        // Try to obtain the map from the SupportMapFragment.
        mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.basicMap)).getMap();
        // Check if we were successful in obtaining the map.
        if(isGoogleMapsInstalled())
        {
            if (mMap != null) 
            {
                mMap.setOnCameraChangeListener(getCameraChangeListener());
                mMap.setInfoWindowAdapter(new MyCustomInfoWindowAdapter(this));
            }
        }
        else
        {
            MapConstants.showDialogWithTextAndButton(this, R.string.installGoogleMaps, R.string.install, false, getGoogleMapsListener());
        }
    }
    }

3.) Make sure you also call setUpMapIfNeeded() from onResume():

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

    setUpMapIfNeeded();
}