Capture screen shot of GoogleMap Android API V2

Question

Final Update

The feature request has been fulfilled by Google. Please see this answer below.

Original Question

Using the old version of the Google Maps Android API, I was able to capture a screenshot of the google map to share via social media. I used the following code to capture the screenshot and save the image to a file and it worked great:

public String captureScreen()
{
    String storageState = Environment.getExternalStorageState();
    Log.d("StorageState", "Storage state is: " + storageState);

    // image naming and path  to include sd card  appending name you choose for file
    String mPath = this.getFilesDir().getAbsolutePath();

    // create bitmap screen capture
    Bitmap bitmap;
    View v1 = this.mapView.getRootView();
    v1.setDrawingCacheEnabled(true);
    bitmap = Bitmap.createBitmap(v1.getDrawingCache());
    v1.setDrawingCacheEnabled(false);

    OutputStream fout = null;

    String filePath = System.currentTimeMillis() + ".jpeg";

    try 
    {
        fout = openFileOutput(filePath,
                MODE_WORLD_READABLE);

        // Write the string to the file
        bitmap.compress(Bitmap.CompressFormat.JPEG, 90, fout);
        fout.flush();
        fout.close();
    } 
    catch (FileNotFoundException e) 
    {
        // TODO Auto-generated catch block
        Log.d("ImageCapture", "FileNotFoundException");
        Log.d("ImageCapture", e.getMessage());
        filePath = "";
    } 
    catch (IOException e) 
    {
        // TODO Auto-generated catch block
        Log.d("ImageCapture", "IOException");
        Log.d("ImageCapture", e.getMessage());
        filePath = "";
    }

    return filePath;
}

However, the new GoogleMap object used by V2 of the api does not have a "getRootView()" method like MapView does.

I tried to do this:

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

    View v1 = mapFragment.getView();

But the screenshot that I get does not have any map content and looks like this:

Has anyone figured out how to take a screenshot of the new Google Maps Android API V2?

Update

I also tried to get the rootView this way:

View v1 = getWindow().getDecorView().getRootView();

This results in a screenshot that includes the action bar at the top of the screen, but the map is still blank like the screenshot I attached.

Update

A feature request has been submitted to Google. Please go star the feature request if this is something you want google to add in the future: Add screenshot ability to Google Maps API V2

Answer 1

Update - Google has added a snapshot method**!:

The feature request for a method to take a screen shot of the Android Google Map API V2 OpenGL layer has been fulfilled.

To take a screenshot, simply implement the following interface:

public abstract void onSnapshotReady (Bitmap snapshot)

and call:

public final void snapshot (GoogleMap.SnapshotReadyCallback callback)

Example that takes a screenshot, then presents the standard "Image Sharing" options:

public void captureScreen()
    {
        SnapshotReadyCallback callback = new SnapshotReadyCallback() 
        {

            @Override
            public void onSnapshotReady(Bitmap snapshot) 
            {
                // TODO Auto-generated method stub
                bitmap = snapshot;

                OutputStream fout = null;

                String filePath = System.currentTimeMillis() + ".jpeg";

                try 
                {
                    fout = openFileOutput(filePath,
                            MODE_WORLD_READABLE);

                    // Write the string to the file
                    bitmap.compress(Bitmap.CompressFormat.JPEG, 90, fout);
                    fout.flush();
                    fout.close();
                } 
                catch (FileNotFoundException e) 
                {
                    // TODO Auto-generated catch block
                    Log.d("ImageCapture", "FileNotFoundException");
                    Log.d("ImageCapture", e.getMessage());
                    filePath = "";
                } 
                catch (IOException e) 
                {
                    // TODO Auto-generated catch block
                    Log.d("ImageCapture", "IOException");
                    Log.d("ImageCapture", e.getMessage());
                    filePath = "";
                }

                openShareImageDialog(filePath);
            }
        };

        mMap.snapshot(callback);
    }

Once the image is finished being captured, it will trigger the standard "Share Image" dialog so the user can pick how they'd like to share it:

public void openShareImageDialog(String filePath) 
{
File file = this.getFileStreamPath(filePath);

if(!filePath.equals(""))
{
    final ContentValues values = new ContentValues(2);
    values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg");
    values.put(MediaStore.Images.Media.DATA, file.getAbsolutePath());
    final Uri contentUriFile = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);

    final Intent intent = new Intent(android.content.Intent.ACTION_SEND);
    intent.setType("image/jpeg");
    intent.putExtra(android.content.Intent.EXTRA_STREAM, contentUriFile);
    startActivity(Intent.createChooser(intent, "Share Image"));
}
else
{
            //This is a custom class I use to show dialogs...simply replace this with whatever you want to show an error message, Toast, etc.
    DialogUtilities.showOkDialogWithText(this, R.string.shareImageFailed);
}
}

Documentation is here