Android Example: Using File Assets- via http://goo.gl/EeqaE6

    try {
        in = pAssetManager.open(pAssetPath);
        BitmapFactory.decodeStream(in, null, decodeOptions);
    } catch (final IOException e) {
        Debug.e("Failed loading Bitmap in AssetBitmapTextureAtlasSource. AssetPath: " + pAssetPath, e);
    } finally {
        StreamUtils.close(in);
    }