Impose a bitmap over another bitmap in android

I have a thumbnail gallery. I would like to impose a bitmap over every thumbnail image. The resultant image should be either a bitmap or a drawable. Hence the gallery now consists of these resultant images. When the user scrolls through the gallery, the resultant image will appear. I am using the following code

 public class GalleryVideo extends Activity {
private Integer[] imgId = {R.drawable.followtheleader, 
            R.drawable.fruitsalad, 
            R.drawable.gettingstrong,
            R.drawable.gulpgulp,
            R.drawable.heythereshakyshaky,
            R.drawable.its_a_wiggly_circus,
            R.drawable.lettucesing,
            R.drawable.monkey_dance,
            R.drawable.quack_quack,
            R.drawable.vegetable_soup,
            R.drawable.walk};


public void onCreate(Bundle savedInstanceState) {

    ....................

        selected_photo = (ImageView)findViewById(R.id.selected_photo);            
            BitmapFactory.Options options = new BitmapFactory.Options();
            options.inPreferredConfig = Bitmap.Config.ARGB_8888;
            bitmap = BitmapFactory.decodeFile(photoPath, options);
            selected_photo.setImageBitmap(bitmap);

    gallery = (Gallery) findViewById(R.id.examplegallery);
    gallery.setAdapter(new AddImgAdp(getApplicationContext()));
    th_name = (ImageView)findViewById(R.id.th_name);

            gallery.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView parent, View v, int position, long id) {
                galleryVideoCounter = position;

                Intent myIntent = new Intent(getApplicationContext(), StartDance.class);
                startActivity(myIntent);
               }
            });


    ....................

}


public class AddImgAdp extends BaseAdapter {
        int GalItemBg;
        private Context cont;

        public AddImgAdp(Context c) {
            cont = c;
            TypedArray typArray = obtainStyledAttributes(R.styleable.GalleryTheme);
            GalItemBg = typArray.getResourceId(R.styleable.GalleryTheme_android_galleryItemBackground, 0);
            typArray.recycle();

        }

        public int getCount() {
            return imgId.length;
        }

        public Object getItem(int position) {
            return position;
        }

        public long getItemId(int position) {
            try {
                if(position > 0)
                {
                    audioPosCount = position;
                }
                if(audioPosCount == 0 && audioPosCount != audioPosCount1)
                {
                    galleryAudioCounter++;
                    audioPosCount1 = audioPosCount; 



                }

                if(audioPosCount > 0 && audioPosCount != -1 && audioPosCount != audioPosCount1)
                {
                    galleryAudioCounter++;
                    audioPosCount = position;
                    audioPosCount1 = audioPosCount;               


                }
                return position;
            } catch (Exception e) {

            }
        }

        public View getView(int position, View convertView, ViewGroup parent) {
            audioPosCount = 0;
            ImageView imgView = new ImageView(getApplicationContext());
            imgView.setImageResource(imgId[position]);
            imgView.setLayoutParams(new Gallery.LayoutParams(((int)(width / 1.45)), ((int)(height / 1.6))));
            imgView.setScaleType(ImageView.ScaleType.FIT_XY);
            return imgView;
        }
    }
}

I n开发者_Python百科eed a sample code for this feature.