How to make bitmap transparent?

Question

/**
 * @param bitmap
 *            The source bitmap.
 * @param opacity
 *            a value between 0 (completely transparent) and 255 (completely
 *            op         


        

Answer 1

Try this. Also note that setAlpha is in 0-255 range

//bmp is your Bitmap object

BitmapDrawable bd = new BitmapDrawable(bmp);
bd.setAlpha(50);

ImageView v = (ImageView) findViewById(R.id.image);
v.setImageDrawable(bd);