How can I make an image transparent on Android?

Question

I am using a linear layout and frame layout. In the linear layout I keep an image as background and in the frame layout I keep an imageView. In that imageView I give an image.

Answer 1

As setAlpha int has been deprecated, setImageAlpha (int) can be used

ImageView img = (ImageView) findViewById(R.id.img_image);
img.setImageAlpha(127); //value: [0-255]. Where 0 is fully transparent and 255 is fully opaque.