Java tutorial
//package com.java2s; import android.graphics.Bitmap; import android.graphics.Canvas; public class Main { public static Bitmap overlay(Bitmap b, int x, int y) { Bitmap empty = Bitmap.createBitmap(x, y, Bitmap.Config.ARGB_4444); Canvas cv = new Canvas(empty); cv.drawBitmap(b, 0, 0, null); cv.save(); return empty; } }