Java tutorial
//package com.java2s; //License from project: Apache License import android.graphics.Bitmap; import android.graphics.Matrix; public class Main { /** * TODO doc * * @param source * @return */ public static Bitmap flipVerticallyBitmap(Bitmap source) { Matrix m = new Matrix(); m.preScale(1, -1); return Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), m, false); } }