Java tutorial
//package com.java2s; /* Copyright (C) 2015 Rmi Jouannet <remijouannet@gmail.com> This file is part of get10. get10 is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ import android.graphics.Bitmap; import android.graphics.Matrix; public class Main { public static Bitmap mirrorBitmap(Bitmap bitmap) { Matrix matrix = new Matrix(); matrix.preScale(-1.0f, 1.0f); Bitmap newBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, false); return newBitmap; } }