AndroidImageCompare.java

/**
 * Compare two images.
 * @param bitmap1
 * @param bitmap2
 * @return true iff both images have the same dimensions and pixel values.
 */
public static boolean compareImages(Bitmap bitmap1, Bitmap bitmap2) {
    if (bitmap1.getWidth() != bitmap2.getWidth() ||
            bitmap1.getHeight() != bitmap2.getHeight()) {
        return false;
    }

    for (int y = 0; y < bitmap1.getHeight(); y++) {
        for (int x = 0; x < bitmap1.getWidth(); x++) {
            if (bitmap1.getPixel(x, y) != bitmap2.getPixel(x, y)) {
                return false;
            }
        }
    }

    return true;
}