Android 马赛克(Mosaics)效果

　　public static Bitmap getMosaicsBitmap(Bitmap bmp, double precent) {

　　long start = System.currentTimeMillis();

　　int bmpW = bmp.getWidth();

　　int bmpH = bmp.getHeight();

　　Bitmap resultBmp = Bitmap.createBitmap(bmpW, bmpH, Bitmap.Config.ARGB_8888);

　　Canvas canvas = new Canvas(resultBmp);

　　Paint paint = new Paint();

　　double unit;

　　if (precent == 0) {

　　unit = bmpW;

　　} else {

　　unit = 1 / precent;

　　}

　　double resultBmpW = bmpW / unit;

　　double resultBmpH = bmpH / unit;

　　for (int i = 0; i < resultBmpH; i++) {

　　for (int j = 0; j < resultBmpW; j++) {

　　int pickPointX = (int) (unit * (j + 0.5));

　　int pickPointY = (int) (unit * (i + 0.5));

　　int color;

　　if (pickPointX >= bmpW || pickPointY >= bmpH) {

　　color = bmp.getPixel(bmpW / 2, bmpH / 2);

　　} else {

　　color = bmp.getPixel(pickPointX, pickPointY);

　　}

　　paint.setColor(color);

　　canvas.drawRect((int) (unit * j), (int) (unit * i), (int) (unit * (j + 1)), (int) (unit * (i + 1)), paint);

　　}

　　}

　　canvas.setBitmap(null);

　　long end = System.currentTimeMillis();

　　Log.v(TAG, "DrawTime:" + (end - start));

　　return resultBmp;

　　}