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;}

 public static Bitmap getMosaicsBitmaps(Bitmap bmp, double precent) { long start = System.currentTimeMillis(); int bmpW = bmp.getWidth(); int bmpH = bmp.getHeight(); int[] pixels = new int[bmpH * bmpW]; bmp.getPixels(pixels, 0, bmpW, 0, 0, bmpW, bmpH); int raw = (int) (bmpW * precent); int unit; if (raw == 0) { unit = bmpW; } else { unit = bmpW / raw; //原來的unit*unit像素點合成一個，使用原左上角的值 } if (unit >= bmpW || unit >= bmpH) { return getMosaicsBitmap(bmp, precent); } for (int i = 0; i < bmpH; ) { for (int j = 0; j < bmpW; ) {  int leftTopPoint = i * bmpW + j;  for (int k = 0; k < unit; k++) {  for (int m = 0; m < unit; m++) {   int point = (i + k) * bmpW + (j + m);   if (point < pixels.length) {   pixels[point] = pixels[leftTopPoint];   }  }  }  j += unit; } i += unit; } long end = System.currentTimeMillis(); Log.v(TAG, "DrawTime:" + (end - start)); return Bitmap.createBitmap(pixels, bmpW, bmpH, Bitmap.Config.ARGB_8888);}