ColorFilterTransformation.java 文件源码

@Override public Bitmap transform(Bitmap source) {

    int width = source.getWidth();
    int height = source.getHeight();

    Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

    Canvas canvas = new Canvas(bitmap);
    Paint paint = new Paint();
    paint.setAntiAlias(true);
    paint.setColorFilter(new PorterDuffColorFilter(mColor, PorterDuff.Mode.SRC_ATOP));
    canvas.drawBitmap(source, 0, 0, paint);
    source.recycle();

    return bitmap;
  }