Android：图片添加水印

public static Bitmap mark(Bitmap src, String watermark, Point location, Color color, int alpha, int size, boolean underline) {  int w = src.getWidth();  int h = src.getHeight();  Bitmap result = Bitmap.createBitmap(w, h, src.getConfig());  Canvas canvas = new Canvas(result); canvas.drawBitmap(src, 0, 0, null);  Paint paint = new Paint(); paint.setColor(color); paint.setAlpha(alpha); paint.setTextSize(size); paint.setAntiAlias(true); paint.setUnderlineText(underline); canvas.drawText(watermark, location.x, location.y, paint);  return result; }