android 在图片上涂鸦（添加水印同理）

public  Bitmap getNoseInfo(float x,float y,Bitmap srcBitmap){
Bitmap tmp;
tmp =srcBitmap.copy(Bitmap.Config.ARGB_8888, true);
Canvas localCanvas = new Canvas(tmp);
Paint localPaint = new Paint();
localPaint.setColor(0xffff0000);
localPaint.setStyle(Paint.Style.FILL);
Log.i("tag","y坐标=="+srcBitmap.getHeight()*y/100+"x坐标==="+"srcBitmap.getWidth()=="+srcBitmap.getWidth()*x/100);
localCanvas.drawCircle(srcBitmap.getWidth()*x/100, srcBitmap.getHeight()*y/100, 10, localPaint);
return tmp;
}