Touch move Android not smooth

Question

I used this code: In onCreate:

imageView.setOnTouchListener((OnTouchListener) this);

And onTouch:

 case MotionEvent.ACTION_MOVE:
                canvas.drawLine(oldX, oldY, event.getX(), event.getY(), paint);
                imageView.invalidate();

If layout only contain one imageView, draw very smooth. But I add 2 3 or more than the view (button, image background), action_Move get event slowly and draw not smooth. Please help me!

score 0 · Answer 1 · edited May 23 '17 at 10:31

0

please refer to how to have smooth and quick drawing in a fingerPaing or use draw circle to fill the begin and end, also file the gap betwee two lines

edited May 23 '17 at 10:31

Community

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answered Sep 18 '13 at 07:49

zjywill

1,458
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score 0 · Answer 2 · answered Dec 04 '14 at 16:00

0

Use getRawX() and getRawY() instead of getX() and getY()

answered Dec 04 '14 at 16:00

Konstantin Konopko

5,229
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Touch move Android not smooth

2 Answers2