@ -48,7 +48,7 @@ public boolean dispatchTouchEvent(MotionEvent event) {
最后可以画一下这个图:
![](https://i.loli.net/2019/02/11/5c60d51909117.png)
![](https://i.loli.net/2020/07/22/qgVSpUYRJP7ycrO.jpg)
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