使用Ontouch侦听器Android检测多点触控

Question

I currently have an imageview element that upon being touched, that tests if the action is an actiondown event, and if it is, it gets the coordinates of the touch with getraw(x or y) and then carries out an action based on those coordinates. How would I implement this to get two sets of coordinates from a two finger multitouch event?

Answer 1

Take a look at the ACTION_POINTER_DOWN action define in MotionEvent . This is the event that will get called when additional fingers come down after the first ACTION_DOWN triggers. You can use methods like getActionMasked() to assist you in determining which finger events are related to.

MotionEvent Docs

HTH

Answer 2

这是一个很好的例子