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Android Event-Dispatching

Activity: public boolean dispatchTouchEvent(MotionEvent ev)； public boolean onTouchEvent(MotionEvent ev); ViewGroup: public boolean dispatchTouchEvent(MotionEvent ev)； public boolean onInterceptTouchEvent(MotionEvent ev); public boolean onTouchEvent(MotionEvent ev); View: public boolean dispatchTouchEvent(MotionEvent ev)； public boolean onTouchEvent(MotionEvent ev);

从父到子: dispatchTouchEvent 从子到父: onTouchEvent ViewGroup: 可以使用onInterceptTouchEvent来拦截事件, 在当前view 的dispatchTouchEvent后调用.

Reference

5 Steps for Beginners to Understand Event-Dispatching in Android

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