触发事件传递

来源：互联网发布：js控制标签隐藏编辑：程序博客网时间：2024/04/28 15:49

一、View(Button,TextView等)

点击事件,正常执行顺序:

按下触发ACTION_DOWN

(Activity)dispatchTouchEvent->(View)dispatchTouchEvent->(View)注册的onTouch监听事件->(View)onTouchEvent

接着弹起触发ACTION_UP

(Activity)dispatchTouchEvent->(View)dispatchTouchEvent->(View)注册的onTouch监听事件->(View)onTouchEvent->(View)onClick监听事件

如果不想执行onClick监听事件，则可以在onTouch监听事件中返回true，则不会执行onTouchEvent，也就不会去执行onClick监听事件

二、ViewGroup(LinearLayout,ListView等)

点击事件,正常执行顺序:

按下触发ACTION_DOWN

(Activity)dispatchTouchEvent->(ViewGroup)dispatchTouchuEvent->(ViewGroup)onInterceptTouchEvent->(View)dispatchTouchEvent->(View)注册的onTouch监听事件->(View)onTouchEvent

接着弹起触发ACTION_UP

(Activity)dispatchTouchEvent->(ViewGroup)dispatchTouchuEvent->(ViewGroup)onInterceptTouchEvent->(View)dispatchTouchEvent->(View)注册的onTouch监听事件->(View)onTouchEvent->(View)onClick监听事件

这里如果ViewGroup的onInterceptTouchuEvent返回true，则下面的View事件不会执行，而会执行(ViewGroup)注册的onTouch监听事件->(ViewGroup)onTouchEvent->(ViewGroup)注册的onClick监听事件

一篇比较好的事件传递文章：http://blog.csdn.net/lmj623565791/article/details/39102591

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