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博客园 - 晓光

Android获取手机短信 Android系统的进程,任务,服务的信息 Android程序如何安装到内存或卡中 (转)解决Debug certificate expired的问题 (转)禁止横屏和竖屏切换 (转)Android Bitmap 与 Drawable之间的转换 (转)Android中两种设置全屏的方法 (转)Android之getSystemService (转)SQL Server Compact Edition 数据库连接字符串 (转)Android Project Structure (转)SqlDateTime溢出类错误解决 C# 数据库连接字符串集合 - 晓光 - 博客园 Android Activity生命周期 Flex HttpService,WebService简单介绍 (转)Flex Module通信(2)——使用事件 (转)Flex Modules通信(1)——通过接口 (转)Canvas不能接收 rollOver和roolOut事件的解决方案 - 晓光 - 博客园 (转)FLEX中使用outerDocument - 晓光 - 博客园 (转)C# Hashtable Synchronized vs SyncRoot
(转)Android ViewGroup的onInterceptTouchEvent()事件分析
晓光 · 2011-03-29 · via 博客园 - 晓光

onInterceptTouchEvent()的机制:

  1. down事件首先会传递到onInterceptTouchEvent()方法

  2. 如果该ViewGroup的onInterceptTouchEvent()在接收到down事件处理完成之后return false,

  那么后续的move, up等事件将继续会先传递给该ViewGroup,之后才和down事件一样传递给最

  终的目标view的onTouchEvent()处理

  3. 如果该ViewGroup的onInterceptTouchEvent()在接收到down事件处理完成之后return true,

  那么后续的move, up等事件将不再传递给onInterceptTouchEvent(),而是和down事件一样

  传递给该ViewGroup的onTouchEvent()处理,注意,目标view将接收不到任何事件。

  4. 如果最终需要处理事件的view的onTouchEvent()返回了false,那么该事件将被传递至其上一

  层次的view的onTouchEvent()处理

  5. 如果最终需要处理事件的view 的onTouchEvent()返回了true,那么后续事件将可以继续传递

  给该view的onTouchEvent()处理