事件传递主要有以下的调用顺序 dispatchTouchEvent -->  onInterceptTouchEvent--> onTouchEvent 
一、主要用到以下几个事件
（1）public boolean dispatchTouchEvent(MotionEvent ev) ： 主要做事件分发的作用，源码中会调用到了onInterceptTouchEvent()和onTouchEvent() 用于去判断事件是否需要分发；
当返回值为false时则表示此事件不做分发， dispatchTouchEvent 调用完后不再走下面的onInterceptTouchEvent   ，onTouchEvent ，为true时则根据 onInterceptTouchEvent ，onTouchEvent 去分发事件，走以下调用顺序 ：dispatchTouchEvent -->  onInterceptTouchEvent--> onTouchEvent ；
（2）public boolean onInterceptTouchEvent(MotionEvent ev) ：事件拦截，主要是用于拦截事件是否向下传递，当返回为false时，则事件往下传递，当返回为true时，事件则不向下传递。（继承与ViewGroup的子类才有改方法，继承于View的之类则没有此方法）
（3） public boolean onTouchEvent(MotionEvent event) : 事件消化，如果返回为true时则事件被消化掉，不再向父传递，若果返回为false则向父view传递
二、进行如下实验 ，写了三个自定义事件，继承于LinearLayout ,分别都重写他的三个事件传递方法； 
public class MyView2 extends LinearLayout {

    public MyView2(Context context, AttributeSet attrs) {        super(context, attrs);    }

    @Override    public boolean onTouchEvent(MotionEvent event) {        Log.d("MyView0", "MyView2 onTouchEvent eventType = " + event.getAction() + " eventX = " + event.getX() + " eventY = " + event.getY());        return super.onTouchEvent(event);    }

    @Override    public boolean onInterceptTouchEvent(MotionEvent ev) {        Log.d("MyView0","MyView2 onInterceptTouchEvent eventType = "+ev.getAction()+" eventX = "+ev.getX()+" eventY = "+ev.getY());        return super.onInterceptTouchEvent(ev);    }

    @Override    public boolean dispatchTouchEvent(MotionEvent ev) {        Log.d("MyView0","MyView2 dispatchTouchEvent eventType = "+ev.getAction()+" eventX = "+ev.getX()+" eventY = "+ev.getY());        return super.dispatchTouchEvent(ev);    }}

（1）、页面布局如下：

<?xml version="1.0" encoding="utf-8"?><com.prj.test.yan.eventTranslate.utils.MyView0        xmlns:android="http://schemas.android.com/apk/res/android"        android:layout_height="match_parent"        android:layout_width="match_parent"        android:background="#ffffff"        android:orientation="vertical">    >    <com.prj.test.yan.eventTranslate.utils.MyView1            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_margin="50dp"            android:background="#538CCC"            android:id="@+id/myView1"            android:orientation="vertical"            >        <com.prj.test.yan.eventTranslate.utils.MyView2                android:layout_width="match_parent"                android:layout_height="match_parent"                android:layout_margin="50dp"                android:background="#2CA748"                android:id="@+id/myView2"                android:orientation="horizontal"                >            <TextView                    android:layout_width="wrap_content"                    android:layout_height="wrap_content"                    android:text="测试"/>        </com.prj.test.yan.eventTranslate.utils.MyView2>    </com.prj.test.yan.eventTranslate.utils.MyView1></com.prj.test.yan.eventTranslate.utils.MyView0>
（2）进行以下实验：
a、在事件分发（dispatchTouchEvent）方法中拦截 ：
1、MyView0 中返回false，则事件不再调用 onInterceptTouchEvent--> onTouchEvent ，点击任何部分都只拦截到了MyView0 的事件，不再往包裹的子view传递； 
    @Override    public boolean dispatchTouchEvent(MotionEvent ev) {        Log.d("MyView0","MyView0 dispatchTouchEvent eventType = "+ev.getAction()+" eventX = "+ev.getX()+" eventY = "+ev.getY());          return false;//        return super.dispatchTouchEvent(ev);

    }

结果：

07-28 15:06:27.305  11933-11933/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 dispatchTouchEvent eventType = 0 eventX = 75.89459 eventY = 763.2896
07-28 15:06:28.313  11933-11933/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 dispatchTouchEvent eventType = 0 eventX = 153.7864 eventY = 759.2927
07-28 15:06:29.073  11933-11933/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 dispatchTouchEvent eventType = 0 eventX = 289.59778 eventY = 752.2982
2、MyView1 返回false
07-28 15:11:25.130  13289-13289/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 dispatchTouchEvent eventType = 0 eventX = 152.7878 eventY = 725.3193
07-28 15:11:25.130  13289-13289/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 onInterceptTouchEvent eventType = 0 eventX = 152.7878 eventY = 725.3193
07-28 15:11:25.130  13289-13289/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView1 dispatchTouchEvent eventType = 0 eventX = 52.787796 eventY = 625.3193
07-28 15:11:25.130  13289-13289/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 onTouchEvent eventType = 0 eventX = 152.7878 eventY = 725.3193
b、在onInterceptTouchEvent 中拦截
1、返回为true时则事件不再往子view传递
点击MyView0 的日志：
07-28 15:19:01.544  13700-13700/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 dispatchTouchEvent eventType = 0 eventX = 36.948685 eventY = 814.2498
07-28 15:19:01.544  13700-13700/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 onInterceptTouchEvent eventType = 0 eventX = 36.948685 eventY = 814.2498
07-28 15:19:01.544  13700-13700/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 onTouchEvent eventType = 0 eventX = 36.948685 eventY = 814.2498
点击MyView1 的日志：
07-28 15:20:05.999  13700-13700/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 dispatchTouchEvent eventType = 0 eventX = 183.7448 eventY = 633.3911
07-28 15:20:05.999  13700-13700/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 onInterceptTouchEvent eventType = 0 eventX = 183.7448 eventY = 633.3911
07-28 15:20:05.999  13700-13700/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 onTouchEvent eventType = 0 eventX = 183.7448 eventY = 633.3911
点击MyView2 的日志：
07-28 15:20:26.643  13700-13700/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 dispatchTouchEvent eventType = 0 eventX = 290.5964 eventY = 655.3739
07-28 15:20:26.643  13700-13700/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 onInterceptTouchEvent eventType = 0 eventX = 290.5964 eventY = 655.3739
07-28 15:20:26.643  13700-13700/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 onTouchEvent eventType = 0 eventX = 290.5964 eventY = 655.3739
1、返回为false时则事件往子view传递
点击MyView0的日志：
07-28 15:23:33.009  14150-14150/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 dispatchTouchEvent eventType = 0 eventX = 33.952843 eventY = 795.26465
07-28 15:23:33.009  14150-14150/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 onInterceptTouchEvent eventType = 0 eventX = 33.952843 eventY = 795.26465
07-28 15:23:33.009  14150-14150/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 onTouchEvent eventType = 0 eventX = 33.952843 eventY = 795.26465
点击MyView1的日志：
07-28 15:23:57.900  14150-14150/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 dispatchTouchEvent eventType = 0 eventX = 158.77948 eventY = 901.1819
07-28 15:23:57.900  14150-14150/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 onInterceptTouchEvent eventType = 0 eventX = 158.77948 eventY = 901.1819
07-28 15:23:57.900  14150-14150/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView1 dispatchTouchEvent eventType = 0 eventX = 58.77948 eventY = 801.1819
07-28 15:23:57.900  14150-14150/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView1 onInterceptTouchEvent eventType = 0 eventX = 58.77948 eventY = 801.1819
07-28 15:23:57.900  14150-14150/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView1 onTouchEvent eventType = 0 eventX = 58.77948 eventY = 801.1819
07-28 15:23:57.900  14150-14150/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 onTouchEvent eventType = 0 eventX = 158.77948 eventY = 901.1819
c、onTouchEvent 事件消化
1、当onTouchEvent 返回值为true 时则消化掉改事件，事件不再往上的父view传递
点击MyView1
07-28 15:38:32.993  15091-15091/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 dispatchTouchEvent eventType = 0 eventX = 165.76978 eventY = 715.3271
07-28 15:38:32.993  15091-15091/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 onInterceptTouchEvent eventType = 0 eventX = 165.76978 eventY = 715.3271
07-28 15:38:32.993  15091-15091/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView1 dispatchTouchEvent eventType = 0 eventX = 65.769775 eventY = 615.3271
07-28 15:38:32.993  15091-15091/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView1 onInterceptTouchEvent eventType = 0 eventX = 65.769775 eventY = 615.3271
07-28 15:38:32.993  15091-15091/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView1 onTouchEvent eventType = 0 eventX = 65.769775 eventY = 615.3271
07-28 15:38:33.133  15091-15091/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 onInterceptTouchEvent eventType = 1 eventX = 165.76978 eventY = 715.3271
07-28 15:38:33.133  15091-15091/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView1 dispatchTouchEvent eventType = 1 eventX = 65.769775 eventY = 615.3271
07-28 15:38:33.133  15091-15091/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView1 onTouchEvent eventType = 1 eventX = 65.769775 eventY = 615.3271
07-28 15:38:33.133  15091-15091/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 dispatchTouchEvent eventType = 1 eventX = 165.76978 eventY = 715.3271
2、当onTouchEvent 返回值为false时则不消化掉改事件，事件往上的父view传递
点击MyView2 
07-28 15:45:20.928  15866-15866/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 dispatchTouchEvent eventType = 0 eventX = 335.534 eventY = 554.45276
07-28 15:45:20.928  15866-15866/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 onInterceptTouchEvent eventType = 0 eventX = 335.534 eventY = 554.45276
07-28 15:45:20.928  15866-15866/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView1 dispatchTouchEvent eventType = 0 eventX = 235.534 eventY = 454.45276
07-28 15:45:20.928  15866-15866/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView1 onInterceptTouchEvent eventType = 0 eventX = 235.534 eventY = 454.45276
07-28 15:45:20.928  15866-15866/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView2 dispatchTouchEvent eventType = 0 eventX = 135.534 eventY = 354.45276
07-28 15:45:20.928  15866-15866/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView2 onInterceptTouchEvent eventType = 0 eventX = 135.534 eventY = 354.45276
07-28 15:45:20.928  15866-15866/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView2 onTouchEvent eventType = 0 eventX = 135.534 eventY = 354.45276
07-28 15:45:20.928  15866-15866/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView1 onTouchEvent eventType = 0 eventX = 235.534 eventY = 454.45276
07-28 15:45:20.928  15866-15866/com.prj.test.yan.eventTranslate D/MyView0﹕ MyView0 onTouchEvent eventType = 0 eventX = 335.534 eventY = 554.45276
总结如下：借用以下别人博文的两张图
dispatchTouchEvent ,onInterceptTouchEvent 主要用于事件的向下传递，

Android事件传递相关推荐

  1. 细说Android事件传递

    一.View的dispatchTouchEvent和onTouchEvent 探讨Android事件传递机制前,明确android的两大基础控件类型:View和ViewGroup.View即普通的控件 ...

  2. Android事件传递机制(转)

    Android事件构成 在Android中,事件主要包括点按.长按.拖拽.滑动等,点按又包括单击和双击,另外还包括单指操作和多指操作.所有这些都构成了Android中的事件响应.总的来说,所有的事件都 ...

  3. android imageview 事件传递,Android 事件传递机制TextView,ImageView等没有默认clickable属性的View单独设置onTouch事件注意事项...

    本文讲解TextView,ImageView等没有默认clickable属性的View单独设置onTouch事件 Android 事件传递机制:Android 事件传递机制初涉 我们知道 Button ...

  4. android touch机制,细说Android事件传递机制(dispatchTouchEvent、onInterceptTouchEvent、onTouchEvent)...

    本文背景:前些天用到了之前写的自定义图片文字复合控件,在给他设置监听时遇到了麻烦.虽然最后解决了问题,但发现在不重写LinearLayout的onInterceptTouchEvent时,子Image ...

  5. Android 事件传递机制总结

    Android 事件传递机制总结 Android View虽然不是四大组件,但是其重要程度堪比四大组件.初级工程师到中高级工程师,这些都是很重要的,因为事件分发机制面试也会经常被提及,如果我们能get ...

  6. android 时间传递,Android事件传递

    事件经过主要的三层,分别是Activity.Layout(多个).View 三者都拥有dispatchTouchEvent和onTouchEvent方法. dispatchTouchEvent是用来控 ...

  7. Android事件传递(分发)机制

    Android事件的构成: 在android中,事件主要包括点按,长按,拖拽,滑动等等,另外点按还包括点击和双击.所有这些都构成了android中的事件响应.总的来说所有的事件都由以下三个部分组成: ...

  8. Android事件传递机制【Touch事件】

    Android中提供了ViewGroup.View.Activity三个等级的Touch事件处理.也就是说,这三个地方都有事件回调方法. 测试DEMO视图结构: <com .orgcent.ev ...

  9. Android事件传递简单分析

    1.Activity事件处理 package com.example.eventdemo01;import androidx.appcompat.app.AppCompatActivity;impor ...

  10. Android事件传递可以这样理解

    前言 关于Android中事件传递机制早已是老生常谈的话题,甭管工作多久水平咋样应该都能道出一二.依稀记得刚接触事件分发那会,一股脑的钻进网络上那几张神图,什么三大方法.职责链,最后再巴拉巴拉贴一大堆 ...

最新文章

  1. solve Ax+By+C=0
  2. Useful websites for library
  3. ExtJS中如何根据combobox的选值，动态地决定组件的显隐？
  4. 华为交换机S3700清空配置方法
  5. C#合成解析XML与JSON
  6. 用Oracle归档日志进行恢复方法
  7. BZOJ 4085：[Sdoi2015]bigyration（SDOI 2015 round 2 Day 1）
  8. 大白菜U盘启动盘手动去除捆绑第三方赞助软件
  9. PHP反序列化字符串溢出
  10. oc引导win方法_适配自己的OC引导一键生成Opencore Generation X使用指南
  11. cmd 卸载mysql_彻底卸载MySQL图文教程
  12. 如何脱控极域电子教室
  13. 测试鼠标宏软件,Mini Mouse Macro(鼠标宏设置工具)
  14. 如何删除剽悍的应用软件
  15. V2X消息之MAP消息解读
  16. 【推荐】时间管理文章：Do it now
  17. 平安科技Java开发三面面经（2018年12月）
  18. textarea回车符问题
  19. Django项目连接MongoDB的三种方法
  20. Block Design内部BRAM控制器与外部BRAM的连接

热门文章

  1. php获取今天星期几,PHP获取星期几的常用方法小结
  2. JQuery中三元运算
  3. Vue的生命周期的介绍
  4. 【青少年编程竞赛须知】青少儿学习编程能够参加哪些比赛？
  5. Exchange高危0day漏洞 -- 直接拿下你的域控和服务器 -- 立即行动！CVE-2021-26855
  6. 【C语言】size与strlen的区别解析
  7. dvb s2标准下载_ETSI EN 302 307-1
  8. Unity3D手机斗地主游戏开发实战（04）_出牌判断大小
  9. 导弹防御系统java_导弹防御问题 动态规划 java
  10. JavaScript高级程序设计[美]Nicholas C.Zakas著 读书笔记（三）