如前文《[谁动了我的截图?--Monkeyrunner takeSnapshot方法源码跟踪分析](http://blog.csdn.net/zhubaitian/article/details/40262831)》所述,本文主要会尝试描述android的自动化测试框架MonkeyRunner究竟是如何和目标设备进行通信的。
在上一篇文章中我们其实已经描述了其中一个方法,就是通过adb协议发送adb服务器请求的方式驱动android设备的adbd守护进程去获取FrameBuffer的数据生成屏幕截图。那么MonkeyRunner还会用其他方式和目标设备进行通信吗?答案是肯定的,且看我们一步步分析道来。
## 1.概述
MonkeyRunner和目标设备打交道都是通过ChimpChat层进行封装分发但最终是在ddmlib进行处理的,其中囊括的方法大体如下:
- **发送monkey命令**:MonkeyRunner先通过adb shell发送命令"monkey -port 12345"在目标机器上启动monkey以监听端口接受连接,然后MonkeyRunner通过连接该端口建立socket并发送monkey命令。所有与界面相关的操作都是通过这种方式发送到目标机器的。
- **发送adb协议请求**:通过发送adb协议请求来与目标设备通信的,详情请查看<<[谁动了我的截图?--Monkeyrunner takeSnapshot方法源码跟踪分析](http://blog.csdn.net/zhubaitian/article/details/40262831)>>和<<[adb概览及协议参考](http://blog.csdn.net/zhubaitian/article/details/40260783)>>,其实adb命令行客户端的所有命令最终都是通过发送遵循adb协议的请求来实现的,只是做成命令行方式方便终端用户使用而已
- **发送adb shell命令**:模拟adb命令行工具发送adb shell命令,只是不是真正的直接命令行调用adb工具,而是在每一个命令执行之前先通过上面的“**发送adb协议请求**“发送“shell:”请求建立一个和adb服务器通信的adb shell的socket连接通道,adb服务器再和目标设备的adb守护进程进行通信
以下是MonkeyDevice所有请求对应的与设备通信方式
<table cellspacing="0" cellpadding="0" class=" " style="border-collapse:collapse"><tbody><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:19px; padding:4px; background-color:rgb(191,191,191)"><p align="center" style="margin-top:0px; margin-bottom:0px; text-align:center"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px"><strong>请求</strong></span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:19px; padding:4px; background-color:rgb(191,191,191)"><p align="center" style="margin-top:0px; margin-bottom:0px; text-align:center"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px"><strong>是否需要和目标设备通信</strong></span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:19px; padding:4px; background-color:rgb(191,191,191)"><p align="center" style="margin-top:0px; margin-bottom:0px; text-align:center"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px"><strong>通信方式</strong></span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:19px; padding:4px; background-color:rgb(191,191,191)"><p align="center" style="margin-top:0px; margin-bottom:0px; text-align:center"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px"><strong>注解</strong></span></p></td></tr><tr><td colspan="4" valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:383px; height:13px; padding:4px; background-color:rgb(255,192,114)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px"><strong>发送</strong></span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px"><strong>adb shell</strong></span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px"><strong>命令</strong></span></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:28px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">getSystemProperty</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:28px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:28px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">adb shell</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:28px; padding:4px"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:46px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">installPackage</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:46px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:46px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">adb shell</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:46px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">传送数据时发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">adb</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">协议请求,发送安装命令时使用</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">adb shell</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">startActivity</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">adb shell</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:29px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">broadcastIntent</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:29px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:29px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">adb shell</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:29px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">instrument</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">adb shell</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:34px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">shell</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:34px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:34px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">adb shell</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:34px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令为空,所以相当于直接执行</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">”adb shell “</span></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">removePackage</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">adb shell</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td colspan="4" valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:383px; height:13px; padding:4px; background-color:rgb(255,192,114)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">monkey</span><span style="font-size:11px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">getProperty</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">monkey</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px"> </span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">wake</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">monkey</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px"> </span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px"><p style="margin-top:0px; margin-bottom:0px; line-height:26px"><span style="font-size:14px; line-height:normal; font-family:Arial; letter-spacing:0px; color:rgb(54,46,43)">dispose </span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-family:Heiti SC Light; font-size:10px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">monkey</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px"> </span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">press</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">monkey</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px"> </span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">type</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">monkey</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px"> </span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">touch</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">monkey</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px"> </span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">drag</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">monkey</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px"> </span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">getViewIdList</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">monkey</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px"> </span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">getView</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">monkey</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px"> </span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">getViews</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">monkey</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px"> </span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">getRootView</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">monkey</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px"> </span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td colspan="4" valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:383px; height:13px; padding:4px; background-color:rgb(255,192,114)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">adb</span><span style="font-size:11px; font-family:'Heiti SC Light'; letter-spacing:0px">协议请求</span></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Arial; letter-spacing:0px">takeSnapshot</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">adb</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">协议请求</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:13px; padding:4px"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">reboot</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">adb</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">协议命令</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:14px; padding:4px; background-color:rgb(239,239,239)"><p style="margin-top:0px; margin-bottom:0px; font-family:Helvetica; min-height:14px"><br/></p></td></tr><tr><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:36px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:11px; font-family:Monaco; letter-spacing:0px">installPackage</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:36px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">是</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:36px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">adb</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">协议请求</span></p></td><td valign="top" style="border-style:solid; border-color:rgb(0,0,0); width:89px; height:36px; padding:4px"><p style="margin-top:0px; margin-bottom:0px"><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">相当于直接发送</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">adb</span><span style="font-size:10px; font-family:'Heiti SC Light'; letter-spacing:0px">命令行命令</span><span style="font-size:10px; font-family:Helvetica; letter-spacing:0px">’adb push’</span></p></td></tr></tbody></table>
分析之前请大家准备好对应的几个库的源码:
![](https://box.kancloud.cn/2016-08-15_57b1755ac570e.jpg)
## 2. 发送monkey命令
在剖析如何发送monkey命令之前,我们需要先去了解一个类,因为这个类是处理所有monkey命令的关键,这就是ChimpChat库的ChimpManager类。
我们先查看其构造函数,看它是怎么初始化的:
~~~
/* */ private Socket monkeySocket;
/* */
/* */ private BufferedWriter monkeyWriter;
/* */
/* */ private BufferedReader monkeyReader;
/* */
/* */
/* */ public ChimpManager(Socket monkeySocket)
/* */ throws IOException
/* */ {
/* 62 */ this.monkeySocket = monkeySocket;
/* 63 */ this.monkeyWriter = new BufferedWriter(new OutputStreamWriter(monkeySocket.getOutputStream()));
/* */
/* 65 */ this.monkeyReader = new BufferedReader(new InputStreamReader(monkeySocket.getInputStream()));
/* */ }
~~~
初始化所做的事情如下
- 把构造函数传进来的monkeySocket这个socket对象保存起来,往下会分析这个socket是如何创立的
- 初始化monkeyWriter这个BufferedWriter,今后往monkey的socket发送命令的时候用的就是它
- 初始化monkeyReader这个BufferedReader,今后从monkey的socket读返回的时候用的就是它
好,那么现在我们返回来看这个类是什么时候实例化的。请定位到AdbChimpDevice的构造函数:
~~~
/* */ private ChimpManager manager;
/* */
/* */ public AdbChimpDevice(IDevice device)
/* */ {
/* 70 */ this.device = device;
/* 71 */ this.manager = createManager("127.0.0.1", 12345);
/* */
/* 73 */ Preconditions.checkNotNull(this.manager);
/* */ }
~~~
可以看到ChimpManager是在AdbChimpDevice构造的时候已经开始初始化的了,初始化传入的地址是"127.0.0.1"和端口是12345,这个是在下面分析的createManager这个方法中创建socket用的,也就是我们上面提到的monkeySocket.在继续之前这里我们先整理下思路,结合上一篇文章,我们看到几个重要的类的初始化流程是这样的:
- MonkeyRunner在启动的时候会先启动MonkeyRunnerStarter这个类,该类的构造函数调用ChimpChat的getInstance方法实例化ChimpChat.
- ChimpChat的getInstance方法会先实例化AdbBackend这个类,然后构建 ChimpChat自身这个实例
- 用户调用MonkeyRunner.waitForConnection()方法初始化MonkeyDevice
- 以上的waitForConnection()又调用的是ChimpChat的waitforConnection()方法
- ChimpChat的waitForConnection方法调用的是AdbBackend的waitForConnection方法最终会findAttachedDevice找到目标设备然后用该设备初始化AdbChimpDevice
根据以上的流程我们就很清晰AdbChimpDevice其实在测试脚本一调用MonkeyRunner.waitForConnection方法的时候就已经会初始化的了,也就是说ChimpManager也在这个时候已经初始化的了。
好,那么我们继续看AdbChimpDevice里面的方法createManager是如何对ChimpManager进行初始化的:
~~~
/* */ private ChimpManager createManager(String address, int port) {
/* */ try {
/* 125 */ this.device.createForward(port, port);
/* */ } catch (TimeoutException e) {
/* 127 */ LOG.log(Level.SEVERE, "Timeout creating adb port forwarding", e);
/* 128 */ return null;
/* */ } catch (AdbCommandRejectedException e) {
/* 130 */ LOG.log(Level.SEVERE, "Adb rejected adb port forwarding command: " + e.getMessage(), e);
/* 131 */ return null;
/* */ } catch (IOException e) {
/* 133 */ LOG.log(Level.SEVERE, "Unable to create adb port forwarding: " + e.getMessage(), e);
/* 134 */ return null;
/* */ }
/* */
/* 137 */ String command = "monkey --port " + port;
/* 138 */ executeAsyncCommand(command, new LoggingOutputReceiver(LOG, Level.FINE));
/* */
/* */ try
/* */ {
/* 142 */ Thread.sleep(1000L);
/* */ } catch (InterruptedException e) {
/* 144 */ LOG.log(Level.SEVERE, "Unable to sleep", e);
/* */ }
/* */ InetAddress addr;
/* */ try
/* */ {
/* 149 */ addr = InetAddress.getByName(address);
/* */ } catch (UnknownHostException e) {
/* 151 */ LOG.log(Level.SEVERE, "Unable to convert address into InetAddress: " + address, e);
/* 152 */ return null;
/* */ }
/* */
/* */
/* */
/* */
/* */
/* 159 */ boolean success = false;
/* 160 */ ChimpManager mm = null;
/* 161 */ long start = System.currentTimeMillis();
/* */
/* 163 */ while (!success) {
/* 164 */ long now = System.currentTimeMillis();
/* 165 */ long diff = now - start;
/* 166 */ if (diff > 30000L) {
/* 167 */ LOG.severe("Timeout while trying to create chimp mananger");
/* 168 */ return null;
/* */ }
/* */ try
/* */ {
/* 172 */ Thread.sleep(1000L);
/* */ } catch (InterruptedException e) {
/* 174 */ LOG.log(Level.SEVERE, "Unable to sleep", e);
/* */ }
/* */ Socket monkeySocket;
/* */ try
/* */ {
/* 179 */ monkeySocket = new Socket(addr, port);
/* */ } catch (IOException e) {
/* 181 */ LOG.log(Level.FINE, "Unable to connect socket", e);
/* 182 */ success = false; }
/* 183 */ continue;
/* */
/* */ try
/* */ {
/* 187 */ mm = new ChimpManager(monkeySocket);
/* */ } catch (IOException e) {
/* 189 */ LOG.log(Level.SEVERE, "Unable to open writer and reader to socket"); }
/* 190 */ continue;
/* */
/* */ try
/* */ {
/* 194 */ mm.wake();
/* */ } catch (IOException e) {
/* 196 */ LOG.log(Level.FINE, "Unable to wake up device", e);
/* 197 */ success = false; }
/* 198 */ continue;
/* */
/* 200 */ success = true;
/* */ }
/* */
/* 203 */ return mm;
/* */ }
~~~
这个方法比较长,但大体做的事情如下:
- 通过调用ddmlib的device类里面的createForward方法来把主机pc端本地的端口转发给目标机器端的monkey监听端口,这样子做的好处是我们通过直接连接主机pc端的转发端口发送命令就会等同于通过网络连接上目标机器的monkey监听端口来发送monkey命令
- 调用executeAsyncCommand方法发送异步adb shell命令 “monkey -port"到目标机器开启monkey并监听以上描述的端口
- 创建连接到主机pc对应目标设备monkey监听端口的monkeySocket
- 把该monkeySocket传递到本章节开头说的ChimpManager构造函数对ChimpManager进行实例化
分析到这里我们可以看到monkey已经在目标机器起来了,那么我们就需要去分析MonkeyRunner是如何发送monkey命令过去控制设备的了。这里我们会以典型的press这个方法作为例子来进行阐述。
我们先看AdbChimpDevice里面的press方法:
~~~
/* */ public void press(String keyName, TouchPressType type)
/* */ {
/* */ try
/* */ {
/* 326 */ switch (3.$SwitchMap$com$android$chimpchat$core$TouchPressType[type.ordinal()]) {
/* */ case 1:
/* 328 */ this.manager.press(keyName);
/* 329 */ break;
/* */ case 2:
/* 331 */ this.manager.keyDown(keyName);
/* 332 */ break;
/* */ case 3:
/* 334 */ this.manager.keyUp(keyName);
/* */ }
/* */ }
/* */ catch (IOException e) {
/* 338 */ LOG.log(Level.SEVERE, "Error sending press event: " + keyName + " " + type, e);
/* */ }
/* */ }
~~~
方法很简单,就是根据不同的按下类型来调用ChimpManager中不同的press的方法,我们这里假设用户按下的是 DOWN_AND_UP这个类型,也就是说调用的是ChimpMananer里面的press方法:
~~~
/* */ public boolean press(String name)
/* */ throws IOException
/* */ {
/* 135 */ return sendMonkeyEvent("press " + name);
/* */ }
~~~
跟着调用sendMonkeyEvent:
~~~
/* */ private boolean sendMonkeyEvent(String command)
/* */ throws IOException
/* */ {
/* 234 */ synchronized (this) {
/* 235 */ String monkeyResponse = sendMonkeyEventAndGetResponse(command);
/* 236 */ return parseResponseForSuccess(monkeyResponse);
/* */ }
/* */ }
~~~
跟着调用sendMonkeyEventAndGetResponse方法:
~~~
/* */ private String sendMonkeyEventAndGetResponse(String command)
/* */ throws IOException
/* */ {
/* 182 */ command = command.trim();
/* 183 */ LOG.info("Monkey Command: " + command + ".");
/* */
/* */
/* 186 */ this.monkeyWriter.write(command + "\n");
/* 187 */ this.monkeyWriter.flush();
/* 188 */ return this.monkeyReader.readLine();
/* */ }
~~~
以上这几个方法都是在ChimpManager这个类里面的成员方法。从最后这个sendMonkeyEventAndGetResponse方法我们可以看到它所做的事情就是用我们前面描述的monkeyWritter和monkeyReader这两个成员变量往主机pc这边的终会转发给目标机器monkey那个端口(其实就是上面的monkeySocket)进行读写操作。
## 3. 发送adb协议请求
请查看《[谁动了我的截图?--Monkeyrunner takeSnapshot方法源码跟踪分析](http://blog.csdn.net/zhubaitian/article/details/40262831)》
## 4. 发送adb shell命令
通过上一篇文章《[谁动了我的截图?--Monkeyrunner takeSnapshot方法源码跟踪分析](http://blog.csdn.net/zhubaitian/article/details/40262831)》的分析,我们知道MonkeyRunner分发不同的设备控制信息是在ChimpChat库的AdbChimpDevice这个类里面进行的。所以这里我就不会从头开始分析我们是怎么进入到这个类里面的了,大家不清楚的请先查看上一篇投石问路的文章再返回来看本文。
这里我们尝试以getSystemProperty这个稍微复杂点的方法为例子分析下MonkeyRunner是真么通过adb shell发送命令的,我们首先定位到AdbChimpDevice的该方法:
~~~
/* */ public String getSystemProperty(String key)
/* */ {
/* 224 */ return this.device.getProperty(key);
/* */ }
~~~
这里的device成员函数指的就是ddmlib库里面的Device这个类(请查看上一篇文章),那么我们进去该类看下getProperty这个方法:
~~~
/* */ public String getProperty(String name)
/* */ {
/* 379 */ return (String)this.mProperties.get(name);
/* */ }
~~~
该方法直接使用mProperties这个Device类的成员变量的get方法根据property的名字获得返回值,从定义可以看出这是个map:
~~~
/* 65 */ private final Map<String, String> mProperties = new HashMap();
~~~
且这个map是在初始化Device实例之前就已经定义好的了,因为其构造函数并没有代码提及,但是我们可以看到Device类里面有一个函数专门往这个map里面添加property:
~~~
/* */ void addProperty(String label, String value) {
/* 779 */ this.mProperties.put(label, value);
/* */ }
~~~
那么这个addProperty又是在哪里被调用了呢?一番查看后发现是在ddmlib里面的GetPropertyReceiver这个类里面的processNewLines这个方法:
~~~
/* */ public void processNewLines(String[] lines)
/* */ {
/* 49 */ for (String line : lines) {
/* 50 */ if ((!line.isEmpty()) && (!line.startsWith("#")))
/* */ {
/* */
/* */
/* 54 */ Matcher m = GETPROP_PATTERN.matcher(line);
/* 55 */ if (m.matches()) {
/* 56 */ String label = m.group(1);
/* 57 */ String value = m.group(2);
/* */
/* 59 */ if (!label.isEmpty()) {
/* 60 */ this.mDevice.addProperty(label, value);
/* */ }
/* */ }
/* */ }
/* */ }
/* */ }
~~~
给这个map增加所有property的地方是知道了,但是问题是什么时候增加呢?这里我们先卖个关子。
继续之前我们先要了解下ddmlib这个库里面的DeviceMonitor这个类,这个类会启动一个线程来监控所有连接到主机的设备的状态。
~~~
/* */ boolean start()
/* */ {
/* 715 */ if ((this.mAdbOsLocation != null) && (sAdbServerPort != 0) && ((!this.mVersionCheck) || (!startAdb()))) {
/* 716 */ return false;
/* */ }
/* */
/* 719 */ this.mStarted = true;
/* */
/* */
/* 722 */ this.mDeviceMonitor = new DeviceMonitor(this);
/* 723 */ this.mDeviceMonitor.start();
/* */
/* 725 */ return true;
/* */ }
~~~
线程的启动是在我们之前见过的AdbDebugBridge里面,一旦adb启动,就会去调用构造函数去初始化DeviceMonitor实例,并调用实例的上面这个start方法来启动一个线程。
~~~
/* */ boolean start()
/* */ {
/* 715 */ if ((this.mAdbOsLocation != null) && (sAdbServerPort != 0) && ((!this.mVersionCheck) || (!startAdb()))) {
/* 716 */ return false;
/* */ }
/* */
/* 719 */ this.mStarted = true;
/* */
/* */
/* 722 */ this.mDeviceMonitor = new DeviceMonitor(this);
/* 723 */ this.mDeviceMonitor.start();
/* */
/* 725 */ return true;
/* */ }
~~~
该线程会进行一个无限循环来检测设备的变动。
~~~
private void deviceMonitorLoop()
/* */ {
/* */ do
/* */ {
/* */ try
/* */ {
/* 161 */ if (this.mMainAdbConnection == null) {
/* 162 */ Log.d("DeviceMonitor", "Opening adb connection");
/* 163 */ this.mMainAdbConnection = openAdbConnection();
/* 164 */ if (this.mMainAdbConnection == null) {
/* 165 */ this.mConnectionAttempt += 1;
/* 166 */ Log.e("DeviceMonitor", "Connection attempts: " + this.mConnectionAttempt);
/* 167 */ if (this.mConnectionAttempt > 10) {
/* 168 */ if (!this.mServer.startAdb()) {
/* 169 */ this.mRestartAttemptCount += 1;
/* 170 */ Log.e("DeviceMonitor", "adb restart attempts: " + this.mRestartAttemptCount);
/* */ }
/* */ else {
/* 173 */ this.mRestartAttemptCount = 0;
/* */ }
/* */ }
/* 176 */ waitABit();
/* */ } else {
/* 178 */ Log.d("DeviceMonitor", "Connected to adb for device monitoring");
/* 179 */ this.mConnectionAttempt = 0;
/* */ }
/* */ }
/* */
/* 183 */ if ((this.mMainAdbConnection != null) && (!this.mMonitoring)) {
/* 184 */ this.mMonitoring = sendDeviceListMonitoringRequest();
/* */ }
/* */
/* 187 */ if (this.mMonitoring)
/* */ {
/* 189 */ int length = readLength(this.mMainAdbConnection, this.mLengthBuffer);
/* */
/* 191 */ if (length >= 0)
/* */ {
/* 193 */ processIncomingDeviceData(length);
/* */
/* */
/* 196 */ this.mInitialDeviceListDone = true;
/* */ }
/* */ }
/* */ }
/* */ catch (AsynchronousCloseException ace) {}catch (TimeoutException ioe)
/* */ {
/* 202 */ handleExpectionInMonitorLoop(ioe);
/* */ } catch (IOException ioe) {
/* 204 */ handleExpectionInMonitorLoop(ioe);
/* */ }
/* 206 */ } while (!this.mQuit);
/* */ }
~~~
一旦发现设备有变动,该循环会立刻调用processIncomingDeviceData这个方法来更新设备信息
~~~
/* */ private void processIncomingDeviceData(int length) throws IOException
/* */ {
/* 298 */ ArrayList<Device> list = new ArrayList();
/* */
/* 300 */ if (length > 0) {
/* 301 */ byte[] buffer = new byte[length];
/* 302 */ String result = read(this.mMainAdbConnection, buffer);
/* */
/* 304 */ String[] devices = result.split("\n");
/* */
/* 306 */ for (String d : devices) {
/* 307 */ String[] param = d.split("\t");
/* 308 */ if (param.length == 2)
/* */ {
/* 310 */ Device device = new Device(this, param[0], IDevice.DeviceState.getState(param[1]));
/* */
/* */
/* */
/* 314 */ list.add(device);
/* */ }
/* */ }
/* */ }
/* */
/* */
/* 320 */ updateDevices(list);
/* */ }
~~~
该方法首先会取得所有的device列表(类似"adb devices -l"命令获得所有device列表),然后调用updateDevices这个方法来对所有设备信息进行一次更新:
~~~
private void updateDevices(ArrayList<Device> newList)
/* */ {
/* 329 */ synchronized ()
/* */ {
/* */
/* */
/* 333 */ ArrayList<Device> devicesToQuery = new ArrayList();
/* 334 */ synchronized (this.mDevices)
/* */ {
/* */
/* */
/* */
/* */
/* */
/* */
/* */
/* */
/* 344 */ for (int d = 0; d < this.mDevices.size();) {
/* 345 */ Device device = (Device)this.mDevices.get(d);
/* */
/* */
/* 348 */ int count = newList.size();
/* 349 */ boolean foundMatch = false;
/* 350 */ for (int dd = 0; dd < count; dd++) {
/* 351 */ Device newDevice = (Device)newList.get(dd);
/* */
/* 353 */ if (newDevice.getSerialNumber().equals(device.getSerialNumber())) {
/* 354 */ foundMatch = true;
/* */
/* */
/* 357 */ if (device.getState() != newDevice.getState()) {
/* 358 */ device.setState(newDevice.getState());
/* 359 */ device.update(1);
/* */
/* */
/* */
/* 363 */ if (device.isOnline()) {
/* 364 */ if ((AndroidDebugBridge.getClientSupport()) &&
/* 365 */ (!startMonitoringDevice(device))) {
/* 366 */ Log.e("DeviceMonitor", "Failed to start monitoring " + device.getSerialNumber());
/* */ }
/* */
/* */
/* */
/* */
/* 372 */ if (device.getPropertyCount() == 0) {
/* 373 */ devicesToQuery.add(device);
/* */ }
/* */ }
/* */ }
/* */
/* */
/* 379 */ newList.remove(dd);
/* 380 */ break;
/* */ }
/* */ }
/* */
/* 384 */ if (!foundMatch)
/* */ {
/* */
/* 387 */ removeDevice(device);
/* 388 */ this.mServer.deviceDisconnected(device);
/* */ }
/* */ else {
/* 391 */ d++;
/* */ }
/* */ }
/* */
/* */
/* */
/* 397 */ for (Device newDevice : newList)
/* */ {
/* 399 */ this.mDevices.add(newDevice);
/* 400 */ this.mServer.deviceConnected(newDevice);
/* */
/* */
/* 403 */ if ((AndroidDebugBridge.getClientSupport()) &&
/* 404 */ (newDevice.isOnline())) {
/* 405 */ startMonitoringDevice(newDevice);
/* */ }
/* */
/* */
/* */
/* 410 */ if (newDevice.isOnline()) {
/* 411 */ devicesToQuery.add(newDevice);
/* */ }
/* */ }
/* */ }
/* */
/* */
/* 417 */ for (Device d : devicesToQuery) {
/* 418 */ queryNewDeviceForInfo(d);
/* */ }
/* */ }
/* 421 */ newList.clear();
/* */ }
~~~
该方法我们关注的是最后面它会循环每个设备,然后调用queryNewDeviceForInfo这个方法去更新每个设备所有的porperty信息。
~~~
/* */ private void queryNewDeviceForInfo(Device device)
/* */ {
/* */ try
/* */ {
/* 446 */ device.executeShellCommand("getprop", new GetPropReceiver(device));
/* */
/* */
/* 449 */ queryNewDeviceForMountingPoint(device, "EXTERNAL_STORAGE");
/* 450 */ queryNewDeviceForMountingPoint(device, "ANDROID_DATA");
/* 451 */ queryNewDeviceForMountingPoint(device, "ANDROID_ROOT");
/* */
/* */
/* 454 */ if (device.isEmulator()) {
/* 455 */ EmulatorConsole console = EmulatorConsole.getConsole(device);
/* 456 */ if (console != null) {
/* 457 */ device.setAvdName(console.getAvdName());
/* 458 */ console.close();
/* */ }
/* */ }
/* */ } catch (TimeoutException e) {
/* 462 */ Log.w("DeviceMonitor", String.format("Connection timeout getting info for device %s", new Object[] { device.getSerialNumber() }));
/* */
/* */ }
/* */ catch (AdbCommandRejectedException e)
/* */ {
/* 467 */ Log.w("DeviceMonitor", String.format("Adb rejected command to get device %1$s info: %2$s", new Object[] { device.getSerialNumber(), e.getMessage() }));
/* */
/* */ }
/* */ catch (ShellCommandUnresponsiveException e)
/* */ {
/* 472 */ Log.w("DeviceMonitor", String.format("Adb shell command took too long returning info for device %s", new Object[] { device.getSerialNumber() }));
/* */
/* */ }
/* */ catch (IOException e)
/* */ {
/* 477 */ Log.w("DeviceMonitor", String.format("IO Error getting info for device %s", new Object[] { device.getSerialNumber() }));
/* */ }
/* */ }
~~~
到了这里我们终于看到了该方法调用了一个ddmlib库的device类里面的executeShellCommand方法来执行‘getprop'这个命令。到目前位置我们达到的目的是知道了getSystemProperty这个MonkeyDevice的api最终确实是通过发送'adb shell getporp‘命令来获得设备属性的。
但这里遗留了两个问题
- 一个是之前提到的GetPropertyReceiver这个类里面的增加property的processNewLines方法是在哪里调用的
- 一个是executeShellCommand究竟是怎么工作的
各位看官不用着急,且看我们往下分析,很快就会水落石出了。我们继续跟踪executeShellCommand这个方法,在我们的例子中其以命令'getprop'和new的GetPropertyReceiver对象实例为参数,最终会调用到Device这个类里面的executeShellCommand这个方法。注意这个GetPropertyReceiver很重要,我们往后会看到。
~~~
/* */ public void executeShellCommand(String command, IShellOutputReceiver receiver, int maxTimeToOutputResponse)
/* */ throws TimeoutException, AdbCommandRejectedException, ShellCommandUnresponsiveException, IOException
/* */ {
/* 618 */ AdbHelper.executeRemoteCommand(AndroidDebugBridge.getSocketAddress(), command, this, receiver, maxTimeToOutputResponse);
/* */ }
~~~
方法中继续把调用直接抛给AdbHelper这个工具类,
~~~
/* */ static void executeRemoteCommand(InetSocketAddress adbSockAddr, String command, IDevice device, IShellOutputReceiver rcvr, long maxTimeToOutputResponse, TimeUnit maxTimeUnits)
/* */ throws TimeoutException, AdbCommandRejectedException, ShellCommandUnresponsiveException, IOException
/* */ {
/* 378 */ long maxTimeToOutputMs = 0L;
/* 379 */ if (maxTimeToOutputResponse > 0L) {
/* 380 */ if (maxTimeUnits == null) {
/* 381 */ throw new NullPointerException("Time unit must not be null for non-zero max.");
/* */ }
/* 383 */ maxTimeToOutputMs = maxTimeUnits.toMillis(maxTimeToOutputResponse);
/* */ }
/* */
/* 386 */ Log.v("ddms", "execute: running " + command);
/* */
/* 388 */ SocketChannel adbChan = null;
/* */ try {
/* 390 */ adbChan = SocketChannel.open(adbSockAddr);
/* 391 */ adbChan.configureBlocking(false);
/* */
/* */
/* */
/* */
/* 396 */ setDevice(adbChan, device);
/* */
/* 398 */ byte[] request = formAdbRequest("shell:" + command);
/* 399 */ write(adbChan, request);
/* */
/* 401 */ AdbResponse resp = readAdbResponse(adbChan, false);
/* 402 */ if (!resp.okay) {
/* 403 */ Log.e("ddms", "ADB rejected shell command (" + command + "): " + resp.message);
/* 404 */ throw new AdbCommandRejectedException(resp.message);
/* */ }
/* */
/* 407 */ byte[] data = new byte['䀀'];
/* 408 */ ByteBuffer buf = ByteBuffer.wrap(data);
/* 409 */ long timeToResponseCount = 0L;
/* */
/* */ for (;;)
/* */ {
/* 413 */ if ((rcvr != null) && (rcvr.isCancelled())) {
/* 414 */ Log.v("ddms", "execute: cancelled");
/* 415 */ break;
/* */ }
/* */
/* 418 */ int count = adbChan.read(buf);
/* 419 */ if (count < 0)
/* */ {
/* 421 */ rcvr.flush();
/* 422 */ Log.v("ddms", "execute '" + command + "' on '" + device + "' : EOF hit. Read: " + count);
/* */
/* 424 */ break; }
/* 425 */ if (count == 0) {
/* */ try {
/* 427 */ int wait = 25;
/* 428 */ timeToResponseCount += wait;
/* 429 */ if ((maxTimeToOutputMs > 0L) && (timeToResponseCount > maxTimeToOutputMs)) {
/* 430 */ throw new ShellCommandUnresponsiveException();
/* */ }
/* 432 */ Thread.sleep(wait);
/* */ }
/* */ catch (InterruptedException ie) {}
/* */ }
/* */ else {
/* 437 */ timeToResponseCount = 0L;
/* */
/* */
/* 440 */ if (rcvr != null) {
/* 441 */ rcvr.addOutput(buf.array(), buf.arrayOffset(), buf.position());
/* */ }
/* 443 */ buf.rewind();
/* */ }
/* */ }
/* */ } finally {
/* 447 */ if (adbChan != null) {
/* 448 */ adbChan.close();
/* */ }
/* 450 */ Log.v("ddms", "execute: returning");
/* */ }
/* */ }
~~~
方法中先创建一个面向adb服务器的socket通道,然后通过发送adb协议请求的'shell:'命令获得一个adb shell然后再把相应的adb shell命令发送到该socket。从这里可以看到,“发送adb shell命令“其实是基于”发送adb协议请求“的,因为在发送命令之前需要先通过组织基于adb协议的请求”shell:“来获得adb shell。对比上一篇文章《[谁动了我的截图?--Monkeyrunner takeSnapshot方法源码跟踪分析](http://blog.csdn.net/zhubaitian/article/details/40262831)》我们可以看到“发送adb协议请求”跟“发送adb shell命名”的最大区别就是:
- 发送adb协议请求:不需要初始化adb shell,直接通过构造基于adb协议的请求把命令发送出去给adb服务器。
- 发送adb shell命令:每个命令都需要先发送“adb协议请求”的“shell:”来先建立一个adb shell,然后才能够发送命令到adb服务器,再由adb服务器转发到设备端的adb守护进程或者服务。
发送完请求后最终会调用rcvr.addOutput(buf.array(),buf.arrayOffset(), buf.position())这个方法,这里的rcvr就是通过参数传进来的我们上面提到的很重要的那个GetPropertyReceiver,那么我们去看下该类下面的addOutput究竟是怎么处理返回信息的,这里要查看的是GetPropertyReceiver父类MultiLineReceiver类的成员函数addOutPut:
~~~
/* */ public final void addOutput(byte[] data, int offset, int length)
/* */ {
/* 53 */ if (!isCancelled()) {
/* 54 */ String s = new String(data, offset, length, Charsets.UTF_8);
/* */
/* */
/* */
/* 58 */ if (this.mUnfinishedLine != null) {
/* 59 */ s = this.mUnfinishedLine + s;
/* 60 */ this.mUnfinishedLine = null;
/* */ }
/* */
/* */
/* 64 */ this.mArray.clear();
/* 65 */ int start = 0;
/* */ for (;;) {
/* 67 */ int index = s.indexOf("\r\n", start);
/* */
/* */
/* */
/* 71 */ if (index == -1) {
/* 72 */ this.mUnfinishedLine = s.substring(start);
/* 73 */ break;
/* */ }
/* */
/* */
/* */
/* 78 */ String line = s.substring(start, index);
/* 79 */ if (this.mTrimLines) {
/* 80 */ line = line.trim();
/* */ }
/* 82 */ this.mArray.add(line);
/* */
/* */
/* 85 */ start = index + 2;
/* */ }
/* */
/* 88 */ if (!this.mArray.isEmpty())
/* */ {
/* */
/* 91 */ String[] lines = (String[])this.mArray.toArray(new String[this.mArray.size()]);
/* */
/* */
/* 94 */ processNewLines(lines);
/* */ }
/* */ }
/* */ }
~~~
这个函数所作的事情就是把'adb shell getprop‘返回的所有信息一行一行的进行处理,注意最终处理的函数就是processNewLines。还记得这个函数吧?这个就是我们上面提到的GetPropertyReceiver这个类中用来往mProperties这个map增加property的了。迄今为止我们算是把以上留下了两个疑问给解决完了
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- 前言
- MonkeyRunner创建一个Note的实例
- MonkeyRunner在Windows下的Eclipse开发环境搭建步骤(兼解决网上Jython配置出错的问题)
- MonkenRunner通过HierarchyViewer定位控件的方法和建议(Appium/UIAutomator/Robotium姊妹篇)
- MonkeyDevcie API 实践全记录
- MonkeyImage API 实践全记录
- EasyMonkeyDevice vs MonkeyDevice&amp;HierarchyViewer API Mapping Matrix
- adb概览及协议参考
- MonkeyRunner源码分析之-谁动了我的截图?
- MonkeyRunner源码分析之与Android设备通讯方式
- MonkeyRunner源码分析之启动
- Monkey源码分析之运行流程
- Monkey源码分析之事件源
- Monkey源码分析番外篇之WindowManager注入事件如何跳出进程间安全限制
- Monkey源码分析番外篇之Android注入事件的三种方法比较
- Monkey源码分析之事件注入
- monkey源码分析之事件注入方法变化
- MonkeyRunner源码分析之工作原理图
- Android自动化测试框架新书:&lt;&lt;MonnkeyRunner实现原理剖析&gt;&gt;交流