Android自动化预备 (上)

一.学习Android自动化需要哪些能力,否则后续学习起来会吃力

1. 在测试行业带过一年以上(才有测试思想,测试思维的方向,一些学习中专业的词语才可以理解)

2. 独立编写Java或者C++等项目一年以上(对脚本,对源码的理解,对KPI的理解)

3. 熟练掌握具备业界开源自动化的工具并用在工作中(对开源的了解,如monkey,monkeyrunner(google自家做的),robotium(开源的,基于控件的自动化框架),UiAutomator(2013年,4.1以上的自动化框架))(才能直接进入代码学习,理解)UiAutomator支持4.1

4. 用python的脚本语言的了解

5. 会简单的Linux命令(底层包装在Linux中,进程方面的命令,adb shell中的指令),会android简单的开发,会Eclipse的开发

二.面试中通常会被问道自动化相关方面的经验与基础

BAT是:百度,阿里,腾讯的简称,经常的面试题:进程处理,app自动化,批处理调用脚本,监控进程的方法,线程阻塞的处理

如:腾讯笔试题目:

1.如何测试分布式ATM机?这个是针对一些大系统的题目,集群部署

2.使用一个数组实现三个堆栈,要求有效得使用数组的存储空间,可以使用其他数据结构.涉及到一个测试人员对整个系统的了

    解,包括前端的负载均衡到主备应用等

3.编写一个脚本,统计log文件中首个单词出现的次数,如:error:xxx/warning:xxx

阿里巴巴2面的部分面试题:

1.robotium源码架构实现

2.robotium的工具怎么根据id找到脚本id(脚本id和架构映射原理)?

3.mongkeyrunner和Uiautomator原理

4.怎么做电量测试(如何做到app进程级别)

5.影响手机电量因素列举一下

6.稳定性和压力怎么做?

7.robotium webview怎么实现

8.怎么让系统不休眠:1.通过powermanager来精细控制,具体函数请指出2.在view中设置PLAG_KEEP_SCREEN_ON

百度1面题目:

1.我测试他们客户端,日文输入法我们不认识日文,怎么用自动化解决

2.不用变量交换两个数

3.调脚本怎么并行和串行调bat批处理

4.怎么解决控件和点触实现屏自动化

5.用户装了百度客户端,你怎么实现自动化?

6.我们自动化要验证功能准确性还有性能,UI界面.一个自动化脚本验证多个,难道一个自动化只验证一条用例?

7.怎么实现监控内存,在esliose显示pss是什么意思?

8.ANS出现怎么解决?

9.进程和线程,handler 和runnable 还有广播和服务

10.robotium和mongkeyrunner的区别

11.Radiobox 和checkbox自动化脚本怎能么复用(考的是正交法)

12.GC原理

13.android性能自动化怎么做

14.电量对比测试

15.android安全自动化怎么做

16.有个客户装了百度客户端,怎么规划测试版本自动化

17.UI线程阻塞,怎么复现查log

三.业界自动化框架:

1.基于坐标:mongkeyrunner,北京播思自研工具

2.基于随机流的单元测试:CTS,monkey(压力测试)

3.基于元素查找图形对比:seetest(收费),I-test     seetest:http://experitest.com

4.腾讯:bita.qq.com平台(登录后可以进行一些定制或者压力,试用测试等),GT.tencent.com(测试游戏,帧率,解码率,需要手机root权限)

5.百度云,itestin:itestin.cn(手游测试),阿里巴巴TMTS

6.基于控件信息:Robutium+Junit4框架(基于控件,app),东舟Smart-Robot,美国风河公司的:wind test management

7.NativeDriver和Selenium(被UiAutomator取代),比较新的技术

ADB  (Android Debug Bridge调试桥接)

adb devices:查看连接的设备

1.是一个客户端,是一个服务器(运行后台,端口:TCP port:5037[如果adb不能启用时可以检查一下端口是否被占用]),还是一个守护进程,能够使的运行的实例运行在后台

  能在SDK中的platform-tools中找到:adb.exe(用该路径配置环境变量:path下添加到最后即可,用;号隔开)

如:D:\SDK\sdk\platform-tools

环境配置:

http://hi.baidu.com/szy123618/item/48be8134cdfcd5c3382ffaa1

2.基本命令:

  adb install <apkpath>:安装程序

adb push <PC path> < /data/local/tmp>:从PC拷贝文件到手机 adb push 文件路径 /data/local/tmp

adb pull:从手机拷贝文件到PC

kill -server:要进入adb shell (显示$为未root,显示#为有root权限)

在android 4.4以上支持adb shell screenrecord <save path>

如:adb shell screenrecord /sdcard/demo.mp4

2.AndroidDebugBridge 源码:

debug内部类:

Path:SDK/tools/lib/ddmslib.jar      Android DebugBridge 源码位置

问:如何判定device设备是否连接

问题参考:http://stackoverflow.com/questions/17381324/how-to-tell-if-android-device-detected-by-adb

解答中涉及AndroidDebugBridge的类,在google中搜索AndroidDebugBridge如下:

http://code.google.com/p/android-screen-monitor/source/browse/trunk/java/AndroidScreenMonitor/src/com/android/ddmlib/AndroidDebugBridge.java?r=16

起源码如下:

其中:

publicstaticAndroidDebugBridge createBridge(String osLocation,boolean forceNewBridge){

        synchronized(sLock)

不论是否促在ADB连接,都会重新再启动一个adb连接

publicstaticAndroidDebugBridge createBridge(){

        synchronized(sLock)

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/*  * Copyright (C) 2007 The Android Open Source Project  *  * Licensed under the Apache License, Version 2.0 (the "License");  * you may not use this file except in compliance with the License.  * You may obtain a copy of the License at  *  *      http://www.apache.org/licenses/LICENSE-2.0  *  * Unless required by applicable law or agreed to in writing, software  * distributed under the License is distributed on an "AS IS" BASIS,  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  * See the License for the specific language governing permissions and  * limitations under the License.  */ package com.android.ddmlib; import com.android.ddmlib.Log.LogLevel; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.lang.Thread.State; import java.net.InetAddress; import java.net.InetSocketAddress; import java.net.UnknownHostException; import java.security.InvalidParameterException; import java.util.ArrayList; import java.util.regex.Matcher; import java.util.regex.Pattern; /**  * A connection to the host-side android debug bridge (adb)  * <p/>This is the central point to communicate with any devices, emulators, or the applications  * running on them.  * <p/><b>{@link #init(boolean)} must be called before anything is done.</b>  */ publicfinalclassAndroidDebugBridge{     /*      * Minimum and maximum version of adb supported. This correspond to      * ADB_SERVER_VERSION found in //device/tools/adb/adb.h      */   privatefinalstaticint ADB_VERSION_MICRO_MIN =20;     privatefinalstaticint ADB_VERSION_MICRO_MAX =-1;     privatefinalstaticPattern sAdbVersion =Pattern.compile(             "^.*(\\d+)\\.(\\d+)\\.(\\d+)$");//$NON-NLS-1$     privatefinalstaticString ADB ="adb";//$NON-NLS-1$     privatefinalstaticString DDMS ="ddms";//$NON-NLS-1$     // Where to find the ADB bridge.     finalstaticString ADB_HOST ="127.0.0.1";//$NON-NLS-1$     finalstaticint ADB_PORT =5037;     staticInetAddress sHostAddr;     staticInetSocketAddress sSocketAddr;     static{         // built-in local address/port for ADB.         try{             sHostAddr =InetAddress.getByName(ADB_HOST);             sSocketAddr =newInetSocketAddress(sHostAddr, ADB_PORT);         }catch(UnknownHostException e){         }     }     privatestaticAndroidDebugBridge sThis;     privatestaticboolean sClientSupport;     /** Full path to adb. */     privateString mAdbOsLocation =null;     privateboolean mVersionCheck;     privateboolean mStarted =false;     privateDeviceMonitor mDeviceMonitor;     privatefinalstaticArrayList<IDebugBridgeChangeListener> sBridgeListeners =         newArrayList<IDebugBridgeChangeListener>();     privatefinalstaticArrayList<IDeviceChangeListener> sDeviceListeners =         newArrayList<IDeviceChangeListener>();     privatefinalstaticArrayList<IClientChangeListener> sClientListeners =         newArrayList<IClientChangeListener>();     // lock object for synchronization     privatestaticfinalObject sLock = sBridgeListeners;     /**      * Classes which implement this interface provide a method that deals      * with {@link AndroidDebugBridge} changes.      */     public interface IDebugBridgeChangeListener{         /**          * Sent when a new {@link AndroidDebugBridge} is connected.          * <p/>          * This is sent from a non UI thread.          * @param bridge the new {@link AndroidDebugBridge} object.          */         publicvoid bridgeChanged(AndroidDebugBridge bridge);     }     /**      * Classes which implement this interface provide methods that deal      * with {@link IDevice} addition, deletion, and changes.      */     public interface IDeviceChangeListener{         /**          * Sent when the a device is connected to the {@link AndroidDebugBridge}.          * <p/>          * This is sent from a non UI thread.          * @param device the new device.          */         publicvoid deviceConnected(IDevice device);         /**          * Sent when the a device is connected to the {@link AndroidDebugBridge}.          * <p/>          * This is sent from a non UI thread.          * @param device the new device.          */         publicvoid deviceDisconnected(IDevice device);         /**          * Sent when a device data changed, or when clients are started/terminated on the device.          * <p/>          * This is sent from a non UI thread.          * @param device the device that was updated.          * @param changeMask the mask describing what changed. It can contain any of the following          * values: {@link IDevice#CHANGE_BUILD_INFO}, {@link IDevice#CHANGE_STATE},          * {@link IDevice#CHANGE_CLIENT_LIST}          */         publicvoid deviceChanged(IDevice device,int changeMask);     }     /**      * Classes which implement this interface provide methods that deal      * with {@link Client}  changes.      */     public interface IClientChangeListener{         /**          * Sent when an existing client information changed.          * <p/>          * This is sent from a non UI thread.          * @param client the updated client.          * @param changeMask the bit mask describing the changed properties. It can contain          * any of the following values: {@link Client#CHANGE_INFO},          * {@link Client#CHANGE_DEBUGGER_STATUS}, {@link Client#CHANGE_THREAD_MODE},          * {@link Client#CHANGE_THREAD_DATA}, {@link Client#CHANGE_HEAP_MODE},          * {@link Client#CHANGE_HEAP_DATA}, {@link Client#CHANGE_NATIVE_HEAP_DATA}          */         publicvoid clientChanged(Client client,int changeMask);     }     /**      * Initializes the <code>ddm</code> library.      * <p/>This must be called once <b>before</b> any call to      * {@link #createBridge(String, boolean)}.      * <p>The library can be initialized in 2 ways:      * <ul>      * <li>Mode 1: <var>clientSupport</var> == <code>true</code>.<br>The library monitors the      * devices and the applications running on them. It will connect to each application, as a     * debugger of sort, to be able to interact with them through JDWP packets.</li>    * <li>Mode 2: <var>clientSupport</var> == <code>false</code>.<br>The library only monitors    * devices. The applications are left untouched, letting other tools built on    * <code>ddmlib</code> to connect a debugger to them.</li>      * </ul>      * <p/><b>Only one tool can run in mode 1 at the same time.</b>      * <p/>Note that mode 1 does not prevent debugging of applications running on devices. Mode 1      * lets debuggers connect to <code>ddmlib</code> which acts as a proxy between the debuggers and      * the applications to debug. See {@link Client#getDebuggerListenPort()}.      * <p/>The preferences of <code>ddmlib</code> should also be initialized with whatever default      * values were changed from the default values.      * <p/>When the application quits, {@link #terminate()} should be called.      * @param clientSupport Indicates whether the library should enable the monitoring and      * interaction with applications running on the devices.      * @see AndroidDebugBridge#createBridge(String, boolean)      * @see DdmPreferences      */     publicstaticvoid init(boolean clientSupport){         sClientSupport = clientSupport;         MonitorThread monitorThread =MonitorThread.createInstance();         monitorThread.start();         HandleHello.register(monitorThread);         HandleAppName.register(monitorThread);         HandleTest.register(monitorThread);         HandleThread.register(monitorThread);         HandleHeap.register(monitorThread);         HandleWait.register(monitorThread);         HandleProfiling.register(monitorThread);     }     /**      * Terminates the ddm library. This must be called upon application termination.      */     publicstaticvoid terminate(){         // kill the monitoring services         if(sThis !=null&& sThis.mDeviceMonitor !=null){             sThis.mDeviceMonitor.stop();             sThis.mDeviceMonitor =null;         }         MonitorThread monitorThread =MonitorThread.getInstance();         if(monitorThread !=null){             monitorThread.quit();         }     }     /**      * Returns whether the ddmlib is setup to support monitoring and interacting with      * {@link Client}s running on the {@link IDevice}s.      */     staticboolean getClientSupport(){         return sClientSupport;     }     /**      * Creates a {@link AndroidDebugBridge} that is not linked to any particular executable.      * <p/>This bridge will expect adb to be running. It will not be able to start/stop/restart      * adb.      * <p/>If a bridge has already been started, it is directly returned with no changes (similar      * to calling {@link #getBridge()}).      * @return a connected bridge.      */     publicstaticAndroidDebugBridge createBridge(){         synchronized(sLock){             if(sThis !=null){                 return sThis;             }             try{                 sThis =newAndroidDebugBridge();                 sThis.start();             }catch(InvalidParameterException e){                 sThis =null;             }             // because the listeners could remove themselves from the list while processing             // their event callback, we make a copy of the list and iterate on it instead of             // the main list.             // This mostly happens when the application quits.             IDebugBridgeChangeListener[] listenersCopy = sBridgeListeners.toArray(                     newIDebugBridgeChangeListener[sBridgeListeners.size()]);             // notify the listeners of the change             for(IDebugBridgeChangeListener listener : listenersCopy){                 // we attempt to catch any exception so that a bad listener doesn't kill our                 // thread                 try{                     listener.bridgeChanged(sThis);                 }catch(Exception e){                     Log.e(DDMS, e);                 }             }             return sThis;         }     }     /**      * Creates a new debug bridge from the location of the command line tool.      * <p/>      * Any existing server will be disconnected, unless the location is the same and      * <code>forceNewBridge</code> is set to false.      * @param osLocation the location of the command line tool 'adb'      * @param forceNewBridge force creation of a new bridge even if one with the same location      * already exists.      * @return a connected bridge.      */     publicstaticAndroidDebugBridge createBridge(String osLocation,boolean forceNewBridge){         synchronized(sLock){             if(sThis !=null){                 if(sThis.mAdbOsLocation !=null&& sThis.mAdbOsLocation.equals(osLocation)&&                         forceNewBridge ==false){                     return sThis;                 }else{                     // stop the current server                     sThis.stop();                 }             }             try{                 sThis =newAndroidDebugBridge(osLocation);                 sThis.start();             }catch(InvalidParameterException e){                 sThis =null;             }             // because the listeners could remove themselves from the list while processing             // their event callback, we make a copy of the list and iterate on it instead of             // the main list.             // This mostly happens when the application quits.             IDebugBridgeChangeListener[] listenersCopy = sBridgeListeners.toArray(                     newIDebugBridgeChangeListener[sBridgeListeners.size()]);             // notify the listeners of the change             for(IDebugBridgeChangeListener listener : listenersCopy){                 // we attempt to catch any exception so that a bad listener doesn't kill our                 // thread                 try{                     listener.bridgeChanged(sThis);                 }catch(Exception e){                     Log.e(DDMS, e);                 }             }             return sThis;         }     }     /**      * Returns the current debug bridge. Can be <code>null</code> if none were created.      */     publicstaticAndroidDebugBridge getBridge(){         return sThis;     }     /**      * Disconnects the current debug bridge, and destroy the object.      * <p/>This also stops the current adb host server.      * <p/>      * A new object will have to be created with {@link #createBridge(String, boolean)}.      */     publicstaticvoid disconnectBridge(){         synchronized(sLock){             if(sThis !=null){                 sThis.stop();                 sThis =null;                 // because the listeners could remove themselves from the list while processing                 // their event callback, we make a copy of the list and iterate on it instead of               // the main list.                 // This mostly happens when the application quits.                 IDebugBridgeChangeListener[] listenersCopy = sBridgeListeners.toArray(                         newIDebugBridgeChangeListener[sBridgeListeners.size()]);                 // notify the listeners.                 for(IDebugBridgeChangeListener listener : listenersCopy){                     // we attempt to catch any exception so that a bad listener doesn't kill our                     // thread                     try{                       listener.bridgeChanged(sThis);                     }catch(Exception e){                         Log.e(DDMS, e);                     }                 }             }         }     }     /**      * Adds the listener to the collection of listeners who will be notified when a new      * {@link AndroidDebugBridge} is connected, by sending it one of the messages defined      * in the {@link IDebugBridgeChangeListener} interface.      * @param listener The listener which should be notified.      */     publicstaticvoid addDebugBridgeChangeListener(IDebugBridgeChangeListener listener){         synchronized(sLock){             if(sBridgeListeners.contains(listener)==false){               sBridgeListeners.add(listener);                 if(sThis !=null){                     // we attempt to catch any exception so that a bad listener doesn't kill our                     // thread                     try{                         listener.bridgeChanged(sThis);                     }catch(Exception e){                         Log.e(DDMS, e);                     }                 }             }         }     }     /**      * Removes the listener from the collection of listeners who will be notified when a new      * {@link AndroidDebugBridge} is started.      * @param listener The listener which should no longer be notified.      */     publicstaticvoid removeDebugBridgeChangeListener(IDebugBridgeChangeListener listener){         synchronized(sLock){             sBridgeListeners.remove(listener);         }     }     /**      * Adds the listener to the collection of listeners who will be notified when a {@link IDevice}      * is connected, disconnected, or when its properties or its {@link Client} list changed,      * by sending it one of the messages defined in the {@link IDeviceChangeListener} interface.      * @param listener The listener which should be notified.      */     publicstaticvoid addDeviceChangeListener(IDeviceChangeListener listener){         synchronized(sLock){             if(sDeviceListeners.contains(listener)==false){                 sDeviceListeners.add(listener);             }         }     }     /**      * Removes the listener from the collection of listeners who will be notified when a      * {@link IDevice} is connected, disconnected, or when its properties or its {@link Client}      * list changed.      * @param listener The listener which should no longer be notified.      */     publicstaticvoid removeDeviceChangeListener(IDeviceChangeListener listener){         synchronized(sLock){             sDeviceListeners.remove(listener);         }     }     /**      * Adds the listener to the collection of listeners who will be notified when a {@link Client}      * property changed, by sending it one of the messages defined in the      * {@link IClientChangeListener} interface.      * @param listener The listener which should be notified.      */     publicstaticvoid addClientChangeListener(IClientChangeListener listener){         synchronized(sLock){             if(sClientListeners.contains(listener)==false){                 sClientListeners.add(listener);             }         }     }     /**      * Removes the listener from the collection of listeners who will be notified when a      * {@link Client} property changed.      * @param listener The listener which should no longer be notified.      */     publicstaticvoid removeClientChangeListener(IClientChangeListener listener){         synchronized(sLock){             sClientListeners.remove(listener);         }     }     /**      * Returns the devices.      * @see #hasInitialDeviceList()      */     publicIDevice[] getDevices(){         synchronized(sLock){             if(mDeviceMonitor !=null){                 return mDeviceMonitor.getDevices();             }         }         returnnewIDevice[0];     }     /**      * Returns whether the bridge has acquired the initial list from adb after being created.      * <p/>Calling {@link #getDevices()} right after {@link #createBridge(String, boolean)} will      * generally result in an empty list. This is due to the internal asynchronous communication      * mechanism with <code>adb</code> that does not guarantee that the {@link IDevice} list has been      * built before the call to {@link #getDevices()}.      * <p/>The recommended way to get the list of {@link IDevice} objects is to create a      * {@link IDeviceChangeListener} object.      */     publicboolean hasInitialDeviceList(){         if(mDeviceMonitor !=null){             return mDeviceMonitor.hasInitialDeviceList();         }         returnfalse;     }     /**      * Sets the client to accept debugger connection on the custom "Selected debug port".      * @param selectedClient the client. Can be null.      */     publicvoid setSelectedClient(Client selectedClient){         MonitorThread monitorThread =MonitorThread.getInstance();         if(monitorThread !=null){             monitorThread.setSelectedClient(selectedClient);         }     }     /**      * Returns whether the {@link AndroidDebugBridge} object is still connected to the adb daemon.      */     publicboolean isConnected(){         MonitorThread monitorThread =MonitorThread.getInstance();         if(mDeviceMonitor !=null&& monitorThread !=null){             return mDeviceMonitor.isMonitoring()&& monitorThread.getState()!=State.TERMINATED;         }         returnfalse;     }     /**      * Returns the number of times the {@link AndroidDebugBridge} object attempted to connect      * to the adb daemon.      */     publicint getConnectionAttemptCount(){         if(mDeviceMonitor !=null){             return mDeviceMonitor.getConnectionAttemptCount();         }         return-1;     }     /**      * Returns the number of times the {@link AndroidDebugBridge} object attempted to restart      * the adb daemon.      */     publicint getRestartAttemptCount(){         if(mDeviceMonitor !=null){             return mDeviceMonitor.getRestartAttemptCount();         }         return-1;     }     /**      * Creates a new bridge.      * @param osLocation the location of the command line tool      * @throws InvalidParameterException      */     privateAndroidDebugBridge(String osLocation)throwsInvalidParameterException{         if(osLocation ==null|| osLocation.length()==0){             thrownewInvalidParameterException();         }         mAdbOsLocation = osLocation;         checkAdbVersion();     }     /**      * Creates a new bridge not linked to any particular adb executable.      */     privateAndroidDebugBridge(){     }     /**      * Queries adb for its version number and checks it against {@link #MIN_VERSION_NUMBER} and      * {@link #MAX_VERSION_NUMBER}      */     privatevoid checkAdbVersion(){         // default is bad check         mVersionCheck =false;         if(mAdbOsLocation ==null){             return;         }         try{             String[] command =newString[2];             command[0]= mAdbOsLocation;             command[1]="version";//$NON-NLS-1$             Log.d(DDMS,String.format("Checking '%1$s version'", mAdbOsLocation));//$NON-NLS-1$             Process process =Runtime.getRuntime().exec(command);             ArrayList<String> errorOutput =newArrayList<String>();             ArrayList<String> stdOutput =newArrayList<String>();             int status = grabProcessOutput(process, errorOutput, stdOutput,                     true/* waitForReaders */);             if(status !=0){                 StringBuilder builder =newStringBuilder("'adb version' failed!");//$NON-NLS-1$                 for(String error : errorOutput){                     builder.append('\n');                     builder.append(error);                 }                 Log.logAndDisplay(LogLevel.ERROR,"adb", builder.toString());             }             // check both stdout and stderr             boolean versionFound =false;             for(String line : stdOutput){                 versionFound = scanVersionLine(line);                 if(versionFound){                     break;                 }             }             if(!versionFound){                 for(String line : errorOutput){                     versionFound = scanVersionLine(line);                     if(versionFound){                         break;                     }                 }             }             if(!versionFound){                 // if we get here, we failed to parse the output.                 Log.logAndDisplay(LogLevel.ERROR, ADB,                         "Failed to parse the output of 'adb version'");//$NON-NLS-1$             }         }catch(IOException e){             Log.logAndDisplay(LogLevel.ERROR, ADB,                     "Failed to get the adb version: "+ e.getMessage());//$NON-NLS-1$         }catch(InterruptedException e){         }finally{         }     }     /**      * Scans a line resulting from 'adb version' for a potential version number.      * <p/>      * If a version number is found, it checks the version number against what is expected      * by this version of ddms.      * <p/>      * Returns true when a version number has been found so that we can stop scanning,      * whether the version number is in the acceptable range or not.      *      * @param line The line to scan.      * @return True if a version number was found (whether it is acceptable or not).      */     privateboolean scanVersionLine(String line){         if(line !=null){             Matcher matcher = sAdbVersion.matcher(line);             if(matcher.matches()){                 int majorVersion =Integer.parseInt(matcher.group(1));                 int minorVersion =Integer.parseInt(matcher.group(2));                 int microVersion =Integer.parseInt(matcher.group(3));                 // check only the micro version for now.                 if(microVersion < ADB_VERSION_MICRO_MIN){                     String message =String.format(                             "Required minimum version of adb: %1$d.%2$d.%3$d."//$NON-NLS-1$                             +"Current version is %1$d.%2$d.%4$d",//$NON-NLS-1$                             majorVersion, minorVersion, ADB_VERSION_MICRO_MIN,                             microVersion);                     Log.logAndDisplay(LogLevel.ERROR, ADB, message);                 }elseif(ADB_VERSION_MICRO_MAX !=-1&&                         microVersion > ADB_VERSION_MICRO_MAX){                     String message =String.format(                             "Required maximum version of adb: %1$d.%2$d.%3$d."//$NON-NLS-1$                             +"Current version is %1$d.%2$d.%4$d",//$NON-NLS-1$                             majorVersion, minorVersion, ADB_VERSION_MICRO_MAX,                             microVersion);                     Log.logAndDisplay(LogLevel.ERROR, ADB, message);                 }else{                     mVersionCheck =true;                 }                 returntrue;             }         }         returnfalse;     }     /**      * Starts the debug bridge.      * @return true if success.      */     boolean start(){         if(mAdbOsLocation !=null&&(mVersionCheck ==false|| startAdb()==false)){             returnfalse;         }         mStarted =true;         // now that the bridge is connected, we start the underlying services.         mDeviceMonitor =newDeviceMonitor(this);         mDeviceMonitor.start();         returntrue;     }    /**      * Kills the debug bridge, and the adb host server.      * @return true if success      */     boolean stop(){         // if we haven't started we return false;         if(mStarted ==false){             returnfalse;         }         // kill the monitoring services         mDeviceMonitor.stop();         mDeviceMonitor =null;         if(stopAdb()==false){             returnfalse;         }         mStarted =false;         returntrue;     }     /**      * Restarts adb, but not the services around it.      * @return true if success.      */     publicboolean restart(){         if(mAdbOsLocation ==null){             Log.e(ADB,                     "Cannot restart adb when AndroidDebugBridge is created without the location of adb.");//$NON-NLS-1$             returnfalse;         }         if(mVersionCheck ==false){             Log.logAndDisplay(LogLevel.ERROR, ADB,                     "Attempting to restart adb, but version check failed!");//$NON-NLS-1$             returnfalse;         }         synchronized(this){             stopAdb();             boolean restart = startAdb();             if(restart && mDeviceMonitor ==null){                 mDeviceMonitor =newDeviceMonitor(this);                 mDeviceMonitor.start();             }             return restart;         }     }     /**      * Notify the listener of a new {@link IDevice}.      * <p/>      * The notification of the listeners is done in a synchronized block. It is important to      * expect the listeners to potentially access various methods of {@link IDevice} as well as      * {@link #getDevices()} which use internal locks.      * <p/>      * For this reason, any call to this method from a method of {@link DeviceMonitor},      * {@link IDevice} which is also inside a synchronized block, should first synchronize on      * the {@link AndroidDebugBridge} lock. Access to this lock is done through {@link #getLock()}.      * @param device the new <code>IDevice</code>.      * @see #getLock()      */     void deviceConnected(IDevice device){         // because the listeners could remove themselves from the list while processing         // their event callback, we make a copy of the list and iterate on it instead of         // the main list.         // This mostly happens when the application quits.         IDeviceChangeListener[] listenersCopy =null;         synchronized(sLock){             listenersCopy = sDeviceListeners.toArray(                     newIDeviceChangeListener[sDeviceListeners.size()]);         }         // Notify the listeners         for(IDeviceChangeListener listener : listenersCopy){             // we attempt to catch any exception so that a bad listener doesn't kill our             // thread             try{                 listener.deviceConnected(device);             }catch(Exception e){                 Log.e(DDMS, e);             }         }     }     /**      * Notify the listener of a disconnected {@link IDevice}.      * <p/>      * The notification of the listeners is done in a synchronized block. It is important to      * expect the listeners to potentially access various methods of {@link IDevice} as well as      * {@link #getDevices()} which use internal locks.      * <p/>      * For this reason, any call to this method from a method of {@link DeviceMonitor},      * {@link IDevice} which is also inside a synchronized block, should first synchronize on      * the {@link AndroidDebugBridge} lock. Access to this lock is done through {@link #getLock()}.      * @param device the disconnected <code>IDevice</code>.      * @see #getLock()      */     void deviceDisconnected(IDevice device){         // because the listeners could remove themselves from the list while processing         // their event callback, we make a copy of the list and iterate on it instead of         // the main list.         // This mostly happens when the application quits.         IDeviceChangeListener[] listenersCopy =null;         synchronized(sLock){             listenersCopy = sDeviceListeners.toArray(                     newIDeviceChangeListener[sDeviceListeners.size()]);         }         // Notify the listeners         for(IDeviceChangeListener listener : listenersCopy){             // we attempt to catch any exception so that a bad listener doesn't kill our             // thread             try{                 listener.deviceDisconnected(device);             }catch(Exception e){                 Log.e(DDMS, e);             }         }     }     /**      * Notify the listener of a modified {@link IDevice}.      * <p/>      * The notification of the listeners is done in a synchronized block. It is important to      * expect the listeners to potentially access various methods of {@link IDevice} as well as      * {@link #getDevices()} which use internal locks.      * <p/>      * For this reason, any call to this method from a method of {@link DeviceMonitor},      * {@link IDevice} which is also inside a synchronized block, should first synchronize on      * the {@link AndroidDebugBridge} lock. Access to this lock is done through {@link #getLock()}.      * @param device the modified <code>IDevice</code>.      * @see #getLock()      */     void deviceChanged(IDevice device,int changeMask){         // because the listeners could remove themselves from the list while processing         // their event callback, we make a copy of the list and iterate on it instead of         // the main list.         // This mostly happens when the application quits.         IDeviceChangeListener[] listenersCopy =null;         synchronized(sLock){             listenersCopy = sDeviceListeners.toArray(                     newIDeviceChangeListener[sDeviceListeners.size()]);         }         // Notify the listeners         for(IDeviceChangeListener listener : listenersCopy){             // we attempt to catch any exception so that a bad listener doesn't kill our             // thread             try{                 listener.deviceChanged(device, changeMask);             }catch(Exception e){                 Log.e(DDMS, e);             }         }     }     /**      * Notify the listener of a modified {@link Client}.      * <p/>      * The notification of the listeners is done in a synchronized block. It is important to      * expect the listeners to potentially access various methods of {@link IDevice} as well as      * {@link #getDevices()} which use internal locks.      * <p/>      * For this reason, any call to this method from a method of {@link DeviceMonitor},      * {@link IDevice} which is also inside a synchronized block, should first synchronize on      * the {@link AndroidDebugBridge} lock. Access to this lock is done through {@link #getLock()}.      * @param device the modified <code>Client</code>.      * @param changeMask the mask indicating what changed in the <code>Client</code>      * @see #getLock()      */     void clientChanged(Client client,int changeMask){         // because the listeners could remove themselves from the list while processing         // their event callback, we make a copy of the list and iterate on it instead of         // the main list.         // This mostly happens when the application quits.         IClientChangeListener[] listenersCopy =null;         synchronized(sLock){             listenersCopy = sClientListeners.toArray(                     newIClientChangeListener[sClientListeners.size()]);         }         // Notify the listeners         for(IClientChangeListener listener : listenersCopy){             // we attempt to catch any exception so that a bad listener doesn't kill our             // thread             try{                 listener.clientChanged(client, changeMask);             }catch(Exception e){                 Log.e(DDMS, e);             }         }     }     /**      * Returns the {@link DeviceMonitor} object.      */     DeviceMonitor getDeviceMonitor(){         return mDeviceMonitor;     }     /**      * Starts the adb host side server.      * @return true if success      */     synchronizedboolean startAdb(){         if(mAdbOsLocation ==null){             Log.e(ADB,                 "Cannot start adb when AndroidDebugBridge is created without the location of adb.");//$NON-NLS-1$             returnfalse;         }         Process proc;         int status =-1;         try{             String[] command =newString[2];             command[0]= mAdbOsLocation;             command[1]="start-server";//$NON-NLS-1$             Log.d(DDMS,                     String.format("Launching '%1$s %2$s' to ensure ADB is running.",//$NON-NLS-1$                     mAdbOsLocation, command[1]));             proc =Runtime.getRuntime().exec(command);             ArrayList<String> errorOutput =newArrayList<String>();             ArrayList<String> stdOutput =newArrayList<String>();             status = grabProcessOutput(proc, errorOutput, stdOutput,                     false/* waitForReaders */);         }catch(IOException ioe){             Log.d(DDMS,"Unable to run 'adb': "+ ioe.getMessage());//$NON-NLS-1$             // we'll return false;         }catch(InterruptedException ie){             Log.d(DDMS,"Unable to run 'adb': "+ ie.getMessage());//$NON-NLS-1$             // we'll return false;         }         if(status !=0){             Log.w(DDMS,                     "'adb start-server' failed -- run manually if necessary");//$NON-NLS-1$             returnfalse;         }         Log.d(DDMS,"'adb start-server' succeeded");//$NON-NLS-1$         returntrue;     }     /**      * Stops the adb host side server.      * @return true if success      */     privatesynchronizedboolean stopAdb(){         if(mAdbOsLocation ==null){             Log.e(ADB,                 "Cannot stop adb when AndroidDebugBridge is created without the location of adb.");//$NON-NLS-1$             returnfalse;         }         Process proc;         int status =-1;         try{             String[] command =newString[2];             command[0]= mAdbOsLocation;             command[1]="kill-server";//$NON-NLS-1$             proc =Runtime.getRuntime().exec(command);             status = proc.waitFor();         }         catch(IOException ioe){             // we'll return false;         }         catch(InterruptedException ie){             // we'll return false;         }         if(status !=0){             Log.w(DDMS,                     "'adb kill-server' failed -- run manually if necessary");//$NON-NLS-1$             returnfalse;         }         Log.d(DDMS,"'adb kill-server' succeeded");//$NON-NLS-1$         returntrue;     }     /**      * Get the stderr/stdout outputs of a process and return when the process is done.      * Both <b>must</b> be read or the process will block on windows.      * @param process The process to get the ouput from      * @param errorOutput The array to store the stderr output. cannot be null.      * @param stdOutput The array to store the stdout output. cannot be null.      * @param displayStdOut If true this will display stdout as well      * @param waitforReaders if true, this will wait for the reader threads.      * @return the process return code.      * @throws InterruptedException      */     privateint grabProcessOutput(finalProcess process,finalArrayList<String> errorOutput,             finalArrayList<String> stdOutput,boolean waitforReaders)             throwsInterruptedException{         assert errorOutput !=null;         assert stdOutput !=null;         // read the lines as they come. if null is returned, it's         // because the process finished         Thread t1 =newThread(""){//$NON-NLS-1$             @Override             publicvoid run(){                 // create a buffer to read the stderr output                 InputStreamReader is =newInputStreamReader(process.getErrorStream());                 BufferedReader errReader =newBufferedReader(is);                 try{                     while(true){                         String line = errReader.readLine();                         if(line !=null){                             Log.e(ADB, line);                             errorOutput.add(line);                         }else{                             break;                         }                     }                 }catch(IOException e){                     // do nothing.                 }             }         };         Thread t2 =newThread(""){//$NON-NLS-1$             @Override             publicvoid run(){                 InputStreamReader is =newInputStreamReader(process.getInputStream());                 BufferedReader outReader =newBufferedReader(is);                 try{                     while(true){                         String line = outReader.readLine();                         if(line !=null){                             Log.d(ADB, line);                             stdOutput.add(line);                         }else{                             break;                         }                     }                 }catch(IOException e){                     // do nothing.                 }             }         };         t1.start();         t2.start();         // it looks like on windows process#waitFor() can return         // before the thread have filled the arrays, so we wait for both threads and the         // process itself.         if(waitforReaders){             try{                 t1.join();             }catch(InterruptedException e){             }             try{                 t2.join();             }catch(InterruptedException e){             }         }         // get the return code from the process         return process.waitFor();     }     /**      * Returns the singleton lock used by this class to protect any access to the listener.      * <p/>      * This includes adding/removing listeners, but also notifying listeners of new bridges,      * devices, and clients.      */     staticObject getLock(){         return sLock;     } }