【Android测试】【第三节】ADB——源码浅谈

◆版权声明：本文出自carter_dream的博客，转载必须注明出处。

转载请注明出处：http://www.cnblogs.com/by-dream/p/4651724.html

前言

---

由于本人精力平有限，所以这里简单的说说ADB源码。

　　首先根据前面的理解，我们已经知道了ADB是“连接手机和PC的一个桥梁”，我们经常在PC端开发的时候，会用到eclipse这个工具，这里面有一个工具叫DDMS，如下图：

　

　　是不是发现通过DDMS在PC端可以看到手机的一些信息，其实呢 它就是通过 “ddmlib.jar” 来建立起ADB的。因此我们今天就通过反编译 “ddmlib.jar” 来分析一下ADB源码。

反编译

---

　　首先不得不吐槽一下百度经验的审核人员，我看到里面“反编译jar”的经验没有，于是呢我就写了一个提交了上去，结果提交了很多次，都给我打回了，真不知道这帮审核的人员是怎么想的，这种方便别人参考的内容难道不应该被通过吗？切

　　好了，说正事吧。

　　ddmlib.jar 放在 <SDk path>\tools\libs 的文件夹下。

　　整个反编译的过程如下：

　　　　1、下载jd-gui-0.3.3.windows.zip （我的微云链接：http://url.cn/Zz8sOj ）

　　　　2、解压之后打开，将要编译的jar导入：

　　　　3、展开坐标的树形结构，就是源码啦

上源码

---

 /*
  * 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 org.athrun.ddmlib;

 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.Map;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;

 import org.athrun.ddmlib.Log.LogLevel;

 /**
  * 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>
  */
 public final class AndroidDebugBridge {

     /*
      * Minimum and maximum version of adb supported. This correspond to
      * ADB_SERVER_VERSION found in //device/tools/adb/adb.h
      */

     private final static int ADB_VERSION_MICRO_MIN = 20;
     private final static int ADB_VERSION_MICRO_MAX = -1;

     private final static Pattern sAdbVersion = Pattern
             .compile("^.*(\\d+)\\.(\\d+)\\.(\\d+)$"); //$NON-NLS-1$

     private final static String ADB = "adb"; //$NON-NLS-1$
     private final static String DDMS = "ddms"; //$NON-NLS-1$
     private final static String SERVER_PORT_ENV_VAR = "ANDROID_ADB_SERVER_PORT"; //$NON-NLS-1$

     // Where to find the ADB bridge.
     final static String ADB_HOST = "127.0.0.1"; //$NON-NLS-1$
     final static int ADB_PORT = 5037;

     private static InetAddress sHostAddr;
     private static InetSocketAddress sSocketAddr;

     private static AndroidDebugBridge sThis;
     private static boolean sInitialized = false;
     private static boolean sClientSupport;

     /** Full path to adb. */
     private String mAdbOsLocation = null;

     private boolean mVersionCheck;

     private boolean mStarted = false;

     private DeviceMonitor mDeviceMonitor;

     private final static ArrayList<IDebugBridgeChangeListener> sBridgeListeners = new ArrayList<IDebugBridgeChangeListener>();
     private final static ArrayList<IDeviceChangeListener> sDeviceListeners = new ArrayList<IDeviceChangeListener>();
     private final static ArrayList<IClientChangeListener> sClientListeners = new ArrayList<IClientChangeListener>();

     // lock object for synchronization
     private static final Object 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.
          */
         public void 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.
          */
         public void 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.
          */
         public void 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}
          */
         public void 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}
          */
         public void 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
      */
     public static synchronized void init(boolean clientSupport) {
         if (sInitialized) {
             throw new IllegalStateException(
                     "AndroidDebugBridge.init() has already been called.");
         }
         sInitialized = true;
         sClientSupport = clientSupport;

         // Determine port and instantiate socket address.
         initAdbSocketAddr();

         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);
         HandleNativeHeap.register(monitorThread);
     }

     /**
      * Terminates the ddm library. This must be called upon application
      * termination.
      */
     public static synchronized void 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();
         }

         sInitialized = false;
     }

     /**
      * Returns whether the ddmlib is setup to support monitoring and interacting
      * with {@link Client}s running on the {@link IDevice}s.
      */
     static boolean getClientSupport() {
         return sClientSupport;
     }

     /**
      * Returns the socket address of the ADB server on the host.
      */
     public static InetSocketAddress getSocketAddress() {
         return sSocketAddr;
     }

     /**
      * 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.
      */
     public static AndroidDebugBridge createBridge() {
         synchronized (sLock) {
             if (sThis != null) {
                 return sThis;
             }

             try {
                 sThis = new AndroidDebugBridge();
                 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(new IDebugBridgeChangeListener[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.
      */
     public static AndroidDebugBridge 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 = new AndroidDebugBridge(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(new IDebugBridgeChangeListener[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.
      */
     public static AndroidDebugBridge 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)}.
      */
     public static void 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(new IDebugBridgeChangeListener[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.
      */
     public static void 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.
      */
     public static void 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.
      */
     public static void 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.
      */
     public static void 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.
      */
     public static void 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.
      */
     public static void removeClientChangeListener(IClientChangeListener listener) {
         synchronized (sLock) {
             sClientListeners.remove(listener);
         }
     }

     /**
      * Returns the devices.
      *
      * @see #hasInitialDeviceList()
      */
     public IDevice[] getDevices() {
         synchronized (sLock) {
             if (mDeviceMonitor != null) {
                 return mDeviceMonitor.getDevices();
             }
         }

         return new IDevice[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.
      */
     public boolean hasInitialDeviceList() {
         if (mDeviceMonitor != null) {
             return mDeviceMonitor.hasInitialDeviceList();
         }

         return false;
     }

     /**
      * Sets the client to accept debugger connection on the custom
      * "Selected debug port".
      *
      * @param selectedClient
      *            the client. Can be null.
      */
     public void 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.
      */
     public boolean isConnected() {
         MonitorThread monitorThread = MonitorThread.getInstance();
         if (mDeviceMonitor != null && monitorThread != null) {
             return mDeviceMonitor.isMonitoring()
                     && monitorThread.getState() != State.TERMINATED;
         }
         return false;
     }

     /**
      * Returns the number of times the {@link AndroidDebugBridge} object
      * attempted to connect to the adb daemon.
      */
     public int getConnectionAttemptCount() {
         if (mDeviceMonitor != null) {
             return mDeviceMonitor.getConnectionAttemptCount();
         }
         return -1;
     }

     /**
      * Returns the number of times the {@link AndroidDebugBridge} object
      * attempted to restart the adb daemon.
      */
     public int getRestartAttemptCount() {
         if (mDeviceMonitor != null) {
             return mDeviceMonitor.getRestartAttemptCount();
         }
         return -1;
     }

     /**
      * Creates a new bridge.
      *
      * @param osLocation
      *            the location of the command line tool
      * @throws InvalidParameterException
      */
     private AndroidDebugBridge(String osLocation)
             throws InvalidParameterException {
         if (osLocation == null || osLocation.length() == 0) {
             throw new InvalidParameterException();
         }
         mAdbOsLocation = osLocation;

         checkAdbVersion();
     }

     /**
      * Creates a new bridge not linked to any particular adb executable.
      */
     private AndroidDebugBridge() {
     }

     /**
      * Queries adb for its version number and checks it against
      * {@link #MIN_VERSION_NUMBER} and {@link #MAX_VERSION_NUMBER}
      */
     private void checkAdbVersion() {
         // default is bad check
         mVersionCheck = false;

         if (mAdbOsLocation == null) {
             return;
         }

         try {
             String[] command = new String[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 = new ArrayList<String>();
             ArrayList<String> stdOutput = new ArrayList<String>();
             int status = grabProcessOutput(process, errorOutput, stdOutput,
                     true /* waitForReaders */);

             if (status != 0) {
                 StringBuilder builder = new StringBuilder(
                         "'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).
      */
     @SuppressWarnings("all")
     // With Eclipse 3.6, replace by @SuppressWarnings("unused")
     private boolean 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);
                 } else if (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;
                 }

                 return true;
             }
         }
         return false;
     }

     /**
      * Starts the debug bridge.
      *
      * @return true if success.
      */
     boolean start() {
         if (mAdbOsLocation != null
                 && (mVersionCheck == false || startAdb() == false)) {
             return false;
         }

         mStarted = true;

         // now that the bridge is connected, we start the underlying services.
         mDeviceMonitor = new DeviceMonitor(this);
         mDeviceMonitor.start();

         return true;
     }

     /**
      * 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) {
             return false;
         }

         // kill the monitoring services
         mDeviceMonitor.stop();
         mDeviceMonitor = null;

         if (stopAdb() == false) {
             return false;
         }

         mStarted = false;
         return true;
     }

     /**
      * Restarts adb, but not the services around it.
      *
      * @return true if success.
      */
     public boolean restart() {
         if (mAdbOsLocation == null) {
             Log.e(ADB,
                     "Cannot restart adb when AndroidDebugBridge is created without the location of adb."); //$NON-NLS-1$
             return false;
         }

         if (mVersionCheck == false) {
             Log.logAndDisplay(LogLevel.ERROR, ADB,
                     "Attempting to restart adb, but version check failed!"); //$NON-NLS-1$
             return false;
         }
         synchronized (this) {
             stopAdb();

             boolean restart = startAdb();

             if (restart && mDeviceMonitor == null) {
                 mDeviceMonitor = new DeviceMonitor(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(new IDeviceChangeListener[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(new IDeviceChangeListener[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(new IDeviceChangeListener[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(new IClientChangeListener[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
      */
     synchronized boolean startAdb() {
         if (mAdbOsLocation == null) {
             Log.e(ADB,
                     "Cannot start adb when AndroidDebugBridge is created without the location of adb."); //$NON-NLS-1$
             return false;
         }

         Process proc;
         int status = -1;

         try {
             String[] command = new String[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]));
             ProcessBuilder processBuilder = new ProcessBuilder(command);
             if (DdmPreferences.getUseAdbHost()) {
                 String adbHostValue = DdmPreferences.getAdbHostValue();
                 if (adbHostValue != null && adbHostValue.length() > 0) {
                     // TODO : check that the String is a valid IP address
                     Map<String, String> env = processBuilder.environment();
                     env.put("ADBHOST", adbHostValue);
                 }
             }
             proc = processBuilder.start();

             ArrayList<String> errorOutput = new ArrayList<String>();
             ArrayList<String> stdOutput = new ArrayList<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"); //$NON-NLS-1$
             return false;
         }

         Log.d(DDMS, "'adb start-server' succeeded"); //$NON-NLS-1$

         return true;
     }

     /**
      * Stops the adb host side server.
      *
      * @return true if success
      */
     private synchronized boolean stopAdb() {
         if (mAdbOsLocation == null) {
             Log.e(ADB,
                     "Cannot stop adb when AndroidDebugBridge is created without the location of adb."); //$NON-NLS-1$
             return false;
         }

         Process proc;
         int status = -1;

         try {
             String[] command = new String[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"); //$NON-NLS-1$
             return false;
         }

         Log.d(DDMS, "'adb kill-server' succeeded"); //$NON-NLS-1$
         return true;
     }

     /**
      * 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
      */
     private int grabProcessOutput(final Process process,
             final ArrayList<String> errorOutput,
             final ArrayList<String> stdOutput, boolean waitforReaders)
             throws InterruptedException {
         assert errorOutput != null;
         assert stdOutput != null;
         // read the lines as they come. if null is returned, it's
         // because the process finished
         Thread t1 = new Thread("") { //$NON-NLS-1$
             @Override
             public void run() {
                 // create a buffer to read the stderr output
                 InputStreamReader is = new InputStreamReader(
                         process.getErrorStream());
                 BufferedReader errReader = new BufferedReader(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 = new Thread("") { //$NON-NLS-1$
             @Override
             public void run() {
                 InputStreamReader is = new InputStreamReader(
                         process.getInputStream());
                 BufferedReader outReader = new BufferedReader(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.
      */
     static Object getLock() {
         return sLock;
     }

     /**
      * Instantiates sSocketAddr with the address of the host's adb process.
      */
     private static void initAdbSocketAddr() {
         try {
             int adb_port = determineAndValidateAdbPort();
             sHostAddr = InetAddress.getByName(ADB_HOST);
             sSocketAddr = new InetSocketAddress(sHostAddr, adb_port);
         } catch (UnknownHostException e) {
             // localhost should always be known.
         }
     }

     /**
      * Determines port where ADB is expected by looking at an env variable.
      * <p/>
      * The value for the environment variable ANDROID_ADB_SERVER_PORT is
      * validated, IllegalArgumentException is thrown on illegal values.
      * <p/>
      *
      * @return The port number where the host's adb should be expected or
      *         started.
      * @throws IllegalArgumentException
      *             if ANDROID_ADB_SERVER_PORT has a non-numeric value.
      */
     private static int determineAndValidateAdbPort() {
         String adb_env_var;
         int result = ADB_PORT;
         try {
             adb_env_var = System.getenv(SERVER_PORT_ENV_VAR);

             if (adb_env_var != null) {
                 adb_env_var = adb_env_var.trim();
             }

             if (adb_env_var != null && adb_env_var.length() > 0) {
                 // C tools (adb, emulator) accept hex and octal port numbers, so
                 // need to accept
                 // them too.
                 result = Integer.decode(adb_env_var);

                 if (result <= 0) {
                     String errMsg = "env var " + SERVER_PORT_ENV_VAR //$NON-NLS-1$
                             + ": must be >=0, got " //$NON-NLS-1$
                             + System.getenv(SERVER_PORT_ENV_VAR);
                     throw new IllegalArgumentException(errMsg);
                 }
             }
         } catch (NumberFormatException nfEx) {
             String errMsg = "env var " + SERVER_PORT_ENV_VAR //$NON-NLS-1$
                     + ": illegal value '" //$NON-NLS-1$
                     + System.getenv(SERVER_PORT_ENV_VAR) + "'"; //$NON-NLS-1$
             throw new IllegalArgumentException(errMsg);
         } catch (SecurityException secEx) {
             // A security manager has been installed that doesn't allow access
             // to env vars.
             // So an environment variable might have been set, but we can't
             // tell.
             // Let's log a warning and continue with ADB's default port.
             // The issue is that adb would be started (by the forked process
             // having access
             // to the env vars) on the desired port, but within this process, we
             // can't figure out
             // what that port is. However, a security manager not granting
             // access to env vars
             // but allowing to fork is a rare and interesting configuration, so
             // the right
             // thing seems to be to continue using the default port, as forking
             // is likely to
             // fail later on in the scenario of the security manager.
             Log.w(DDMS,
                     "No access to env variables allowed by current security manager. " //$NON-NLS-1$
                             + "If you've set ANDROID_ADB_SERVER_PORT: it's being ignored."); //$NON-NLS-1$
         }
         return result;
     }

 }

AndroidDebugBridge

实现

---

　　既然ddmlib包含了ADB，因为我们就引入它，来进行一些ADB操作。

　　1、建立一个普通的Java工程；

　　2、将ddmlib.jar，包含进来（这里需要主要，还需要引入guava-15.0.jar，否则会提示少 com/geogle/common/*** 的错误，guava和ddmlib存放在同一个目录下）

　　3、调用AndroidDebugBridge类中的方法，完成要实现的方法（例如下面）

import com.android.ddmlib.AndroidDebugBridge;
import com.android.ddmlib.IDevice;

public class test
{
    public static void main(String[] args)
    {
        System.out.println(" begin ");
        AndroidDebugBridge.init(false);
        //AndroidDebugBridge adb = AndroidDebugBridge.createBridge("E:\\adt-bundle-windows-x86_64-20140702\\sdk\\platform-tools\\adb.exe", true);
        AndroidDebugBridge adb = AndroidDebugBridge.createBridge();

        WaitDevices(adb);

        for (IDevice device : adb.getDevices())
        {
            System.out.println("Device Name: "  +  device.getName());
            System.out.println("Device isOnline: " + device.isOnline() );
            System.out.println("Device SerialNumber: : " + device.getSerialNumber());
        }
        System.out.println(" end ");
    }

    public static void WaitDevices(AndroidDebugBridge adb)
    {
         int count = 0;
         while (adb.hasInitialDeviceList() == false)
         {
                try
                {
                       Thread.sleep(500);
                       System.err.println("wait for devices");
                       count++;
                } catch (InterruptedException e)
                {
                }
                if (count > 50)
                {
                       System.err.println("time out\n");
                       break;
                }
         }
    }
}

　　运行上面的代码输出结果为：

 begin
wait for devices
Device Name: samsung-gt_i9500-4d0019214ab6608f
Device isOnline: true
Device SerialNumber: : 4d0019214ab6608f
 end 

　　

　　注意区分，上面代码里的createBridge() 的方法，无参得到代表使用系统当前的ADB，如果指定了参数，且第二个参数为ture，则启动指定的ADB，这些通过源代码都可以看到。另外createBridge() 之前必须要调用 init 的方法。接下来拿到Idevice 对象就可以实现各种各样的功能了，这里只是说一下怎么用这个lib，具体你想通过这个东西来拿到什么信息，还需自己动手去写写。