monkeyrunner内置uiautomator出错的原因

之前做app功能遍历的项目中使用的是monkeyrunner+hierarchyviewer的方式，但是hierarchyviewer提供的信息太多而且无用的信息居多，所以想换成monkeyrunner+uiautomatorviewer的方式来做。但是在集合的时候调用monkeyrunner和uiautomator时出错：

public void test_Exception() {System.setProperty("com.android.uiautomator.bindir", "D:/sdk/tools");DebugBridge.init();MyDeviceManager manager = null;IDevice idevice = null;try {Thread.sleep(3000);List<IDevice> devices = DebugBridge.getDevices();idevice = devices.get(0);manager = new MyDeviceManager(idevice);getUIHierarchy(idevice);} catch (Exception e) {e.printStackTrace();} finally {manager.dispose();DebugBridge.terminate();}}private void getUIHierarchy(IDevice idevice) {String path = System.getProperty("user.dir") + File.separator + "xml" + File.separator + "uidump.xml";String command = String.format("%s %s %s", new Object[] { "/system/bin/uiautomator", "dump","/data/local/tmp/qianhui.xml" });CountDownLatch commandCompleteLatch = new CountDownLatch(1);try {idevice.executeShellCommand(command, new CollectingOutputReceiver(commandCompleteLatch), 40000);commandCompleteLatch.await(40L, TimeUnit.SECONDS);System.out.println("Pull UI XML snapshot from device...1212");idevice.getSyncService().pullFile("/data/local/tmp/qianhui.xml", path, SyncService.getNullProgressMonitor());} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}

在MyDeviceManager构造方法中执行的是创建monkey对象：

public MyDeviceManager(IDevice iDevice) {this.mIDevice = iDevice;this.mAdbChimpDevice = new AdbChimpDevice(iDevice);/*String width = mAdbChimpDevice.getProperty("display.width");System.out.println(width);String height = mAdbChimpDevice.getProperty("display.height");System.out.println(height);sWidth = Integer.parseInt(width);sHeight = Integer.parseInt(height);*/}

当我执行上面的代码时报错：

06-01 17:06:47.897: E/AndroidRuntime(3007): *** FATAL EXCEPTION IN SYSTEM PROCESS: main06-01 17:06:47.897: E/AndroidRuntime(3007): java.lang.IllegalStateException: UiAutomationService android.accessibilityservice.IAccessibilityServiceClient$Stub$Proxy@421baa38already registered!06-01 17:06:47.897: E/AndroidRuntime(3007): at android.os.Parcel.readException(Parcel.java:1473)06-01 17:06:47.897: E/AndroidRuntime(3007): at android.os.Parcel.readException(Parcel.java:1419)06-01 17:06:47.897: E/AndroidRuntime(3007): at android.view.accessibility.IAccessibilityManager$Stub$Proxy.registerUiTestAutomationService(IAccessibilityManager.java:342)06-01 17:06:47.897: E/AndroidRuntime(3007): at android.app.UiAutomationConnection.registerUiTestAutomationServiceLocked(UiAutomationConnection.java:175)06-01 17:06:47.897: E/AndroidRuntime(3007): at android.app.UiAutomationConnection.connect(UiAutomationConnection.java:72)06-01 17:06:47.897: E/AndroidRuntime(3007): at android.app.UiAutomation.connect(UiAutomation.java:188)06-01 17:06:47.897: E/AndroidRuntime(3007): at com.android.uiautomator.core.UiAutomationShellWrapper.connect(UiAutomationShellWrapper.java:32)06-01 17:06:47.897: E/AndroidRuntime(3007): at com.android.commands.uiautomator.DumpCommand.run(DumpCommand.java:74)06-01 17:06:47.897: E/AndroidRuntime(3007): at com.android.commands.uiautomator.Launcher.main(Launcher.java:83)06-01 17:06:47.897: E/AndroidRuntime(3007): at com.android.internal.os.RuntimeInit.nativeFinishInit(Native Method)06-01 17:06:47.897: E/AndroidRuntime(3007): at com.android.internal.os.RuntimeInit.main(RuntimeInit.java:271)06-01 17:06:47.897: E/AndroidRuntime(3007): at dalvik.system.NativeStart.main(Native Method)06-01 17:06:47.907: E/ServiceManager(3007): error in getService06-01 17:06:47.907: E/ServiceManager(3007): android.os.RemoteException: Unknown binder error code. 0xfffffff706-01 17:06:47.907: E/ServiceManager(3007): at android.os.BinderProxy.transact(Native Method)06-01 17:06:47.907: E/ServiceManager(3007): at android.os.ServiceManagerProxy.getService(ServiceManagerNative.java:123)06-01 17:06:47.907: E/ServiceManager(3007): at android.os.ServiceManager.getService(ServiceManager.java:55)06-01 17:06:47.907: E/ServiceManager(3007): at android.app.ActivityManagerNative$1.create(ActivityManagerNative.java:2152)06-01 17:06:47.907: E/ServiceManager(3007): at android.app.ActivityManagerNative$1.create(ActivityManagerNative.java:2150)06-01 17:06:47.907: E/ServiceManager(3007): at android.util.Singleton.get(Singleton.java:34)06-01 17:06:47.907: E/ServiceManager(3007): at android.app.ActivityManagerNative.getDefault(ActivityManagerNative.java:76)06-01 17:06:47.907: E/ServiceManager(3007): at com.android.internal.os.RuntimeInit$UncaughtHandler.uncaughtException(RuntimeInit.java:86)06-01 17:06:47.907: E/ServiceManager(3007): at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:693)06-01 17:06:47.907: E/ServiceManager(3007): at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:690)06-01 17:06:47.907: E/ServiceManager(3007): at dalvik.system.NativeStart.main(Native Method)06-01 17:06:47.917: I/Process(3007): Sending signal. PID: 3007 SIG: 906-01 17:06:47.917: E/AndroidRuntime(3007): Error reporting crash06-01 17:06:47.917: E/AndroidRuntime(3007): java.lang.NullPointerException06-01 17:06:47.917: E/AndroidRuntime(3007): at com.android.internal.os.RuntimeInit$UncaughtHandler.uncaughtException(RuntimeInit.java:86)06-01 17:06:47.917: E/AndroidRuntime(3007): at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:693)06-01 17:06:47.917: E/AndroidRuntime(3007): at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:690)06-01 17:06:47.917: E/AndroidRuntime(3007): at dalvik.system.NativeStart.main(Native Method)

而当我把

manager = new MyDeviceManager(idevice);getUIHierarchy(idevice);

的位置调换一下，执行成功。所以我怀疑monkeyrunner在启动的时候已经创建了uiautomator的对象，才会造成上面的提示错误，所以我试图去查看一下monkeyrunner到底有没有做这件事。

查看AdbChimpDevice创建的源码，发现

String command = new StringBuilder().append("monkey --port ").append(port).toString();    executeAsyncCommand(command, new LoggingOutputReceiver(LOG, Level.FINE));

这一步是打开monkey，在cmd下执行该命令就能知道：

通过这条命令我找到了system/bin下的monkey脚本：

# Script to start "monkey" on the device, which has a very rudimentary# shell.#base=/systemexport CLASSPATH=$base/framework/monkey.jartrap "" HUPexec app_process $base/bin com.android.commands.monkey.Monkey $*

然后用dex2jar工具将其编译成classes_dex2jar.jar,然后用JD-GUI打开。

找到了执行的方法，但是没发现执行uiautomator的函数。继续看AdbChimpDevice里方法一路跟踪到ChimpManager这个类，在AdbChimpDevice执行力该类的wake()方法：

  public void wake()    throws IOException  {    sendMonkeyEvent("wake");  }

private String sendMonkeyEventAndGetResponse(String command)    throws IOException  {    command = command.trim();    LOG.info(new StringBuilder().append("Monkey Command: ").append(command).append(".").toString());    this.monkeyWriter.write(new StringBuilder().append(command).append("\n").toString());    this.monkeyWriter.flush();    return this.monkeyReader.readLine();  }

最终向12345端口的socket发送了一条wake的命令。

很不幸，被我言中了。看来将uiautomator内置进来，还不是一件轻松的事情！