有时我单击我的应用程序中的EditText，软键盘不会显示，并且会发生异常（异常并不总是发生）。 异常日志是：
W/InputMethodManagerService( 461): android.os.DeadObjectException
W/InputMethodManagerService( 461): at android.os.BinderProxy.transact(Native Method)
W/InputMethodManagerService( 461): at com.android.internal.view.IInputMethodSession$Stub$Proxy.finishSession(IInputMethodSession.java:292)
W/InputMethodManagerService( 461): at com.android.server.InputMethodManagerService.finishSessionLocked(InputMethodManagerService.java:1357)
W/InputMethodManagerService( 461): at com.android.server.InputMethodManagerService.clearClientSessionLocked(InputMethodManagerService.java:1348)
W/InputMethodManagerService( 461): at com.android.server.InputMethodManagerService.clearCurMethodLocked(InputMethodManagerService.java:1374)
W/InputMethodManagerService( 461): at com.android.server.InputMethodManagerService.onServiceDisconnected(InputMethodManagerService.java:1393)
W/InputMethodManagerService( 461): at android.app.LoadedApk$ServiceDispatcher.doDeath(LoadedApk.java:1120)
W/InputMethodManagerService( 461): at android.app.LoadedApk$ServiceDispatcher$RunConnection.run(LoadedApk.java:1134)
W/InputMethodManagerService( 461): at android.os.Handler.handleCallback(Handler.java:733)
W/InputMethodManagerService( 461): at android.os.Handler.dispatchMessage(Handler.java:95)
W/InputMethodManagerService( 461): at android.os.Looper.loop(Looper.java:136)
W/InputMethodManagerService( 461): at com.android.server.ServerThread.initAndLoop(SystemServer.java:1111)
W/InputMethodManagerService( 461): at com.android.server.SystemServer.main(SystemServer.java:1197)
W/InputMethodManagerService( 461): at java.lang.reflect.Method.invokeNative(Native Method)
W/InputMethodManagerService( 461): at java.lang.reflect.Method.invoke(Method.java:515)
W/InputMethodManagerService( 461): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
W/InputMethodManagerService( 461): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
W/InputMethodManagerService( 461): at dalvik.system.NativeStart.main(Native Method)