<分区>
在我的 Activity 中，我正在调用网络服务。所以在 webservice 返回结果后，我必须显示一个警报。由于警报是 UI 部分，我认为在 onPostExecute() 内部我必须编写警报代码。但是当我喜欢时，错误就来了。
显示的错误:
12-02 09:59:08.508: ERROR/AndroidRuntime(451): Uncaught handler: thread main exiting
due to uncaught exception
12-02 09:59:08.528: ERROR/AndroidRuntime(451):
android.view.WindowManager$BadTokenException: Unable to add window -- token
android.app.LocalActivityManager$LocalActivityRecord@4378eb50 is not valid; is your
activity running?
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at
android.view.ViewRoot.setView(ViewRoot.java:456)
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at
android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at
android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at
android.view.Window$LocalWindowManager.addView(Window.java:409)
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at
android.app.Dialog.show(Dialog.java:238)
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at
android.app.AlertDialog$Builder.show(AlertDialog.java:802)
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at com.myapp.android.activities.Register$PostCodeTask.onPostExecute(Register.java:291)
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at com.myapp.android.activities.Register$PostCodeTask.onPostExecute(Register.java:1)
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at
android.os.AsyncTask.finish(AsyncTask.java:416)
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at
android.os.AsyncTask.access$300(AsyncTask.java:127)
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at
android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:428)
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at
android.os.Handler.dispatchMessage(Handler.java:99)
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at
android.os.Looper.loop(Looper.java:123)
android.app.ActivityThread.main(ActivityThread.java:4203)
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at
java.lang.reflect.Method.invokeNative(Native Method)
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at
java.lang.reflect.Method.invoke(Method.java:521)
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
12-02 09:59:08.528: ERROR/AndroidRuntime(451): at dalvik.system.NativeStart.main(Native
Method)
任何人都可以帮助解决我的问题。提前致谢:)