Android版本2.2的错误对话框

Question

我开发了一个Android应用程序。它在4.4版本的手机中工作正常，但是当我在具有版本2.2的手机上运行它时，它显示以下错误消息。

任何人都可以帮助我在此请

11-21 13:53:14.679: E/WindowManager(29791): Activity com.example.smart_survey.QR has leaked window [email protected] that was originally added here 
11-21 13:53:14.679: E/WindowManager(29791): android.view.WindowLeaked: Activity com.example.smart_survey.QR has leaked window [email protected] that was originally added here 
11-21 13:53:14.679: E/WindowManager(29791):  at android.view.ViewRoot.<init>(ViewRoot.java:263) 
11-21 13:53:14.679: E/WindowManager(29791):  at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:171) 
11-21 13:53:14.679: E/WindowManager(29791):  at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:114) 
11-21 13:53:14.679: E/WindowManager(29791):  at android.view.Window$LocalWindowManager.addView(Window.java:424) 
11-21 13:53:14.679: E/WindowManager(29791):  at android.app.Dialog.show(Dialog.java:241) 
11-21 13:53:14.679: E/WindowManager(29791):  at com.example.smart_survey.QR$Logs.onPreExecute(QR.java:362) 
11-21 13:53:14.679: E/WindowManager(29791):  at android.os.AsyncTask.execute(AsyncTask.java:391) 
11-21 13:53:14.679: E/WindowManager(29791):  at com.example.smart_survey.QR$UpdateScore.onPostExecute(QR.java:255) 
11-21 13:53:14.679: E/WindowManager(29791):  at com.example.smart_survey.QR$UpdateScore.onPostExecute(QR.java:1) 
11-21 13:53:14.679: E/WindowManager(29791):  at android.os.AsyncTask.finish(AsyncTask.java:417) 
11-21 13:53:14.679: E/WindowManager(29791):  at android.os.AsyncTask.access$300(AsyncTask.java:127) 
11-21 13:53:14.679: E/WindowManager(29791):  at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:429) 
11-21 13:53:14.679: E/WindowManager(29791):  at android.os.Handler.dispatchMessage(Handler.java:99) 
11-21 13:53:14.679: E/WindowManager(29791):  at android.os.Looper.loop(Looper.java:130) 
11-21 13:53:14.679: E/WindowManager(29791):  at android.app.ActivityThread.main(ActivityThread.java:3687) 
11-21 13:53:14.679: E/WindowManager(29791):  at java.lang.reflect.Method.invokeNative(Native Method) 
11-21 13:53:14.679: E/WindowManager(29791):  at java.lang.reflect.Method.invoke(Method.java:507) 
11-21 13:53:14.679: E/WindowManager(29791):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867) 
11-21 13:53:14.679: E/WindowManager(29791):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625) 

11-21 13:53:14.773: E/AndroidRuntime(29791): FATAL EXCEPTION: main 
11-21 13:53:14.773: E/AndroidRuntime(29791): java.lang.IllegalArgumentException: View not attached to window manager 
11-21 13:53:14.773: E/AndroidRuntime(29791): at android.view.WindowManagerImpl.findViewLocked(WindowManagerImpl.java:378) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at android.view.WindowManagerImpl.removeView(WindowManagerImpl.java:223) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at android.view.Window$LocalWindowManager.removeView(Window.java:432) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at android.app.Dialog.dismissDialog(Dialog.java:278) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at android.app.Dialog.access$000(Dialog.java:71) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at android.app.Dialog$1.run(Dialog.java:111) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at android.app.Dialog.dismiss(Dialog.java:268) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at com.example.smart_survey.QR$Logs.onPostExecute(QR.java:420) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at com.example.smart_survey.QR$Logs.onPostExecute(QR.java:1) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at android.os.AsyncTask.finish(AsyncTask.java:417) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at android.os.AsyncTask.access$300(AsyncTask.java:127) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:429) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at android.os.Handler.dispatchMessage(Handler.java:99) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at android.os.Looper.loop(Looper.java:130) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at android.app.ActivityThread.main(ActivityThread.java:3687) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at java.lang.reflect.Method.invokeNative(Native Method) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at java.lang.reflect.Method.invoke(Method.java:507) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625) 
11-21 13:53:14.773: E/AndroidRuntime(29791): at dalvik.system.NativeStart.main(Native Method) 

Answer 1

pDialog = new ProgressDialog(QR.this); pDialog.setMessage("Loading. Please wait..."); pDialog.setIndeterminate(false); pDialog.setCancelable(false); 把它放在onCreate方法和简单的调用pDialog.show（）在Preexecute和pDialog.dismiss（）onPostExecute（），并没有必要改变OnStop（）