Android泄露窗口

我使用AsyncTask來收集數據，然後開始一個新的活動，但我得到一個泄漏的窗口。Android泄露窗口

class GetDataTask extends AsyncTask<Void, Void, Void> {  

    @Override 
    protected void onPreExecute() 

    { 
     mProgressDialog = new ProgressDialog(getActivity()); 
     mProgressDialog.setMessage("Getting schedule for "+selectedSport+"..."); 
     mProgressDialog.setCancelable(false); 
     mProgressDialog.show(); 
    } 

    @Override 
    protected Void doInBackground(Void... params) 
    { 
     XmlPullFeedParser xpfp = new XmlPullFeedParser(scheduleURLtoGet); 
     ArrayList<Event> allEvents = xpfp.getEvents(); 
     scheduleToPassAlong = allEvents.toArray(new Event[allEvents.size()]);   
     return null; 
    } 

    @Override 
    protected void onPostExecute(Void res) 
    {  
     mProgressDialog.dismiss(); 
     startScheduleActivity(); 
    } 
} 

private void startScheduleActivity(){ 
    Intent intent = new Intent(this, ScheduleBoard.class); 
    intent.putExtra(SPORT_NAME_EXTRA, selectedSport); 
    intent.putExtra(SCHEDULE_FOR_SPORT_EXTRA, scheduleToPassAlong); 
    startActivity(intent); 
}

在ScheduleBoard活動中似乎發生異常，但doInBackground內的進程沒有完成。

這是堆棧，我仍然無法弄清楚發生了什麼。我在doInBackground try/catch語句，並沒有什麼是越來越觸發：

 07-31 19:48:18.667: E/WindowManager(2866): Activity com.myproj.activities.ScheduleBoard has leaked window [email protected] that was originally added here 
07-31 19:48:18.667: E/WindowManager(2866): android.view.WindowLeaked: Activity com.myproj.activities.ScheduleBoard has leaked window [email protected] that was originally added here 
07-31 19:48:18.667: E/WindowManager(2866): at android.view.ViewRoot.<init>(ViewRoot.java:263) 
07-31 19:48:18.667: E/WindowManager(2866): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:171) 
07-31 19:48:18.667: E/WindowManager(2866): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:114) 
07-31 19:48:18.667: E/WindowManager(2866): at android.view.Window$LocalWindowManager.addView(Window.java:424) 
07-31 19:48:18.667: E/WindowManager(2866): at android.app.Dialog.show(Dialog.java:241) 
07-31 19:48:18.667: E/WindowManager(2866): at android.app.AlertDialog$Builder.show(AlertDialog.java:810) 
07-31 19:48:18.667: E/WindowManager(2866): at com.myproj.activities.ScheduleBoard.displayNoStoriesMessageAndExit(ScheduleBoard.java:114) 
07-31 19:48:18.667: E/WindowManager(2866): at com.myproj.activities.ScheduleBoard.populateTable(ScheduleBoard.java:62) 
07-31 19:48:18.667: E/WindowManager(2866): at com.myproj.activities.ScheduleBoard.onCreate(ScheduleBoard.java:56) 
07-31 19:48:18.667: E/WindowManager(2866): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
07-31 19:48:18.667: E/WindowManager(2866): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615) 
07-31 19:48:18.667: E/WindowManager(2866): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667) 
07-31 19:48:18.667: E/WindowManager(2866): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 
07-31 19:48:18.667: E/WindowManager(2866): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935) 
07-31 19:48:18.667: E/WindowManager(2866): at android.os.Handler.dispatchMessage(Handler.java:99) 
07-31 19:48:18.667: E/WindowManager(2866): at android.os.Looper.loop(Looper.java:130) 
07-31 19:48:18.667: E/WindowManager(2866): at android.app.ActivityThread.main(ActivityThread.java:3687) 
07-31 19:48:18.667: E/WindowManager(2866): at java.lang.reflect.Method.invokeNative(Native Method) 
07-31 19:48:18.667: E/WindowManager(2866): at java.lang.reflect.Method.invoke(Method.java:507) 
07-31 19:48:18.667: E/WindowManager(2866): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842) 
07-31 19:48:18.667: E/WindowManager(2866): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 
07-31 19:48:18.667: E/WindowManager(2866): at dalvik.system.NativeStart.main(Native Method)

來源

2012-07-31 user1154644

請包括異常堆棧跟蹤。 – almalkawi 2012-07-31 01:13:55

顯示堆棧跟蹤，我不認爲窗口泄漏是你的問題。窗口泄漏可能是因爲您的應用崩潰而未關閉onPostExecute中的對話框。所以你的doInBackground可能有一些東西。 – digiphd 2012-07-31 05:33:33

請參見下面的代碼

private class ProgressTask extends AsyncTask<String, Void, Boolean> { 

private ProgressDialog dialog = new ProgressDialog(HomeActivity.this); 

protected void onPreExecute() { 
    this.dialog.setMessage("Please wait"); 
    this.dialog.show(); 
} 

protected Boolean doInBackground(final String... args) { 
    try { 
     Utilities.arrayRSS = objRSSFeed 
       .FetchRSSFeeds(Constants.Feed_URL); 
     return true; 
    } catch (Exception e) { 
     Log.e("tag", "error", e); 
     return false; 
    } 
} 

@Override 
protected void onPostExecute(final Boolean success) { 

    if (dialog.isShowing()) { 
     dialog.dismiss(); 
    } 
     // display UI 
     UpdateDisplay(); 
} 
}

來源

2012-07-31 06:38:06 Nirali

發生這種情況是因爲您的活動獲取的破壞和ProgressDialog泄漏。當進度顯示或將屏幕旋轉90度時，您可以通過按電源按鈕來複制。

你需要做的進度對話框是解僱他們和恢復onResume在我的實踐中，它可以變得非常複雜，跟蹤這種東西。當我從Activity開始AsyncTask時，我將AsyncTask鉤到Application，並在完成時摘機。應用程序對象存儲關於什麼活動有什麼任務正在運行的信息，並且當您單擊主頁並返回到應用程序時可以恢復進度對話框

來源

2012-07-31 23:55:18 katit

但我從來沒有打電話給完成（）活動 – user1154644 2012-08-01 00:02:20

它看起來像什麼？你看到你的進度對話框，然後崩潰？或者你沒有看到進度對話框？您的活動被操作系統銷燬或暫停，您將因不同原因泄漏進度。 – katit 2012-08-01 00:04:45

該對話框顯示約1秒，然後立即消失，但AsyncTask內部運行的活動仍然存在，但新活動永遠不會啓動。 – user1154644 2012-08-01 00:32:59

Android泄露窗口

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