當在異步任務中顯示進度對話框時出現錯誤異常

我目前正在處理異步任務以將一些數據發佈到API，問題是當我使用進度對話框時，它會引發異常。異步任務被命名爲「APIhandler」，它將處理幾種類型的情況。當在異步任務中顯示進度對話框時出現錯誤異常

這裏是構造

public APIHandler(Context _ctx,EasyTracker _tracker,String _formType) { 
     this.ctx = _ctx; 
     this.tracker = _tracker; 
     this.formType = _formType; 

     SharedPreferences prefs = ctx.getSharedPreferences("userInfo", 0); 
     token = prefs.getString("token",""); 
     memId = prefs.getString("memId",""); 

     if (formType.equals("uploadImg")) { 
      pd = ProgressDialog.show(ctx, ctx.getResources().getString(R.string.sys_info),ctx.getResources().getString(R.string.publishing)); 
     } else { 
      pd = ProgressDialog.show(ctx, ctx.getResources().getString(R.string.sys_info),ctx.getResources().getString(R.string.loading)); 
     } 
    }

這裏是onpostexecute

@Override 
    protected void onPostExecute(JSONObject result) { 
     if (pd != null && pd.isShowing()) 
      pd.dismiss(); 
}

這裏是調用APIhandler

new APIHandler(ctx,tracker,"login").execute(ctx,session.getAccessToken());

錯誤代碼（注意，這是失敗的方式dialog.show）

02-18 14:17:17.942: E/WindowManager(440): Activity com.project.hkseven.Activity.SharePicForm has leaked window [email protected] that was originally added here 
02-18 14:17:17.942: E/WindowManager(440): android.view.WindowLeaked: Activity com.project.hkseven.Activity.SharePicForm has leaked window [email protected] that was originally added here 
02-18 14:17:17.942: E/WindowManager(440): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:439) 
02-18 14:17:17.942: E/WindowManager(440): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:307) 
02-18 14:17:17.942: E/WindowManager(440): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:228) 
02-18 14:17:17.942: E/WindowManager(440): at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:153) 
02-18 14:17:17.942: E/WindowManager(440): at android.view.Window$LocalWindowManager.addView(Window.java:586) 
02-18 14:17:17.942: E/WindowManager(440): at android.app.Dialog.show(Dialog.java:277) 
02-18 14:17:17.942: E/WindowManager(440): at android.app.ProgressDialog.show(ProgressDialog.java:116) 
02-18 14:17:17.942: E/WindowManager(440): at android.app.ProgressDialog.show(ProgressDialog.java:99) 
02-18 14:17:17.942: E/WindowManager(440): at android.app.ProgressDialog.show(ProgressDialog.java:94) 
02-18 14:17:17.942: E/WindowManager(440): at com.project.hkseven.Utility.APIHandler.<init>(APIHandler.java:62) 
02-18 14:17:17.942: E/WindowManager(440): at com.project.hkseven.Activity.SharePicForm$4.onCompleted(SharePicForm.java:282) 
02-18 14:17:17.942: E/WindowManager(440): at com.facebook.Request$4.run(Request.java:1669) 
02-18 14:17:17.942: E/WindowManager(440): at android.os.Handler.handleCallback(Handler.java:615) 
02-18 14:17:17.942: E/WindowManager(440): at android.os.Handler.dispatchMessage(Handler.java:92) 
02-18 14:17:17.942: E/WindowManager(440): at android.os.Looper.loop(Looper.java:137) 
02-18 14:17:17.942: E/WindowManager(440): at android.app.ActivityThread.main(ActivityThread.java:4882) 
02-18 14:17:17.942: E/WindowManager(440): at java.lang.reflect.Method.invokeNative(Native Method) 
02-18 14:17:17.942: E/WindowManager(440): at java.lang.reflect.Method.invoke(Method.java:511) 
02-18 14:17:17.942: E/WindowManager(440): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789) 
02-18 14:17:17.942: E/WindowManager(440): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556) 
02-18 14:17:17.942: E/WindowManager(440): at dalvik.system.NativeStart.main(Native Method)

如何解決問題？非常感謝

來源

2014-02-18 user782104

試用pd.cancel（）; –

很遺憾地說，但是你發佈的日誌是因爲可能發生的其他異常。請在窗口泄漏錯誤之前閱讀整個日誌，m確定您會得到實際錯誤 –

您是否在顯示對話框後完成活動SharePicForm？ – Anuj

只要確保在展示對話框之前您未完成SharePicForm活動。錯誤顯示您的SharePicForm活動在顯示對話框時不存在。或者可能已經退出。

來源

2014-02-18 06:47:06 Anuj

當在異步任務中顯示進度對話框時出現錯誤異常

回答

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