Android ALerDialog - 無法添加窗口異常

Question

所以基本上我在我的TabHost中使用TabGroupActivity，所以我可以在一個選項卡內切換不同的活動。兩天之前，我現在運行的代碼是好的，沒有任何exceptions.But在當時我翻我改變與不同的所有視圖activities.So我的情況tab.Now裏面的觀點是這樣的事情：

Main tab Activity -> opens Second activity -> which opens the third activity ,where the AlertDialog is. 

我正在使用的代碼是：

Button deactivate = (Button) findViewById(R.id.deactivate); 
     deactivate.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View v) { 
       new AlertDialog.Builder(getParent()) 
       .setTitle("Warning") 
       .setMessage("The collection will be removed completely from the device.You can reactivate it later again.This operation requires internet connection.") 
       .setPositiveButton("Go ahead", new DialogInterface.OnClickListener() { 
        public void onClick(DialogInterface dialog, int which) { 
         Log.d("AlertDialog", "Positive"); 
        } 
       }) 
       .setNegativeButton("Cancel", new DialogInterface.OnClickListener() { 
        public void onClick(DialogInterface dialog, int which) { 
         Log.d("AlertDialog","Negative"); 
        } 
       }) 
       .show();  

      } 

    }); 

和例外是：

08-14 11:08:33.254: ERROR/AndroidRuntime(4726): FATAL EXCEPTION: main 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726): android.view.WindowManager$BadTokenException: Unable to add window -- token android.app.LocalActivityManager$LocalActivityRecord@463430d0 is not valid; is your activity running? 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at android.view.ViewRoot.setView(ViewRoot.java:509) 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177) 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91) 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at android.view.Window$LocalWindowManager.addView(Window.java:424) 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at android.app.Dialog.show(Dialog.java:241) 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at android.app.AlertDialog$Builder.show(AlertDialog.java:802) 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at com.stampii.stampii.mystampii.MyCollectionId$4.onClick(MyCollectionId.java:74) 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at android.view.View.performClick(View.java:2408) 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at android.view.View$PerformClick.run(View.java:8817) 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at android.os.Handler.handleCallback(Handler.java:587) 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at android.os.Handler.dispatchMessage(Handler.java:92) 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at android.os.Looper.loop(Looper.java:144) 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at android.app.ActivityThread.main(ActivityThread.java:4937) 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at java.lang.reflect.Method.invokeNative(Native Method) 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at java.lang.reflect.Method.invoke(Method.java:521) 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
08-14 11:08:33.254: ERROR/AndroidRuntime(4726):  at dalvik.system.NativeStart.main(Native Method) 

我試圖與this，MyCollecionId.this，與添加上下文廣告etc.but我不能得到的東西work.Any想法如何解決這個問題？

Answer 1

Button deactivate = (Button) findViewById(R.id.deactivate); 
     deactivate.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View v) { 
       new AlertDialog.Builder(yourActivity.this) 
       .setTitle("Warning") 
       .setMessage("The collection will be removed completely from the device.You can reactivate it later again.This operation requires internet connection.") 
       .setPositiveButton("Go ahead", new DialogInterface.OnClickListener() { 
        public void onClick(DialogInterface dialog, int which) { 
         Log.d("AlertDialog", "Positive"); 
        } 
       }) 
       .setNegativeButton("Cancel", new DialogInterface.OnClickListener() { 
        public void onClick(DialogInterface dialog, int which) { 
         Log.d("AlertDialog","Negative"); 
        } 
       }) 
       .show();  

      } 

    }); 

嘗試一下，通過你的跑步活動的背景下

Answer 2

試試這個：

Button deactivate = (Button) findViewById(R.id.deactivate); 
     deactivate.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View v) { 
      if(!isFinishing()){ 
       new AlertDialog.Builder(yourActivity.this) 
       .setTitle("Warning") 
       .setMessage("The collection will be removed completely from the device.You can reactivate it later again.This operation requires internet connection.") 
       .setPositiveButton("Go ahead", new DialogInterface.OnClickListener() { 
        public void onClick(DialogInterface dialog, int which) { 
         Log.d("AlertDialog", "Positive"); 
        } 
       }) 
       .setNegativeButton("Cancel", new DialogInterface.OnClickListener() { 
        public void onClick(DialogInterface dialog, int which) { 
         Log.d("AlertDialog","Negative"); 
        } 
       }) 
       .show();  
       } 
      } 

    });