在Android中完成count_downtimer時顯示自定義對話框消息

Question

我正在實現有趣的遊戲倒數計時器。我想在完成一分鐘後顯示自定義對話框。我試過，當運行應用程序它運行正常，但我得到了像FATAL EXCEPTION的異常。我嘗試了很多，每次都會遇到異常。

這是我在我的活動中倒數計時器的代碼。

new CountDownTimer(60*1*1000, 1000) 
     { 

      @Override 
      public void onTick(long millisUntilFinished) 
      { 
       textView_TimerValue.setText("seconds remaining : " 
         + millisUntilFinished/1000); 
      } 

     @Override 
     public void onFinish() 
      { 

      textView_TimerValue.setText("TIME IS OVER"); 
      //tell the Dialog to use the dialog.xml as it's layout description 
       dialog = new Dialog(Gsk_Demo.this); 

       dialog.setContentView(R.layout.dialogbox_); 

       TextView txt = (TextView) dialog.findViewById(R.id.textV); 
       txt.setText("Your Time Is Over.Click Next."); 

       Button dialogButton1 = (Button) dialog.findViewById(R.id.buttonDialog_Next); 

       dialogButton1.setOnClickListener(new OnClickListener() { 
        @Override 
        public void onClick(View v) { 
         Intent i=new Intent(Gsk_Demo.this , Code_Demo.class); 
         startActivity(i); 

        } 
       }); 

       dialog.show(); 
      } 
     }.start(); 

這裏是我的日誌貓堆棧跟蹤。

11-20 15:22:44.158: E/AndroidRuntime(1211): FATAL EXCEPTION: main 
11-20 15:22:44.158: E/AndroidRuntime(1211): android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@4059c040 is not valid; is your activity running? 
11-20 15:22:44.158: E/AndroidRuntime(1211):  at android.view.ViewRoot.setView(ViewRoot.java:527) 
11-20 15:22:44.158: E/AndroidRuntime(1211):  at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177) 
11-20 15:22:44.158: E/AndroidRuntime(1211):  at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91) 
11-20 15:22:44.158: E/AndroidRuntime(1211):  at android.view.Window$LocalWindowManager.addView(Window.java:424) 
11-20 15:22:44.158: E/AndroidRuntime(1211):  at android.app.Dialog.show(Dialog.java:241) 
11-20 15:22:44.158: E/AndroidRuntime(1211):  at com.gsk.Gsk_Demo$1.onFinish(Gsk_Demo.java:124) 
11-20 15:22:44.158: E/AndroidRuntime(1211):  at android.os.CountDownTimer$1.handleMessage(CountDownTimer.java:118) 
11-20 15:22:44.158: E/AndroidRuntime(1211):  at android.os.Handler.dispatchMessage(Handler.java:99) 
11-20 15:22:44.158: E/AndroidRuntime(1211):  at android.os.Looper.loop(Looper.java:123) 
11-20 15:22:44.158: E/AndroidRuntime(1211):  at android.app.ActivityThread.main(ActivityThread.java:3683) 
11-20 15:22:44.158: E/AndroidRuntime(1211):  at java.lang.reflect.Method.invokeNative(Native Method) 
11-20 15:22:44.158: E/AndroidRuntime(1211):  at java.lang.reflect.Method.invoke(Method.java:507) 
11-20 15:22:44.158: E/AndroidRuntime(1211):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 
11-20 15:22:44.158: E/AndroidRuntime(1211):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 
11-20 15:22:44.158: E/AndroidRuntime(1211):  at dalvik.system.NativeStart.main(Native Method) 

Answer 1

試試這個，希望這會爲你工作

final Dialog dialog = new Dialog(context); 
       dialog.setContentView(R.layout.camgaldialog); 
       dialog.setTitle("Complete action using"); 
       Button dialogcam = (Button) dialog.findViewById(R.id.Bcam); 
       dialogcam.setOnClickListener(new OnClickListener() { 

        @Override 
        public void onClick(View view0) { 
         // TODO Auto-generated method stub 
         Intent i = new Intent(
           android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 
         startActivityForResult(i, 0); 
         dialog.dismiss(); 
        } 

       }); 
       dialog.show(); 
       break;