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我正在开发一个“问答”Android 应用程序。当用户选择错误答案时，游戏结束，并且该问题及其答案被导入数据库。但是我有一个问题，我可以将问题及其答案导入数据库，但第二个动作（游戏结束并显示结果）不起作用。我怎样才能解决这个问题？

这是我选择的答案方法：

private void onOptionSelected(String option){

    if(!isGamePaused && !isGameEnded) { 
        ATriviaQuestion tTQuestion = myListOfTriviaQuestions.get(currentQuestionNumber);
        if(option.equals(tTQuestion.GetOptions().get(tTQuestion.GetAnswer() - 1))) {
            correct += 1;
            remainingTime = mySecondsPassed;
            totalPoints += remainingTime * pointsPerRemainingSecond; 
            totalPoints += pointsPerCorrectAnswer;  

        }
        else{ questionsAsked = totalQuestions;
        incorrect += 1;
        totalPoints -= pointsPerWrongAnswer;
        DisplayResults();
        EndGame();


            database db= new database(this);

            db.insertData(new ListOfData(myListOfTriviaQuestions.get(currentQuestionNumber).GetQuestion(),tTQuestion.GetOptions().get(tTQuestion.GetAnswer() - 1)));
            loadListViewData();     ;   
        }

        mySecondsPassed = config.GetTimeToAnswer();
        UpdateTimerColors(mySecondsPassed);

        if(questionsAsked >= totalQuestions){   
            isGameEnded=true;
            EndGame();
            DisplayResults();
        } else {                    

            currentQuestionNumber=GenerateQuestionNumber();
            PopulateQuestion();
        }

    }else{
        PausedOrEndedGameResponse();
    }
}

这是 LogCat：

11-11 01:58:29.763: E/AndroidRuntime(276): FATAL EXCEPTION: main
11-11 01:58:29.763: E/AndroidRuntime(276): java.lang.NullPointerException
11-11 01:58:29.763: E/AndroidRuntime(276):  at pk.aeh.ideos.taa.PlayGame.lietke_congviec(PlayGame.java:633)
11-11 01:58:29.763: E/AndroidRuntime(276):  at pk.aeh.ideos.taa.PlayGame.onOptionSelected(PlayGame.java:229)
11-11 01:58:29.763: E/AndroidRuntime(276):  at pk.aeh.ideos.taa.PlayGame.onClick(PlayGame.java:149)
11-11 01:58:29.763: E/AndroidRuntime(276):  at android.view.View.performClick(View.java:2408)
11-11 01:58:29.763: E/AndroidRuntime(276):  at android.view.View$PerformClick.run(View.java:8816)
11-11 01:58:29.763: E/AndroidRuntime(276):  at android.os.Handler.handleCallback(Handler.java:587)
11-11 01:58:29.763: E/AndroidRuntime(276):  at android.os.Handler.dispatchMessage(Handler.java:92)
11-11 01:58:29.763: E/AndroidRuntime(276):  at android.os.Looper.loop(Looper.java:123)
11-11 01:58:29.763: E/AndroidRuntime(276):  at     android.app.ActivityThread.main(ActivityThread.java:4627)
11-11 01:58:29.763: E/AndroidRuntime(276):  at     java.lang.reflect.Method.invokeNative(Native Method)
11-11 01:58:29.763: E/AndroidRuntime(276):  at java.lang.reflect.Method.invoke(Method.java:521)
11-11 01:58:29.763: E/AndroidRuntime(276):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
11-11 01:58:29.763: E/AndroidRuntime(276):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
11-11 01:58:29.763: E/AndroidRuntime(276):  at dalvik.system.NativeStart.main(Native Method)
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