测验应用程序，改变错误的答案选择错误和正确的答案的颜色，android

Question

我正在一个android测验应用程序，我需要改变按钮的颜色时，选择了错误的答案。如果他们选择的按钮是错误的，我将它设置为已经改变颜色或者如果它们选择的按钮是正确的，则为。那么，如果选择了错误的答案，最好的方法是用正确的答案改变按钮的颜色？如果这是有道理的。基本上我需要有2个按钮，当你选择错误的答案时颜色会改变。红色代表他们选择错误的答案，绿色代表正确的答案，他们显然没有选择。答案也在洗牌，所以不知道如何判断哪一个是正确的。

也尝试拼写出来，给我的例子，因为我只是让我的脚在所有这些湿！它运行在一个片段中，如果任何人有任何关于如何简化任何东西或修复错误代码的指示，请随时告诉我，因为我刚开始学习，需要我可以获得的所有帮助。

这里是我的onActivityCreated

@Override 
public void onActivityCreated(Bundle savedInstanceState) { 
    super.onActivityCreated(savedInstanceState); 

    timesUp = (TextView)getActivity().findViewById(R.id.times_up); 
    timesUp.setVisibility(View.INVISIBLE); 

    Bundle c; 
    c = getArguments(); 
    String setCategory = c.getString("category"); 

    QuizHelper db = new QuizHelper(this.getActivity()); // my question bank class 
    quesList = db.getAllQuestions(setCategory); // this will fetch all quetonall questions 

    currentQ = quesList.get(qid); 

    txtQuestion = (TextView)getActivity().findViewById(R.id.txtQuestion); 
    // the textview in which the question will be displayed 

    // the buttons, 
    // the idea is to set the text of the buttons with the options from question bank 
    button1 = (Button)getActivity().findViewById(R.id.button1); 
    button2 = (Button)getActivity().findViewById(R.id.button2); 
    button3 = (Button)getActivity().findViewById(R.id.button3); 
    button4 = (Button)getActivity().findViewById(R.id.button4); 

    //set buttons white 
    button1.setBackgroundColor(Color.WHITE); 
    button2.setBackgroundColor(Color.WHITE); 
    button3.setBackgroundColor(Color.WHITE); 
    button4.setBackgroundColor(Color.WHITE); 

    // the textview in which score will be displayed 
    scored = (TextView)getActivity().findViewById(R.id.score); 
    scored.setText(getResources().getString(R.string.current_score, score)); 

    // the timer 
    times = (TextView)getActivity().findViewById(R.id.timers); 

    // method which will set the things up for our game 
    allAnswers.clear(); 
    setQuestionView(); 
    times.setText(getResources().getString(R.string.start_time)); 

    // Start timer 
    timer.start(); 

    // button click listeners 
    // passing the button text to other method 
    // to check whether the answer is correct or not 
    // same for all three buttons 
    button1.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      getAnswer(button1); 
     } 
    }); 

    button2.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      getAnswer(button2); 
     } 
    }); 

    button3.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      getAnswer(button3); 
     } 
    }); 

    button4.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      getAnswer(button4); 
     } 
    }); 

} 

这里是我的的getAnswer（）（缩短一点）

public void getAnswer(TextView AnswerString) { 

    String option = AnswerString.getText().toString(); 

    //If timer is running stop and restart 
    if(timer != null) { 
     timer.cancel(); // Stop Timer 
     timer.start(); // Start timer 
    } 

    if (currentQ.getANSWER().equals(option)) { 

     // if conditions matches increase the int (score) by 1 
     // and set the text of the score view 
     score++; 
     scored.setText(getResources().getString(R.string.current_score, score)); 
     AnswerString.setBackgroundColor(Color.GREEN); 
    } else { 

     //If answer is wrong change button colors 

     AnswerString.setBackgroundColor(Color.RED); 
     //WrongAnswer.setBackgroundColor(Color.GREEN); 

     handler.postDelayed(new Runnable() { 
      @Override 
      public void run() { 

       //Load ResultFragment()...      

      } 
     }, 1000); 
     return; 

    } 
    if (qid < 25) { 

     handler.postDelayed(new Runnable() { 
      @Override 
      public void run() { 

       // if questions are not over then do this 
       currentQ = quesList.get(qid); 
       allAnswers.clear(); 

       //set all buttons white for next question 
       button1.setBackgroundColor(Color.WHITE); 
       button2.setBackgroundColor(Color.WHITE); 
       button3.setBackgroundColor(Color.WHITE); 
       button4.setBackgroundColor(Color.WHITE); 

       setQuestionView(); 

      } 
     }, 1000); 

    } else { 

     // if "game over" (qid>25) do this 
     //Load ResultFragment()... 

} 

最后我questionView（）

private void setQuestionView() { 

    allAnswers.add(currentQ.getOPTA()); 
    allAnswers.add(currentQ.getOPTB()); 
    allAnswers.add(currentQ.getOPTC()); 
    allAnswers.add(currentQ.getOPTD()); 

    Collections.shuffle(allAnswers); 

    txtQuestion.setText(currentQ.getQUESTION()); 
    button1.setText(allAnswers.get(0)); 
    button2.setText(allAnswers.get(1)); 
    button3.setText(allAnswers.get(2)); 
    button4.setText(allAnswers.get(3)); 

    qid++; 
} 

感谢您的帮助！

Answer 1

编辑

你可以得到按钮上的文字：从getAnswer(Button selectedButton)错误的答案场

获取答案

// for currentQ.getANSWER().equals(option) 
String option = selectedButton.getText(); 

之前编辑

调用此

//match DB answer to selected answer, turn it green if it is correct 
if(button1.getText().equals(answerText)){ 
    button1.setBackgroundColor(Color.GREEN); 
} else if(button2.getText().equals(answerText)){ 
    button2.setBackgroundColor(Color.GREEN); 
} else if(button3.getText().equals(answerText)){ 
    button3.setBackgroundColor(Color.GREEN); 
} else if(button4.getText().equals(answerText)){ 
    button4.setBackgroundColor(Color.GREEN); 
} 

选项2：

// match DB answer to selected answer, turn it green if it is correct 
ArrayList buttonList = new ArrayList(); 
buttonList.add(button1); 
buttonList.add(button2); 
buttonList.add(button3); 
buttonList.add(button4); 

for(Button button : buttonList){ 
    if(button.getText().equals(answerText)){ 
     button.setBackgroundColor(Color.GREEN); 
     break; 
    } 
} 

注：从您的数据库，并与您的所有按钮的getText()

// because you found out that selected answer/button was wrong 
selectedButton.setBackgroundColor(Color.RED); 

// take real answer from DB and store in String, probably you've already done this 
String answerText = "take-answer-from-database"; 

选项1相匹配，如果您getAnswer(Button)是在不同的课程中，只需制作你的按钮全球和public，那么，他们的类对象来访问他们

让我知道如果你需要更多的帮助