Styjun

[Sample project download link]

I'm having a tutorial quiz app working on. I have some questions and every question has three answers as 3 radio buttons inside a radio group. The problem is when I use setId for radio buttons i get answers replaced so question number 1 gets answers of questions number 5 and so on which makes everything wrong. when I don't setId for radio buttons I get answers placed correctly for everyquestion but the problem now is when I submit the answer of a question it sumbits another question too because radio buttons don't have ids to catch while listening to the submit button click.

I tried to setId again but the same issue is replacing answers between questions. How can I specify different id for each radio button? I tried to make randon number but it's duplicated for the first hidden question when scrolling down.

public class QuestionsAdapter extends ArrayAdapter<Questions> 

public QuestionsAdapter(Activity context, ArrayList<Questions> questions) 
 super(context, 0, questions);


private int t;
Random ran = new Random();
// Assumes max and min are non-negative.

@NonNull
@Override
public View getView(int position, View convertView, ViewGroup parent) 

 View listItemView = convertView;
 if (listItemView == null) 
 listItemView = LayoutInflater.from(getContext()).inflate(R.layout.list_item, parent, false);
 
 //styling odd and even items
 if (position % 2 == 1) 
 listItemView.setBackgroundColor(getContext().getResources().getColor(R.color.odd));
 else 
 listItemView.setBackgroundColor(getContext().getResources().getColor(R.color.even));
 

 //used ViewHolder to prevent triggering position null issue
 final ViewHolder viewHolder = new ViewHolder();

 try 
 final Questions currentQuestion = getItem(position);

 String question = currentQuestion.getQuestionTitle();
 String option_1 = currentQuestion.getQuestionAnswer1();
 String option_2 = currentQuestion.getQuestionAnswer2();
 String option_3 = currentQuestion.getQuestionAnswer3();
 int q_id = currentQuestion.getQID();

 viewHolder.questionTextView = (TextView) listItemView.findViewById(R.id.q_text);
 viewHolder.questionTextView.setText(question);

 viewHolder.radioGroup = (RadioGroup) listItemView.findViewById(R.id.q_answers);

 viewHolder.firstAnswer = (RadioButton) listItemView.findViewById(R.id.q_option1);
 viewHolder.firstAnswer.setText(option_1);

 viewHolder.secondAnswer = (RadioButton) listItemView.findViewById(R.id.q_option2);
 viewHolder.secondAnswer.setText(option_2);

 viewHolder.thirdAnswer = (RadioButton) listItemView.findViewById(R.id.q_option3);
 viewHolder.thirdAnswer.setText(option_3);

 final TextView resultTextView = (TextView) listItemView.findViewById(R.id.result_text);

 final Button viewAnswer = (Button) listItemView.findViewById(R.id.view_answer_btn);
 viewAnswer.setOnClickListener(new View.OnClickListener() 
 @Override
 public void onClick(View v) 
 if(viewHolder.radioGroup.getCheckedRadioButtonId()!=-1)

 //getting checked radio button and save it's text in a string
 int selectedAnswerId = viewHolder.radioGroup.getCheckedRadioButtonId();
 View radioButton = viewHolder.radioGroup.findViewById(selectedAnswerId);
 int radioId = viewHolder.radioGroup.indexOfChild(radioButton);
 RadioButton btn = (RadioButton) viewHolder.radioGroup.getChildAt(radioId);
 String selection = (String) btn.getText();

 //displaying the empty result TextView
 resultTextView.setVisibility(View.VISIBLE);

 //if answer is correct (selection equals the answer in the array
 if( selection == currentQuestion.getCorrect() )

 //increasing score by 1
 MainActivity.score += 1;

 //displaying the score
 MainActivity.scoreTextView.setText(getContext().getResources().getString(R.string.score_is) +
 MainActivity.score + "/" + MainActivity.arraySize);

 //displaying the result after submitting the answer of this question
 resultTextView.setText(selection + " " + getContext().getResources().getString(R.string.correct));

 //changing color of the result to green
 resultTextView.setTextColor(getContext().getResources().getColor(R.color.green));
 
 else

 //displaying the result after submitting the answer of this question
 resultTextView.setText(getContext().getResources().getString(R.string.wrong_answer) + " " +
 currentQuestion.getCorrect());

 //changing color of the result to red
 resultTextView.setTextColor(getContext().getResources().getColor(R.color.red));
 

 //hiding the button and RadioGroup of this question
 viewHolder.radioGroup.setVisibility(View.GONE);
 viewAnswer.setVisibility(View.GONE);
 
 else
 Toast.makeText(getContext(),getContext().getResources().getString(R.string.Choose_answer_first),
 Toast.LENGTH_SHORT).show();
 
 
 );

 catch (Exception e) 
 e.printStackTrace();
 

 return listItemView;


 private class ViewHolder 
 TextView questionTextView;
 RadioGroup radioGroup;
 RadioButton firstAnswer, secondAnswer,thirdAnswer;