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POAndroid toast message (identify the correct answer using radio button)
 

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  1. POAndroid toast message (identify the correct answer using radio button)
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    <p>I'm developing a quiz. I got an error while showing my toast message. The error is, if the user taps the correct answer, toast says it is the wrong answer even if I tap the correct choice. Help is really appreciated! Here is the code:</p> <pre><code>public class Question2 extends Activity { /** Called when the activity is first created. */ TextView question, items = null; RadioButton answer1 = null; RadioButton answer2 = null; RadioButton answer3 = null; RadioGroup answers = null; int selectedAnswer = -1; int quesIndex = 0; int numEvents = 0; int selected[] = null; int correctAns[] = null; boolean review = false; Button next = null; int score = 0; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.startquiz); try { score = getIntent().getIntExtra("score",0); items = (TextView)findViewById(R.id.displayitems); question = (TextView) findViewById(R.id.displayquestion); answer1 = (RadioButton) findViewById(R.id.option1); answer2 = (RadioButton) findViewById(R.id.option2); answer3 = (RadioButton) findViewById(R.id.option3); answers = (RadioGroup) findViewById(R.id.QueGroup1); next = (Button) findViewById(R.id.selected); next.setOnClickListener(nextListener); selected = new int[Question1.getQuesList().length()]; java.util.Arrays.fill(selected, -1); correctAns = new int[Question1.getQuesList().length()]; java.util.Arrays.fill(correctAns, -1); this.showQuestion(0, review); } catch (Exception e) { Log.e("", e.getMessage().toString(), e.getCause()); } } private void showQuestion(int qIndex, boolean review) { try { JSONObject aQues = Question1.getQuesList().getJSONObject( qIndex); String quesValue = aQues.getString("Question"); if (correctAns[qIndex] == -1) { String correctAnsStr = aQues.getString("CorrectAnswer"); correctAns[qIndex] = Integer.parseInt(correctAnsStr); } question.setText(quesValue.toCharArray(), 0, quesValue.length()); answers.check(-1); answer1.setTextColor(Color.BLACK); answer2.setTextColor(Color.BLACK); answer3.setTextColor(Color.BLACK); JSONArray ansList = aQues.getJSONArray("Answers"); String aAns = ansList.getJSONObject(0).getString("Answer"); answer1.setText(aAns.toCharArray(), 0, aAns.length()); aAns = ansList.getJSONObject(1).getString("Answer"); answer2.setText(aAns.toCharArray(), 0, aAns.length()); aAns = ansList.getJSONObject(2).getString("Answer"); answer3.setText(aAns.toCharArray(), 0, aAns.length()); Log.d("", selected[qIndex] + ""); if (selected[qIndex] == 0) answers.check(R.id.option1); if (selected[qIndex] == 1) answers.check(R.id.option2); if (selected[qIndex] == 2) answers.check(R.id.option3); setText(); if (quesIndex == (Question1.getQuesList().length() - 1)) next.setEnabled(false); if (quesIndex &lt; (Question1.getQuesList().length() - 1)) next.setEnabled(true); if (review) { Log.d("review", selected[qIndex] + "" + correctAns[qIndex]); ; if (selected[qIndex] != correctAns[qIndex]) { if (selected[qIndex] == 0) answer1.setTextColor(Color.RED); if (selected[qIndex] == 1) answer2.setTextColor(Color.RED); if (selected[qIndex] == 2) answer3.setTextColor(Color.RED); } if (correctAns[qIndex] == 0) answer1.setTextColor(Color.GREEN); if (correctAns[qIndex] == 1) answer2.setTextColor(Color.GREEN); if (correctAns[qIndex] == 2) answer3.setTextColor(Color.GREEN); } } catch (Exception e) { Log.e(this.getClass().toString(), e.getMessage(), e.getCause()); } } private void setAnswer() { if (answer1.isChecked()) selected[quesIndex] = 0; if (answer2.isChecked()) selected[quesIndex] = 1; if (answer3.isChecked()) selected[quesIndex] = 2; Log.d("", Arrays.toString(selected)); Log.d("", Arrays.toString(correctAns)); } private OnClickListener nextListener = new OnClickListener() { public void onClick(View v) { for(int i=0; i&lt;correctAns.length; i++){ if ((correctAns[i] != -1) &amp;&amp; (correctAns[i] == selected[i])) { score++; Toast.makeText(getApplicationContext(), "Your answer is correct!", Toast.LENGTH_SHORT).show(); }else { Toast.makeText(getApplicationContext(), "Your answer is wrong...", Toast.LENGTH_SHORT).show(); } } quesIndex++; try { if (quesIndex &gt;= Question1.getQuesList().length()) quesIndex = Question1.getQuesList().length() - 1; } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } showQuestion(quesIndex, review); } }; private void setText() throws JSONException { this.setTitle("Question " + (quesIndex + 1) + " out of " + Question1.getQuesList().length()); items.setGravity(250); } public void reload() { setAnswer(); Intent intent = getIntent(); overridePendingTransition(0, 0); intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION); finish(); overridePendingTransition(0, 0); startActivity(intent); } </code></pre>
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    1. USuser2079544
    1. USuser2079544
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      1. VTUpMod
    1. COdebug your code with the break point at the if condition and check the values of correctAns[i] and that of selected[i] is it fulfilling the required condition i think there is an issue with the conditioning or with the values of both these check these 1st
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      1. POAndroid toast message (identify the correct answer using radio button)
      1. USUsman Kurd
    2. COWhat are the declarations of `correctAns` and `selected`? If they are both `String[]`, then you need to use `equals()` for comparison, not `==`.
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      1. USCode-Apprentice
    3. COcan u post, how u have initialized and put value in `correctAns` and `selected`
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      1. POAndroid toast message (identify the correct answer using radio button)
      1. USShoshi
 

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