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내 앱에서 다음 활동 (곱하기 퀴즈 게임)에서 사용자가 제공 한 질문 및 답변 목록을 표시했습니다. 현재 답변이 잘못 표시되면 빨간색으로 표시되고 올바른 경우 녹색으로 표시됩니다. 목록의 하위 항목은 항상 정답 (녹색)입니다. 답변이 정확하지 않은 경우에만 하위 항목을 표시하려고합니다. 나는. 정답을 두 번 표시 할 필요가 없습니다. 하지만 그렇게하는 방법을 모르겠습니다. 활동Android ListView : 항목에 따라 하위 항목 제거
이미지 (사용자가 이미 정답을 주신 경우에도 하위 항목에 표시되는 방법을 정답 주) : 활동의
코드 :의
public class RandomTestResults extends Activity {
// Set up variables
TextView scoreText;
String phrase;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.testresults);
// List view to hold the test results
ListView itemList = (ListView) findViewById(R.id.lvRandomTestresults);
// getting data from the previous activity via intents
int[] results = getIntent().getIntArrayExtra("results");
String[] questions = getIntent().getStringArrayExtra("Questions");
int[] correctAnswer = getIntent().getIntArrayExtra("CorrectAnswer");
int score = getIntent().getIntExtra("score", 0);
// if else statements to determine what phrase to present to user
if (score <= 4) {
phrase = "Please try again! ";
} else if (score <= 6) {
phrase = "Good effort! ";
} else if (score <= 9) {
phrase = "Well done! ";
} else if (score == 10) {
phrase = "Perfect! ";
}
// Set text to tell user what they scored in test
scoreText = (TextView) findViewById(R.id.tvRandomTestresults);
scoreText.setText(phrase + "You got " + score + " correct out of 10!");
// ArrayList containing Hashmap
ArrayList<HashMap<String, String>> list = new ArrayList<HashMap<String, String>>();
// loop to give list view (10 items and sub items)
for (int i = 1; i <= 10; i++) {
// set userAnswer equal to correct place in results array
int userAnswer = results[i - 1];
// Setting expected answer to correct place in correctAnswer array
int expectedAnswer = correctAnswer[i - 1];
// Set string to present to user
String userString = questions[i - 1] + " " + userAnswer; // mybe
// change
// correct answer
String expectedString = "" + expectedAnswer;
// HashMap containing 2 strings
HashMap<String, String> map = new HashMap<String, String>();
// add strings to HashMap
map.put("user", userString);
map.put("expected", expectedString);
// add HashMap to list
list.add(map);
}
// Instantiate custom array adapter
MyArrayAdapter adapter = new MyArrayAdapter(
this.getApplicationContext(), R.layout.list_row, list,
questions, results);
// Set custom adapter to your ListView.
itemList.setAdapter(adapter);
}
/**
* Method that ensures user is returned
* to main menu when they press back button
*/
@Override
public void onBackPressed() {
Intent t = new Intent(this, Menu.class);
startActivity(t);
}
}
코드 활동과 관련된 어댑터 :
public class MyArrayAdapter extends
ArrayAdapter<ArrayList<HashMap<String, String>>> {
Context mContext;
ArrayList<HashMap<String, String>> mQuestionArrayList;
int mLayoutResourceId;
String[] mQuestionsArray;
int[] mUsersAnswers;
/**
* Constructor with arguments
* @param context
* @param layoutResourceId
* @param questionsArrayList
* @param questionsArray
* @param usersAnswers
*/
public MyArrayAdapter(Context context, int layoutResourceId,
ArrayList<HashMap<String, String>> questionsArrayList,
String[] questionsArray, int[] usersAnswers) {
super(context, layoutResourceId);
mContext = context;
this.mQuestionArrayList = questionsArrayList;
this.mLayoutResourceId = layoutResourceId;
this.mQuestionsArray = questionsArray;
this.mUsersAnswers = usersAnswers;
}
/**
* Method that returns the size
* of the ArrayList
*/
@Override
public int getCount() {
return mQuestionArrayList.size();
}
/**
*
* Method that will get the view to display to user
*/
@Override
public View getView(int position, View row, ViewGroup parent) {
HashMap<String, String> question = mQuestionArrayList.get(position);
//set layout inflater equal to context
LayoutInflater inflater = LayoutInflater.from(mContext);
// Initialize the row layout by inflating the xml file list_row.
row = inflater.inflate(this.mLayoutResourceId, parent, false);
// Initialize TextViews defined in the list_row layout.
TextView questionTxtView = (TextView) row.findViewById(R.id.question);
TextView answerTxtView = (TextView) row.findViewById(R.id.answer);
TextView correctAnswerTxtView = (TextView) row
.findViewById(R.id.correct);
// Set text for each TextView
questionTxtView.setText(mQuestionsArray[position]);
answerTxtView.setText(String.valueOf(mUsersAnswers[position]));
correctAnswerTxtView.setText(question.get("expected").toString());
// Setting colour of the user answer dependent on if its correct
if (mUsersAnswers[position] != Integer.parseInt(question
.get("expected").toString()))
answerTxtView.setTextColor(Color.RED);
else
answerTxtView.setTextColor(Color.GREEN);
return row;
}
}
완벽한, 감사합니다! –