I have a list of 10 multiple choice questions and each question have a "RadioGroup". But when ever I'm selecting a option for a question, some of the options of other questions are getting automagically selected.
Suppose I selected a option for question - 1. then question numbers - 5, 9 are automatically selected with the same option.
When I select a option for question - 2, question numbers - 6, 10 are automatically selected with the same option.
This shouldn't be happen. When ever I select a option, only that option in that RadioGroup should get checked. Please help me to fix this.
I'm developing an Mobile Based Test. When ever the user enters his username and password, the server will authenticates that. For authorized users, it will returns a question paper as a JSONObject. And Each exam will have an exam_id and a list of 10 Multiple Choice Questions while each question have one unique "id", "question" and four options "A","B","C" and "D" as follows. The "questions" object is a JSONArray.
{
"exam_id": 0,
"questions": [
{
"A": "A",
"C": "c",
"B": "b",
"D": "d",
"question": "A",
"id": 1,
},
{
"A": "a",
"C": "c",
"B": "B",
"D": "d",
"question": "B",
"id": 2,
},
....
....
]
}
By using ListAdapter, I'm trying to assign these values to a list. Here is the Activity for that...
public class MBTExam extends ListActivity {
JSONObject result;
String exam_id;
JSONArray question_list_json;
ArrayList<String> question_list;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test);
Bundle extras = getIntent().getExtras();
try {
result = new JSONObject(extras.getString("result"));
exam_id = result.getString("exam_id");
question_list_json = result.getJSONArray("questions");
ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>();
for (int i = 1; i <= question_list_json.length() ; i++) {
HashMap<String, String> map = new HashMap<String, String>();
JSONObject e = question_list_json.getJSONObject(i-1);
map.put("id", new Integer(i).toString());
map.put("question", e.getString("question"));
map.put("A", e.getString("A"));
map.put("B", e.getString("B"));
map.put("C", e.getString("C"));
map.put("D", e.getString("D"));
mylist.add(map);
}
ListAdapter adapter = new SimpleAdapter(this,
mylist,
R.layout.mbt_test,
new String[] { "id", "question", "A", "B", "C", "D" },
new int[] { R.id.question_no, R.id.question, R.id.A, R.id.B, R.id.C, R.id.D });
setListAdapter(adapter);
} catch (JSONException e) {
Log.e("log_tag", "Error parsing data " + e.toString());
}
}
}
Here is the row layout for each question
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="top" >
<TextView
android:id="@+id/question_no"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignWithParentIfMissing="true" />
<TextView
android:id="@+id/white_space"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/question_no"
android:text="@string/white_space" />
<TextView
android:id="@+id/question"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/white_space" />
<RadioGroup
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/question" >
<RadioButton
android:id="@+id/A"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<RadioButton
android:id="@+id/B"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<RadioButton
android:id="@+id/C"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<RadioButton
android:id="@+id/D"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RadioGroup>
</RelativeLayout>
and here is the layout for the "MBTExam"
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="top" >
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/android:list">
</ListView>
<Button
android:id="@+id/submit"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="Submit"/>
</LinearLayout>
Also, Along with the questions, I have to get a submit button at the end of the paper. Please suggest me the necessary changes in my layout code.
Here is my complete source code
Thanks in advance.
