I am developing an application.I have a button to add some users when I click a button it displays a list of radio buttons which are nothing but users(contacts) where I can select multiple users my problem is that I can select any user a select but i cannot deselect the user which is already selected I have used 

`buttonView.setEnabled(false);`

this statement but I am unable to deselect can any help me.

I have used arrayadapter to display in list view.
this is the following code 

**Main class** 

```
public class Contactselectuser extends Activity {
    Contactadapter contactadapteruser;
    private ArrayList<String> listexample;
    Button conform;
    private ListView list;
    ImageButton close;
    boolean check;
    RadioButton rb;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        this.requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.selectrepresentative);
        conform = (Button) findViewById(R.id.Confirm);
        list = (ListView) findViewById(R.id.selectrecipientslist);
        listexample=new ArrayList<String>();
        getlist();

        close=(ImageButton)findViewById(R.id.close);
        close.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

              finish(); 
            }
        });
      contactadapteruser = new Contactadapter(Contactselectuser.this,              
                                    R.layout.selectrepresentative, listexample);
                   list.setAdapter(contactadapteruser);
      private void getlist() {
        // TODO Auto-generated method stub
        listexample.add("Rep. Name (R)");

        listexample.add("Rep. Name (R)");

        listexample.add("Rep. Name (R)");

        listexample.add("Rep. Name (R)");

        listexample.add("Rep. Name (R)");

        listexample.add("Rep. Name (D)");

        listexample.add("Rep. Name (D)");

        listexample.add("Rep. Name (R)");

        listexample.add("Rep. Name (R)");

        listexample.add("Rep. Name (D)");

        listexample.add("Rep. Name (R)");

        listexample.add("Rep. Name (D)");

        listexample.add("Rep. Name (R)");

    }

        }

```

**Adapter class**
 New adapter class

```
   public class Contactadapter extends ArrayAdapter<String> {
    private Context context;
    boolean value;
    ListView list;
    private ArrayList<String> listexample;
        public Contactadapter(Context con, int layout, ArrayList<String> listexample) {
            super(con, com.arivoli.amev.R.layout.selectrepresentative, listexample);
            this.context = con;
            this.listexample = listexample;
            }

            public View getView(final int position, View convertView, ViewGroup parent) {
                LayoutInflater inflater = (LayoutInflater) context
                        .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                View rowView = inflater.inflate(R.layout.selectradio, parent, false);
                RadioButton rb=(RadioButton) rowView.findViewById(R.id.radioButton1);
                rb.setText(listexample.get(position));
                value = rb.isChecked();
                //Toast.makeText(context, "status"+value, 5000).show();
                rb.setTag(value);
                rb.setOnClickListener(new OnClickListener() {

                    @Override
                    public void onClick(View v) {
                        // TODO Auto-generated method stub
                        RadioButton radio=(RadioButton)v;

                       if(radio.isChecked()){
                           radio.getTag();
                           value = radio.isChecked();
                           radio.setChecked(value);
                           value=false;
                       }else
                       {
                           radio.getTag();
                           radio.setChecked(false);
                            value=true; 
                       }
                       }
                });

                return rowView;

            }

}

```