public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

          final String participant =
              chatClientInterface.getParticipantNames(getContentResolver())[position];

          if (participant.charAt(participant.length() - 2) == 'N') {
            new AlertDialog.Builder(ParticipantsActivity.this)
                .setTitle("Create Contact")
                .setMessage(
                    "Create contact for "
                        + participant.substring(0, participant.length() - 4)
                        + " ?")
                .setPositiveButton(
                    android.R.string.yes,
                    new DialogInterface.OnClickListener() {
                      public void onClick(DialogInterface dialog, int which) {
                        addContact(participant.substring(0, participant.length() - 4));

                        Context context = getApplicationContext();
                        CharSequence text = "Contact created!";
                        int duration = Toast.LENGTH_SHORT;

                        Toast toast = Toast.makeText(context, text, duration);
                        toast.show();

                        finish();
                      }
                    })
                .setNegativeButton(
                    android.R.string.no,
                    new DialogInterface.OnClickListener() {
                      public void onClick(DialogInterface dialog, int which) {
                        finish();
                      }
                    })
                .setIcon(android.R.drawable.ic_dialog_alert)
                .show();

          } else {
            finish();
          }
        }
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    Bundle extras = getIntent().getExtras();
    if (extras != null) {
      nickname = extras.getString("nickname");
    }

    try {
      chatClientInterface =
          MicroRuntime.getAgent(nickname).getO2AInterface(ChatClientInterface.class);
    } catch (StaleProxyException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (ControllerException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }

    myReceiver = new MyReceiver();

    IntentFilter refreshParticipantsFilter = new IntentFilter();
    refreshParticipantsFilter.addAction("jade.demo.chat.REFRESH_PARTICIPANTS");
    registerReceiver(myReceiver, refreshParticipantsFilter);

    setContentView(R.layout.participants);

    setListAdapter(
        new ArrayAdapter<String>(
            this, R.layout.participant, chatClientInterface.getParticipantNames()));

    ListView listView = getListView();
    listView.setTextFilterEnabled(true);
    listView.setOnItemClickListener(listViewtListener);
  }