@Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.meeting);

    meetingId = getIntent().getIntExtra("id", -1);
    if (meetingId != -1) MeetingsController.getMeeting(MeetingActivity.this, meetingId);
    else Toast.makeText(MeetingActivity.this, "Something wrong", Toast.LENGTH_SHORT).show();

    listParticipants = ((ListView) findViewById(R.id.metListViewParticipants));
    findViewById(R.id.metButtonDelete)
        .setOnClickListener(
            new View.OnClickListener() {
              @Override
              public void onClick(View v) {
                MeetingsController.deleteMeeting(MeetingActivity.this, meetingId);
              }
            });
    findViewById(R.id.metButtonAccept)
        .setOnClickListener(
            new View.OnClickListener() {
              @Override
              public void onClick(View v) {
                MeetingsController.acceptUser(
                    MeetingActivity.this,
                    meetingId,
                    UserController.newInstance(MeetingActivity.this).getLogIn());
              }
            });
  }
 public void updateParticipants() {
   if (meetingId != -1) MeetingsController.getMeeting(MeetingActivity.this, meetingId);
 }