Not able to set Onclicklistener on a editext present in a popup

Question

I have a popup implemented inside an Activity,and i'm trying to add onclicklistener to it,but it shows an error "Trying to invoke virtual method on a null object reference",but i checked the id of the edittext,which is "date_from" in popupdashboard.xml,am i missing something,do i need to add a reference for popdashboard.xml somewhere ??

    public class DashboardActivity2 extends AppCompatActivity implements View.OnClickListener {
ImageView image;
    EditText datefrom,dateto;
    TextView amo_today,amo_yest,increase,percent;


    private PopupWindow active;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_dashboard2);
        datefrom = (EditText)findViewById(R.id.date_from);
        datefrom.setOnClickListener(this);
      dateto = (EditText)findViewById(R.id.date_to);
       dateto.setOnClickListener(this);

any help would be appreciated

Answer 1

Below code contain setup for showing popup window

  active = new PopupWindow(ctx);
  inflater = (LayoutInflater) ctx
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  layout = R.layout.popupdashboard;
  contentView = inflater.inflate(layout, null);
        datefrom = (EditText) contentView.findViewById(R.id.date_from);
  active.setHeight(LayoutParams.WRAP_CONTENT);
        active.setWidth(LayoutParams.WRAP_CONTENT);
  active.setContentView(contentView);
  active.showAtLocation(anchor, Gravity.NO_GRAVITY, position_x,
                position_y);