Android: how can i display chronometer from another layout in dialog

Question

chronometer = findViewById(R.id.chronometer);

how can i display chronometer from another layout in dialog?

public class StopDialog extends DialogFragment{
     public static Button bt;
     public static View stopdialogView;
     public static  Chronometer ch;
    public static  Chronometer ch1;
        public StopDialog(){}
        @Nullable
        @Override
        public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
            getDialog().requestWindowFeature(Window.FEATURE_NO_TITLE);
            stopdialogView = View.inflate( getActivity(), R.layout.stopdialog, null );
            bt= stopdialogView.findViewById( R.id.button );
            //
            //
            //

i want to replace this chronometer to another chronometer?
I tried getText, getFormat, getBase, etc, but none of them could work.

            //
            //
            ch = (Chronometer) stopdialogView.findViewById( R.id.stoptimer);
            bt.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view){

                    if (MainActivity.p==3){
                        click1();
                    }else{
                        click2();
                    }
                    dismiss();
                }
            });
        return stopdialogView;
        }
    public void click1(){
            //MainActivity.chronometer.setBase( SystemClock.elapsedRealtime());
            MainActivity.chronometer.stop();
        }
        public void click2(){

            //MainActivity.chronometer1.setBase( SystemClock.elapsedRealtime());
            MainActivity.chronometer1.stop();
        }
    }