date picker pop up and implementation

DatePickerFragment.java

ANDROID
==================================================================================================================================

package dsbmobile.com.drokasa.ui.dialog;

import android.app.AlertDialog;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.os.Bundle;
import android.widget.DatePicker;

import java.util.Calendar;
import java.util.Date;

public class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener {
    private int idPicker;
    IDialogAceptar mListener;

    public void setListener(IDialogAceptar mListener) {
        this.mListener = mListener;
    }

    public interface IDialogAceptar {
        void dialog_aceptar(Date date);
    }

    @Override
    public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.YEAR,year);
        calendar.set(Calendar.MONTH,month);
        calendar.set(Calendar.DAY_OF_MONTH,dayOfMonth);
        mListener.dialog_aceptar(calendar.getTime());
    }
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        final Calendar c = Calendar.getInstance();
        int year = c.get(Calendar.YEAR);
        int month = c.get(Calendar.MONTH);
        int day = c.get(Calendar.DAY_OF_MONTH);
        return new android.app.DatePickerDialog(getActivity(),
                AlertDialog.THEME_HOLO_LIGHT, this, year, month, day);
    }
}

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IMPLEMENTATION
================================================================================================================================
private Date currentDate;
private SimpleDateFormat dateFormat;
private DatePickerFragment dateFragment;

 if (dateFragment == null){
     dateFragment = new DatePickerFragment();
     dateFragment.setListener(PaymentOptionActivity.this);
     dateFragment.show(getFragmentManager(), "datePicker");
 }

@Override
    public void dialog_aceptar(Date date) {
        currentDate = date;
        edtDate.setText(dateFormat.format(currentDate));
    }
    
dateFormat = new SimpleDateFormat("dd/MM/yyyy");
        try {
            currentDate = dateFormat.parse(Util.getDate());
        } catch (ParseException e) {
            e.printStackTrace();
        }