import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.os.Bundle;
import android.widget.DatePicker;import java.util.Calendar;/*** Created by mac on 17/6/7.*/
public class DatePickerFragment1  extends DialogFragment implements DatePickerDialog.OnDateSetListener{public OnDateInputListener onDateInputListener;//创建接口类public interface OnDateInputListener {//接口函数public void getDate(int year, int month, int day);}public void setOnDateInputListener(OnDateInputListener onDateInputListener) {this.onDateInputListener = onDateInputListener;}@Overridepublic Dialog onCreateDialog(Bundle savedInstanceState) {// Use the current date as the default date in the pickerfinal Calendar c = Calendar.getInstance();int year = c.get(Calendar.YEAR);int month = c.get(Calendar.MONTH);int day = c.get(Calendar.DAY_OF_MONTH);// Create a new instance of DatePickerDialog and return itreturn new DatePickerDialog(getActivity(), this, year, month, day);}public void onDateSet(DatePicker view, int year, int month, int day) {// Do something with the date chosen by the useronDateInputListener.getDate(year, month + 1, day);}}

implements DatePickerFragment1.OnDateInputListener

 DatePickerFragment1 newFragment = new DatePickerFragment1();newFragment.show(getFragmentManager(), "datePicker");newFragment.setOnDateInputListener(this);

public void getDate(int year, int month, int day){button.setText(year+"-"+month+"-"+day);}

   DialogFragment dialogFragment1 = new DatePickerFragment();dialogFragment1.show(getFragmentManager(), "datePicker");