在按钮中单击调用DateFragment，如下所示

dob.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {

            DialogFragment newFragment = new SelectDateFragment();
            newFragment.show(getFragmentManager(), "DatePicker");

        }
    });

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下面是DateFragment的代码片段

public class SelectDateFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener {

        @Override
        public Dialog onCreateDialog(Bundle savedInstanceState) {
        final Calendar calendar = Calendar.getInstance();
        int yy = calendar.get(Calendar.YEAR);
        int mm = calendar.get(Calendar.MONTH);
        int dd = calendar.get(Calendar.DAY_OF_MONTH);
        return new DatePickerDialog(getActivity(), this, yy, mm, dd);
        }

        public void onDateSet(DatePicker view, int yy, int mm, int dd) {
            populateSetDate(yy, mm+1, dd);
        }
        public void populateSetDate(int year, int month, int day) {
            dob.setText(month+"/"+day+"/"+year);
            }

    }

型

这是另一个例子：

Calendar cal = Calendar.getInstance(TimeZone.getDefault()); // Get current date

// Create the DatePickerDialog instance
DatePickerDialog datePicker = new DatePickerDialog(this,
                    R.style.AppBlackTheme, datePickerListener,
                    cal.get(Calendar.YEAR), 
                                        cal.get(Calendar.MONTH),
                    cal.get(Calendar.DAY_OF_MONTH));
            datePicker.setCancelable(false);
            datePicker.setTitle("Select the date");
datePicker.show();

// Listener
private DatePickerDialog.OnDateSetListener datePickerListener = new DatePickerDialog.OnDateSetListener() {

    // when dialog box is closed, below method will be called.
    public void onDateSet(DatePicker view, int selectedYear,
            int selectedMonth, int selectedDay) {
        String year1 = String.valueOf(selectedYear);
        String month1 = String.valueOf(selectedMonth + 1);
        String day1 = String.valueOf(selectedDay);
        TextView tvDt = (TextView) findViewById(R.id.tvDate);
        tvDt.setText(day1 + "/" + month1 + "/" + year1);

    }
};

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首先，我可以说，，选择的答案是工作fine.it是一个很好的方法.但如果你想使用MaterailDatePicker与片段.我发现了一个解决方案.尝试以下设置DatePicker在片段.

grad

dependencies {
  compile 'com.wdullaer:materialdatetimepicker:3.1.3'
}

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DatePickerFragment

package com.wdullaer.datetimepickerexample;

import android.app.Fragment;
import android.graphics.Color;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.TextView;

import com.wdullaer.materialdatetimepicker.date.DatePickerDialog;

import java.util.Calendar;

/**
 * A simple {@link Fragment} subclass.
 */
public class DatePickerFragment extends Fragment implements DatePickerDialog.OnDateSetListener {

    private TextView dateTextView;
    private CheckBox modeDarkDate;
    private CheckBox modeCustomAccentDate;
    private CheckBox vibrateDate;
    private CheckBox dismissDate;
    private CheckBox titleDate;
    private CheckBox showYearFirst;
    private CheckBox showVersion2;
    private CheckBox limitSelectableDays;
    private CheckBox highlightDays;

    public DatePickerFragment() {
        // Required empty public constructor
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.datepicker_layout, container, false);

        // Find our View instances
        dateTextView = (TextView) view.findViewById(R.id.date_textview);
        Button dateButton = (Button) view.findViewById(R.id.date_button);
        modeDarkDate = (CheckBox) view.findViewById(R.id.mode_dark_date);
        modeCustomAccentDate = (CheckBox) view.findViewById(R.id.mode_custom_accent_date);
        vibrateDate = (CheckBox) view.findViewById(R.id.vibrate_date);
        dismissDate = (CheckBox) view.findViewById(R.id.dismiss_date);
        titleDate = (CheckBox) view.findViewById(R.id.title_date);
        showYearFirst = (CheckBox) view.findViewById(R.id.show_year_first);
        showVersion2 = (CheckBox) view.findViewById(R.id.show_version_2);
        limitSelectableDays = (CheckBox) view.findViewById(R.id.limit_dates);
        highlightDays = (CheckBox) view.findViewById(R.id.highlight_dates);

        // Show a datepicker when the dateButton is clicked
        dateButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Calendar now = Calendar.getInstance();
                DatePickerDialog dpd = DatePickerDialog.newInstance(
                        DatePickerFragment.this,
                        now.get(Calendar.YEAR),
                        now.get(Calendar.MONTH),
                        now.get(Calendar.DAY_OF_MONTH)
                );
                dpd.setThemeDark(modeDarkDate.isChecked());
                dpd.vibrate(vibrateDate.isChecked());
                dpd.dismissOnPause(dismissDate.isChecked());
                dpd.showYearPickerFirst(showYearFirst.isChecked());
                dpd.setVersion(showVersion2.isChecked() ? DatePickerDialog.Version.VERSION_2 : DatePickerDialog.Version.VERSION_1);
                if (modeCustomAccentDate.isChecked()) {
                    dpd.setAccentColor(Color.parseColor("#9C27B0"));
                }
                if (titleDate.isChecked()) {
                    dpd.setTitle("DatePicker Title");
                }
                if (highlightDays.isChecked()) {
                    Calendar date1 = Calendar.getInstance();
                    Calendar date2 = Calendar.getInstance();
                    date2.add(Calendar.WEEK_OF_MONTH, -1);
                    Calendar date3 = Calendar.getInstance();
                    date3.add(Calendar.WEEK_OF_MONTH, 1);
                    Calendar[] days = {date1, date2, date3};
                    dpd.setHighlightedDays(days);
                }
                if (limitSelectableDays.isChecked()) {
                    Calendar[] days = new Calendar[13];
                    for (int i = -6; i < 7; i++) {
                        Calendar day = Calendar.getInstance();
                        day.add(Calendar.DAY_OF_MONTH, i * 2);
                        days[i + 6] = day;
                    }
                    dpd.setSelectableDays(days);
                }
                dpd.show(getFragmentManager(), "Datepickerdialog");
            }
        });

        return view;
    }

    @Override
    public void onResume() {
        super.onResume();
        DatePickerDialog dpd = (DatePickerDialog) getFragmentManager().findFragmentByTag("Datepickerdialog");
        if(dpd != null) dpd.setOnDateSetListener(this);
    }

    @Override
    public void onDateSet(DatePickerDialog view, int year, int monthOfYear, int dayOfMonth) {
        String date = "You picked the following date: "+dayOfMonth+"/"+(++monthOfYear)+"/"+year;
        dateTextView.setText(date);
    }
}

型

button_name.setOnTouchListener(new View.OnTouchListener() {
    @Override
    public boolean onTouch(View v, MotionEvent event) {

        switch (event.getAction()){
            case MotionEvent.ACTION_DOWN:
                DatePickerDialog datePickerDialog = DatePickerDialog.newInstance(new DatePickerDialog.OnDateSetListener() {
                     @Override
                     public void onDateSet(DatePickerDialog view, int year, int monthOfYear, int dayOfMonth) {
                         String years=""+year;
                         String months=""+(monthOfYear+1);
                         String days=""+dayOfMonth;
                         if(monthOfYear>=0 && monthOfYear<9){
                             months="0"+(monthOfYear+1);
                         }
                         if(dayOfMonth>0 && dayOfMonth<10){
                             days="0"+dayOfMonth;

                         }
                         race_date.setText(months+"/"+days+"/"+years);
                     }
                 }, now.get(Calendar.YEAR),
                        now.get(Calendar.MONTH),
                        now.get(Calendar.DAY_OF_MONTH));
                datePickerDialog.setMinDate(now);
                datePickerDialog.show(getActivity().getFragmentManager(), "Datepicker");
                break;
        }
        return false;
    }
});

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我推荐一种方法，它也涵盖了SDK的版本。因为应用程序可能会刹车，如果例如SDK 24的构造函数被使用，而应用程序本身在SDK 21上运行。下面的解决方案应该同时适用于片段和活动：

//Initialize datePickerDialog in any onClickEvent (Fro example on certain button click) and show it's contents
DatePickerDialog datePickerDialog = createDatePickerDialog(datePickerDialogOnDateSetListener, activity, null);
datePickerDialog.show();

// Method to create Universal DatePickerDialog no matter the SDK (current supports only SDK 19+)
public DatePickerDialog createUniversalDatePickerDialog(DatePickerDialog.OnDateSetListener datePickerDialogOnDateSetListener, Context context, Calendar calendar) {
        if (calendar == null) {
            calendar = Calendar.getInstance();
        }
        final DatePickerDialog datePickerDialog;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH && Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
            datePickerDialog = new DatePickerDialog(context, R.style.DatePickerDialogTheme, datePickerDialogOnDateSetListener, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH),
                    calendar.get(Calendar.DAY_OF_MONTH));
            datePickerDialog.getDatePicker().setCalendarViewShown(false);
            datePickerDialog.getDatePicker().setSpinnersShown(true);
        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            datePickerDialog = new DatePickerDialog(context, R.style.DatePickerDialogLatestTheme, datePickerDialogOnDateSetListener, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH),
                    calendar.get(Calendar.DAY_OF_MONTH));

            datePickerDialog.getDatePicker().setCalendarViewShown(false);
            datePickerDialog.getDatePicker().setSpinnersShown(true);
        } else {
            datePickerDialog = new DatePickerDialog(context, datePickerDialogOnDateSetListener, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH),
                    calendar.get(Calendar.DAY_OF_MONTH));
        }

        return datePickerDialog;
    }

// the callback received when the user "chooses" the date in the dialog
public DatePickerDialog.OnDateSetListener datePickerDialogOnDateSetListener = new DatePickerDialog.OnDateSetListener() {
       public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
            Calendar selectedDate = Calendar.getInstance();
            selectedDate.set(Calendar.YEAR, year);
            selectedDate.set(Calendar.MONTH, monthOfYear);
            selectedDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd.MM.yyyy");
            date.setText(simpleDateFormat.format(selectedDate.getTime()));
        }
    };

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