<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
                android:layout_width="match_parent"
                android:layout_height="match_parent" >

    <DatePicker
        android:id="@+id/datePicker"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:startYear="2015"
        android:endYear="2020"
        android:calendarViewShown="true"
        android:spinnersShown="true" />
</RelativeLayout>

package com.jinyu.cqkxzsxy.android.advancedviewsample;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.DatePicker;
import android.widget.Toast;

import java.util.Calendar;

/**
 * @创建者 鑫鱻
 * @描述 Android零基础入门到精通系列教程，欢迎关注微信公众号ShareExpert
 */
public class DatePickerActivity extends AppCompatActivity {
    private DatePicker mDatePicker = null; // 日期选择器
    private Calendar mCalendar = null; // 日历
    private int mYear; // 年
    private int mMonth; // 月
    private int mDay; // 日

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.datepicker_layout);

        // 获取日历对象
        mCalendar = Calendar.getInstance();
        // 获取当前对应的年、月、日的信息
        mYear = mCalendar.get(Calendar.YEAR);
        mMonth = mCalendar.get(Calendar.MONTH);
        mDay = mCalendar.get(Calendar.DAY_OF_MONTH);

        // 获取DatePicker组件
        mDatePicker = (DatePicker) findViewById(R.id.datePicker);
        // DatePicker初始化
        mDatePicker.init(mYear, mMonth, mDay, new DatePicker.OnDateChangedListener() {
            @Override
            public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                Toast.makeText(DatePickerActivity.this,
                        year + "年" + (monthOfYear + 1) + "月" + dayOfMonth + "日",
                        Toast.LENGTH_SHORT).show();
            }
        });
    }
}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
                android:layout_width="match_parent"
                android:layout_height="match_parent" >

    <TimePicker
        android:id="@+id/timePicker"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal" />
</RelativeLayout>

package com.jinyu.cqkxzsxy.android.advancedviewsample;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.TimePicker;
import android.widget.Toast;

import java.util.Calendar;

/**
 * @创建者 鑫鱻
 * @描述 Android零基础入门到精通系列教程，欢迎关注微信公众号ShareExpert
 */
public class TimePickerActivity extends AppCompatActivity {
    private TimePicker mTimePicker = null; // 时间选择器
    private Calendar mCalendar = null; // 日历
    private int mHour; // 时
    private int mMinute; // 分

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.timepicker_layout);

        // 获取日历对象
        mCalendar = Calendar.getInstance();
        // 获取对应的时、分的信息
        mHour = mCalendar.get(Calendar.HOUR_OF_DAY);
        mMinute = mCalendar.get(Calendar.MINUTE);

        // 获取TimePicker组件
        mTimePicker = (TimePicker) findViewById(R.id.timePicker);
        // 为TimePicker指定监听器
        mTimePicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() {
            @Override
            public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {
                Toast.makeText(TimePickerActivity.this, hourOfDay + ":" + minute,
                        Toast.LENGTH_SHORT).show();
            }
        });
    }
}