DatePicker常用属性：

1.calendarViewShown 设置其是否显示CalenderView组件

2. endYear 允许选择的最后一年

3. maxDate 支持的最大日期

4. minDate 允许选择的最小日期

5. spinnerShown 是否显示Spinner 日期选择组件

6. startYear 设置日期选择器 允许选择的第一年

实际效果：

实例的 布局文件 由 DatePicker 和TimePicker 组成

datePicker.init() 

timePicker.setOnTimeChangedListener()

public class MainActivity extends Activity {
    //定义五个当前时间的变量
    private int year ;
    private int month ;
    private int day ;
    private int hour ;
    private int minute ;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        DatePicker datePicker = (DatePicker) findViewById(R.id.datePicker);
        TimePicker timePicker = (TimePicker) findViewById(R.id.timePicker);
        //获取当前日期/时间
        Calendar calendar = Calendar.getInstance();
        year = calendar.get(Calendar.YEAR);
        month = calendar.get(Calendar.MONTH);
        day = calendar.get(Calendar.DAY_OF_MONTH);
        hour = calendar.get(Calendar.HOUR);
        minute = calendar.get(Calendar.MINUTE);
        //为DatePicker添加监听事件
        datePicker.init(year, month, day, new DatePicker.OnDateChangedListener() {
            @Override
            public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                MainActivity.this.year = year;
                MainActivity.this.month =month ;
                MainActivity.this.day = day;
                //显示用户选择的 日期 和 时间
                showDate(year,month,day,hour,minute);
        //TimePicker选择监听器
        timePicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() {
            @Override
            public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {
                MainActivity.this.hour = hourOfDay;
                MainActivity.this.minute = minute;