datePicker 及 timePicker 监听事件 获取用户选择 年月日分秒信息

public class MainActivity extends AppCompatActivity {
    private TimePicker timePicker;
    private DatePicker datePicker;
    private Calendar cal;

    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);
        //注册 对象
        timePicker = (TimePicker)findViewById(R.id.timePicker);
        datePicker = (DatePicker)findViewById(R.id.datePicker);

        //获取年月日分秒信息
        cal     = Calendar.getInstance();
        year    = cal.get(Calendar.YEAR);
        month   = cal.get(Calendar.MONTH);
        day     = cal.get(Calendar.DAY_OF_MONTH) + 1 ; //月份从0开始的 所以要加1
        hour    = cal.get(Calendar.HOUR_OF_DAY);
        minute  = cal.get(Calendar.MINUTE);

        //标题显示
        setTitle(year + "-" + month
                +"-"+ day + "-" + hour + ":" + minute );

        //datePicker初始化 设置初始日期
        datePicker.init(year, cal.get(Calendar.MONTH), day, new DatePicker.OnDateChangedListener() {
            @Override
            public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                setTitle(year + "-" + (monthOfYear + 1 )
                        +"-"+ dayOfMonth    );
            }
        });
    }

　　TimePicker 监听事件 例子

        timePicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() {
            @Override
            public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {

                setTitle(hourOfDay + ":" + minute);
            }
        });

　同时监听日期 时间 可以做闹钟

public class MainActivity extends AppCompatActivity {
    private TimePicker timePicker;
    private DatePicker datePicker;
    private Calendar cal;

    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);
        //注册 对象
        timePicker = (TimePicker)findViewById(R.id.timePicker);
        datePicker = (DatePicker)findViewById(R.id.datePicker);

        //获取年月日分秒信息
        cal     = Calendar.getInstance();
        Year    = cal.get(Calendar.YEAR);
        month   = cal.get(Calendar.MONTH) + 1 ;     //月份从0开始的 所以要加1
        day     = cal.get(Calendar.DAY_OF_MONTH)  ;
        hour    = cal.get(Calendar.HOUR_OF_DAY);
        Minute  = cal.get(Calendar.MINUTE);

        //标题显示
        setTitle(Year + "-" + month
                +"-"+ day + "-" + hour + ":" + Minute );

        //datePicker初始化 设置初始日期
        datePicker.init(Year, cal.get(Calendar.MONTH), day, new DatePicker.OnDateChangedListener() {
            @Override
            public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                month = monthOfYear + 1;
                day   = dayOfMonth;
                Year  = year;
                setTitle(Year + "-" + month
                        +"-"+ day + "-" + hour + ":" + Minute );
            }
        });

        timePicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() {
            @Override
            public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {
                hour = hourOfDay;
                Minute = minute;
                setTitle(Year + "-" + month
                        +"-"+ day + "-" + hour + ":" + Minute );

            }
        });
    }