Android攻城狮datePicke&timePicker

DatePicker
1.month在机器中运行时是从0开始的，在sdk方法中使用一律采用不加1的方式，只有当用于显示时才手动加1；
2.获取日期实例并初始化并打印：
Calendar cal=Calendar.getInstance();
3.获取当前日期及时间：
int year=cal.get(Calendar.YEAR);
int month=cal.get(Calendar.MONTH)+1;
int day=cal.get(Calendar.DAY_OF_MONTH);
int hour=cal.get(Calendar.HOUR_OF_DAY);
int minute=cal.get(Calendar.MINUTE_OF_HOUR);
setTitle(year+"-"+month+"-"+day+"-"+hour+":"+minute);
4.//使标题上的日期能随着选择的改变而改变
datePicker.init(year,month,day,new OnDateChangedListener()){
@Override
public void onDateChanged(DatePicker view,int year,int cal.get(Calendar.MONTH_OF_YEAR)，int dayOfMonth){
setTitle(year+"-"+(monthOfYear+1)+"-"+dayOfMonth);
}
}

时间选择器就比上次的日期选择器要简单很多了，首先不需要月份的换算，然后也不需要初始化，而是直接设置监听器。
timePicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() {
            @Override
            public void onTimeChanged(TimePicker timePicker, int hourOfDay, int minute) {
                setTitle(hourOfDay+":"+minute);
            }
        });

DatePickerDialog总结
1.实例化    public DatePickerDialog(Context context,  //上下文
            OnDateSetListener callBack,  //回掉函数
            int year,   //初始年月日
            int monthOfYear, 
            int dayOfMonth)
2.调用.show()方法显示

1     new DatePickerDialog(this, new OnDateSetListener() {
2         
3         @Override
4         public void onDateSet(DatePicker view, int year, int monthOfYear,
5                 int dayOfMonth) {
6             // TODO Auto-generated method stub
7             setTitle(year + "-" +  (monthOfYear+1)+"-"+dayOfMonth );
8         }
9     }, year, month, year).show();

TimePickerDialog总结
1.实例化     public TimePickerDialog(Context context, //上下文
            OnTimeSetListener callBack, //回掉函数
            int hourOfDay, int minute, //初始年月日，
            boolean is24HourView) //是否24小时制

1 new TimePickerDialog(this,new OnTimeSetListener() {
2         
3         @Override
4         public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
5             // TODO Auto-generated method stub
6             
7         }
8     }, hour, minute, true).show();

ps:

DatePicker对象是以init这个方法初始化来指定DatePicker初始化的年月日以及OnDateChangedListener来监听日期的改变，
而TimePicker不需要init初始化，只需要设置监听OnTimeChangedListener来监听时间的改变，
DatePickerDailog是以对话框的方式弹出日期选择器，需要用new的方式创建并且传入对应的监听OnDateSetListener，日期初始化数据，最后记得设置对话框显示(show)方法。
同样TimePickerDailog也是需要以new的方式进行初始化，并且设置OnTimeListene

需要注意的是DatePicker的初始化月份可能需要-1的操作（假如month=calendar.get(Calendar.MONTH) + 1，就需要减一），但直接在init()中使用calendar.get(Calendar.MONTH)表示月份就无需这样的操作


完整代码

 1 //3.0以上
 2 //TimePicker和DatePicker选择器的监听以及Dialog对话框
 3 public class MainActivity extends ActionBarActivity {
 4     private TimePicker timepicker;
 5     private DatePicker datepicker;
 6     private Calendar cal;
 7     private int year, month, day, hour, minute;
 8  
 9     @Override
10     protected void onCreate(Bundle savedInstanceState) {
11         super.onCreate(savedInstanceState);
12         setContentView(R.layout.fragment_main);
13         timepicker = (TimePicker) findViewById(R.id.timePicker1);
14         datepicker = (DatePicker) findViewById(R.id.datePicker1);
15         // 获取一个日历对象
16         cal = Calendar.getInstance();
17         //获取年月日时分秒的信息
18         year = cal.get(Calendar.YEAR);
19         month = cal.get(Calendar.MONTH);
20         day = cal.get(Calendar.DAY_OF_MONTH);
21         hour = cal.get(Calendar.HOUR_OF_DAY);
22         minute = cal.get(Calendar.MINUTE);
23         setTitle(year + "-" + (month + 1) + "-" + day + "-" + hour + ":" + minute);
24     //------------------监听----------------------------
25     //datepicker初始化
26     datepicker.init(year, month,day , new OnDateChangedListener() {
27         
28         @Override
29         public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
30             // TODO Auto-generated method stub
31             setTitle(year + "-" +  (monthOfYear+1)+"-"+dayOfMonth );
32         }
33     });
34     
35     timepicker.setOnTimeChangedListener(new OnTimeChangedListener() {
36         
37         @Override
38         public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {
39             // TODO Auto-generated method stub
40             setTitle(hourOfDay+":"+minute);
41         }
42     });
43     
44     
45     
46     
47     //-----------------对话框----------------------
48     new DatePickerDialog(this, new OnDateSetListener() {
49         
50         @Override
51         public void onDateSet(DatePicker view, int year, int monthOfYear,
52                 int dayOfMonth) {
53             // TODO Auto-generated method stub
54             setTitle(year + "-" +  (monthOfYear+1)+"-"+dayOfMonth );
55         }
56     }, year, month, day).show();
57     
58     new TimePickerDialog(this,new OnTimeSetListener() {
59         
60         @Override
61         public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
62             // TODO Auto-generated method stub
63             setTitle(hourOfDay+":"+minute);
64         }
65     }, hour, minute, true).show();
66     
67     }
68     
69 }