解析android中系统日期时间的获取

import    java.text.SimpleDateFormat;     

SimpleDateFormat    formatter    =   new    SimpleDateFormat    ("yyyy年MM月dd日    HH:mm:ss     ");     
Date    curDate    =   new    Date(System.currentTimeMillis());//获取当前时间     
String    str    =    formatter.format(curDate);     

 可以获取当前的年月时分,也可以分开写:

SimpleDateFormat    sDateFormat    =   new    SimpleDateFormat("yyyy-MM-dd    hh:mm:ss");     
String    date    =    sDateFormat.format(new    java.util.Date());  

 当然还有就是可以指定时区的时间(待):

df=DateFormat.getDateTimeInstance(DateFormat.FULL,DateFormat.FULL,Locale.CHINA);
System.out.println(df.format(new Date()));

如何获取Android系统时间是24小时制还是12小时制

 ContentResolver cv = this.getContentResolver();
        String strTimeFormat = android.provider.Settings.System.getString(cv,
                                           android.provider.Settings.System.TIME_12_24);

        if(strTimeFormat.equals("24"))
       {
               Log.i("activity","24");
        }


Calendar c = Calendar.getInstance();
取得系统日期:year = c.get(Calendar.YEAR)
               month = c.grt(Calendar.MONTH)
               day = c.get(Calendar.DAY_OF_MONTH)
取得系统时间：hour = c.get(Calendar.HOUR_OF_DAY);
                  minute = c.get(Calendar.MINUTE)

 利用Calendar获取

Calendar c = Calendar.getInstance();
取得系统日期:year = c.get(Calendar.YEAR)
               month = c.grt(Calendar.MONTH)
               day = c.get(Calendar.DAY_OF_MONTH)
取得系统时间：hour = c.get(Calendar.HOUR_OF_DAY);
                  minute = c.get(Calendar.MINUTE)
                    Calendar c = Calendar.getInstance();
取得系统日期:year = c.get(Calendar.YEAR)
                   month = c.grt(Calendar.MONTH)
                   day = c.get(Calendar.DAY_OF_MONTH)
取得系统时间：hour = c.get(Calendar.HOUR_OF_DAY);
                     minute = c.get(Calendar.MINUTE)

 利用Time获取

Time t=new Time(); // or Time t=new Time("GMT+8"); 加上Time Zone资料。
t.setToNow(); // 取得系统时间。
int year = t.year;
int month = t.month;
int date = t.monthDay;
int hour = t.hour; // 0-23
int minute = t.minute;
int second = t.second;

 Android Calendar获取年月日时分秒毫秒

int month = (date.get(Calendar.MONTH))+1;
int day = date.get(Calendar.DAY_OF_MONTH);

Calendar CD = Calendar.getInstance();
int YY = CD.get(Calendar.YEAR) ;
int MM = CD.get(Calendar.MONTH)+1;
int DD = CD.get(Calendar.DATE);
int HH = CD.get(Calendar.HOUR);
int NN = CD.get(Calendar.MINUTE);
int SS = CD.get(Calendar.SECOND);
int MI = CD.get(Calendar.MILLISECOND);

Calendar cal = Calendar.getInstance();

        //当前年
        int year = cal.get(Calendar.YEAR);
        //当前月
        int month = (cal.get(Calendar.MONTH))+1;
        //当前月的第几天：即当前日
        int day_of_month = cal.get(Calendar.DAY_OF_MONTH);
        //当前时：HOUR_OF_DAY-24小时制；HOUR-12小时制
        int hour = cal.get(Calendar.HOUR_OF_DAY);
        //当前分
        int minute = cal.get(Calendar.MINUTE);
        //当前秒
        int second = cal.get(Calendar.SECOND);
        //0-上午；1-下午
        int ampm = cal.get(Calendar.AM_PM);
        //当前年的第几周
        int week_of_year = cal.get(Calendar.WEEK_OF_YEAR);
        //当前月的第几周
        int week_of_month = cal.get(Calendar.WEEK_OF_MONTH);
        //当前年的第几天
        int day_of_year = cal.get(Calendar.DAY_OF_YEAR);