android时间相关

<span style="white-space:pre">		</span>//获取当前时间
SimpleDateFormat formatter = new SimpleDateFormat ("yyyy/MM/dd/hh/mm/ss");
Date    curDate    =   new    Date(System.currentTimeMillis());
String    str    =    formatter.format(curDate);
System.out.println("小写h12小时制 "+str);

//获取当前时间
SimpleDateFormat formatter2 = new SimpleDateFormat ("yyyy/MM/dd/HH/mm/ss");
Date    curDate2    =   new    Date(System.currentTimeMillis());
String    str2    =    formatter2.format(curDate2);
System.out.println("大写H 24小时制"+str2);

<span style="white-space:pre">		</span>//获取昨天日期
Calendar   cal   =   Calendar.getInstance();
cal.add(Calendar.DATE,   -1);
String yesterday = new SimpleDateFormat( "yyyy/MM/dd ").format(cal.getTime());
System.out.println(yesterday);

<span style="white-space:pre">		</span>Date current=new Date();
time1 = current.getTime();
SimpleDateFormat sim=new SimpleDateFormat("yyyy/MM/dd/hh/mm/ss");
String str="2015/12/20/14/40/50";
try {
Date d=sim.parse(str);
time2 = d.getTime();
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
day = (time1 - time2) / (24 * 60 * 60 * 1000);
long shi = (time1 - time2) % (24 * 60 * 60 * 1000)/ (60 * 60 * 1000);
long fen = (time1 - time2) % (24 * 60 * 60 * 1000)% (60 * 60 * 1000)/(60 * 1000);
System.out.println(day+"天");
System.out.println(shi+"时");
System.out.println(fen+"分");

Calendar c = Calendar.getInstance();
int year = c.get(Calendar.YEAR);
int month = c.get(Calendar.MONTH);
int day = c.get(Calendar.DAY_OF_MONTH);
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
int second = c.get(Calendar.SECOND);
int a = c.get(Calendar.DAY_OF_YEAR);
System.out.println(a);
System.out.println(year+":"+(month+2)+":"+day+":"+hour+":"+minute+":"+second);