你可以通过这个函数得到你的当地时间和GMT时间

public String getCurrentDate() {
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy MMM dd hh:mm a zzz");
    Date date = new Date();
    sdf.setTimeZone(TimeZone.getTimeZone("GMT+6:00"));
    return sdf.format(date);
}

Date todayDate = new Date();
todayDate.getDay();
todayDate.getHours();
todayDate.getMinutes();
todayDate.getMonth();
todayDate.getTime();

你可以通过以下方法获取日期:

Time t = new Time(Time.getCurrentTimezone());
t.setToNow();
String date = t.format("%Y/%m/%d");

这将给你一个漂亮的表单结果，如这个例子:"2014/02/09"。

试着用简单的方法获取当前的日期和时间:

SimpleDateFormat sdf = new SimpleDateFormat("yyyy.MM.dd G 'at' HH:mm:ss z");
String currentDateandTime = sdf.format(new Date());

SimpleDateFormat databaseDateTimeFormate = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
SimpleDateFormat databaseDateFormate = new SimpleDateFormat("yyyy-MM-dd");
SimpleDateFormat sdf1 = new SimpleDateFormat("dd.MM.yy");
SimpleDateFormat sdf2 = new SimpleDateFormat("yyyy.MM.dd G 'at' hh:mm:ss z");
SimpleDateFormat sdf3 = new SimpleDateFormat("EEE, MMM d, ''yy");
SimpleDateFormat sdf4 = new SimpleDateFormat("h:mm a");
SimpleDateFormat sdf5 = new SimpleDateFormat("h:mm");
SimpleDateFormat sdf6 = new SimpleDateFormat("H:mm:ss:SSS");
SimpleDateFormat sdf7 = new SimpleDateFormat("K:mm a,z");
SimpleDateFormat sdf8 = new SimpleDateFormat("yyyy.MMMMM.dd GGG hh:mm aaa");


String currentDateandTime = databaseDateTimeFormate.format(new Date());     //2009-06-30 08:29:36
String currentDateandTime = databaseDateFormate.format(new Date());     //2009-06-30
String currentDateandTime = sdf1.format(new Date());     //30.06.09
String currentDateandTime = sdf2.format(new Date());     //2009.06.30 AD at 08:29:36 PDT
String currentDateandTime = sdf3.format(new Date());     //Tue, Jun 30, '09
String currentDateandTime = sdf4.format(new Date());     //8:29 PM
String currentDateandTime = sdf5.format(new Date());     //8:29
String currentDateandTime = sdf6.format(new Date());     //8:28:36:249
String currentDateandTime = sdf7.format(new Date());     //8:29 AM,PDT
String currentDateandTime = sdf8.format(new Date());     //2009.June.30 AD 08:29 AM

日期格式

G   Era designator (before christ, after christ)
y   Year (e.g. 12 or 2012). Use either yy or yyyy.
M   Month in year. Number of M's determine length of format (e.g. MM, MMM or MMMMM)
d   Day in month. Number of d's determine length of format (e.g. d or dd)
h   Hour of day, 1-12 (AM / PM) (normally hh)
H   Hour of day, 0-23 (normally HH)
m   Minute in hour, 0-59 (normally mm)
s   Second in minute, 0-59 (normally ss)
S   Millisecond in second, 0-999 (normally SSS)
E   Day in week (e.g Monday, Tuesday etc.)
D   Day in year (1-366)
F   Day of week in month (e.g. 1st Thursday of December)
w   Week in year (1-53)
W   Week in month (0-5)
a   AM / PM marker
k   Hour in day (1-24, unlike HH's 0-23)
K   Hour in day, AM / PM (0-11)
z   Time Zone

一件容易的事。您可以剖析时间，以获得当前时间的单独值，如下所示:

Calendar cal = Calendar.getInstance();

int millisecond = cal.get(Calendar.MILLISECOND);
int second = cal.get(Calendar.SECOND);
int minute = cal.get(Calendar.MINUTE);

// 12-hour format
int hour = cal.get(Calendar.HOUR);

// 24-hour format
int hourofday = cal.get(Calendar.HOUR_OF_DAY);

日期也一样，如下所示:

Calendar cal = Calendar.getInstance();

int dayofyear = cal.get(Calendar.DAY_OF_YEAR);
int year = cal.get(Calendar.YEAR);
int dayofweek = cal.get(Calendar.DAY_OF_WEEK);
int dayofmonth = cal.get(Calendar.DAY_OF_MONTH);