如何在Android应用程序中获取当前时间和日期?
当前回答
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
其他回答
你可以使用以下代码:
Calendar c = Calendar.getInstance();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String strDate = sdf.format(c.getTime());
输出:
2014-11-11 00:47:55
您还可以从这里获得SimpleDateFormat的更多格式化选项。
下面是一些获取时间和日期的方法:
public static void getCurrentTimeUsingDate() {
Date date = new Date();
String strDateFormat = "hh:mm:ss a";
DateFormat dateFormat = new SimpleDateFormat(strDateFormat);
String formattedDate= dateFormat.format(date);
Toast.makeText(this, formattedDate, Toast.LENGTH_SHORT).show();
}
使用日历的时间
public static void getCurrentTimeUsingCalendar() {
Calendar cal = Calendar.getInstance();
Date date=cal.getTime();
DateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");
String formattedDate=dateFormat.format(date);
Toast.makeText(this, formattedDate, Toast.LENGTH_SHORT).show();
}
当地时间日期
public static void getCurrentTime(){
System.out.println("-----Current time of your time zone-----");
LocalTime time = LocalTime.now();
Toast.makeText(this, time, Toast.LENGTH_SHORT).show();
}
分区时间
public static void getCurrentTimeWithTimeZone(){
Toast.makeText(this, "Current time of a different time zone using LocalTime", Toast.LENGTH_SHORT).show();
ZoneId zoneId = ZoneId.of("America/Los_Angeles");
LocalTime localTime=LocalTime.now(zoneId);
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("HH:mm:ss");
String formattedTime=localTime.format(formatter);
Toast.makeText(this,formattedTime , Toast.LENGTH_SHORT).show();
}
获取当前时间和日期的简单方法
import java.util.Calendar
Date currentTime = Calendar.getInstance().getTime();
Use:
Time time = new Time();
time.setToNow();
System.out.println("time: " + time.hour + ":" + time.minute);
例如,这将为您提供“12:32”。
记得导入android.text.format.Time;。
//currentTimeMillis is System.currentTimeMillis()
long totalSeconds = currentTimeMillis / 1000;
int currentSecond = (int)totalSeconds % 60;
long totalMinutes = totalSeconds / 60;
int currentMinute = (int)totalMinutes % 60;
long totalHours = totalMinutes / 60;
int currentHour = (int)totalHours % 12;
TextView tvTime = findViewById(R.id.tvTime);
tvTime.setText((currentHour + OR - TIME YOU ARE FROM GMT) + ":" + currentMinute + ":" + currentSecond);
你可以使用下面的代码获取当前的日期和时间:
val current_data_time= SimpleDateFormat("MMMMddyyyyHHmm", Locale.getDefault())
val currentDateandTime: String = current_data_time.format(Date())
如果你用MMMM:那么月份名称就会显示出来。“3”
如果你用MM:那么数字显示。“3”
Dd表示日,yyyy表示年
如果你只想要最后两位数字,那么yy。
如果你先改变月份和年份,然后需要左右改变MMMM、dd和yyyy,例如:12/3/2021 12:12 dd/MM/ yyyy HH: MM
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