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);

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;。

你也可以使用android.os.SystemClock。 例如，SystemClock.elapsedRealtime()将在手机处于睡眠状态时为您提供更准确的时间读数。

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();

如果需要当前日期:

Calendar cc = Calendar.getInstance();
int year = cc.get(Calendar.YEAR);
int month = cc.get(Calendar.MONTH);
int mDay = cc.get(Calendar.DAY_OF_MONTH);
System.out.println("Date", year + ":" + month + ":" + mDay);

如果需要当前时间:

 int mHour = cc.get(Calendar.HOUR_OF_DAY);
 int mMinute = cc.get(Calendar.MINUTE);
 System.out.println("time_format" + String.format("%02d:%02d", mHour , mMinute));

    SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
    Calendar cal = Calendar.getInstance();
    System.out.println("time => " + dateFormat.format(cal.getTime()));

    String time_str = dateFormat.format(cal.getTime());

    String[] s = time_str.split(" ");

    for (int i = 0; i < s.length; i++) {
         System.out.println("date  => " + s[i]);
    }

    int year_sys = Integer.parseInt(s[0].split("/")[0]);
    int month_sys = Integer.parseInt(s[0].split("/")[1]);
    int day_sys = Integer.parseInt(s[0].split("/")[2]);

    int hour_sys = Integer.parseInt(s[1].split(":")[0]);
    int min_sys = Integer.parseInt(s[1].split(":")[1]);

    System.out.println("year_sys  => " + year_sys);
    System.out.println("month_sys  => " + month_sys);
    System.out.println("day_sys  => " + day_sys);

    System.out.println("hour_sys  => " + hour_sys);
    System.out.println("min_sys  => " + min_sys);