Added in API level 3
Deprecated in API level 22

Time

open class Time
kotlin.Any
   ↳ android.text.format.Time

An alternative to the java.util.Calendar and java.util.GregorianCalendar classes. An instance of the Time class represents a moment in time, specified with second precision. It is modelled after struct tm. This class is not thread-safe and does not consider leap seconds.

This class has a number of issues and it is recommended that java.util.GregorianCalendar is used instead.

Known issues:

  • For historical reasons when performing time calculations all arithmetic currently takes place using 32-bit integers. This limits the reliable time range representable from 1902 until 2037.See the wikipedia article on the Year 2038 problem for details. Do not rely on this behavior; it may change in the future.
  • Calling switchTimezone(java.lang.String) on a date that cannot exist, such as a wall time that was skipped due to a DST transition, will result in a date in 1969 (i.e. -1, or 1 second before 1st Jan 1970 UTC).
  • Much of the formatting / parsing assumes ASCII text and is therefore not suitable for use with non-ASCII scripts.
  • No support for pseudo-zones like "GMT-07:00".

Summary

Constants
static Int

The Julian day of the epoch, that is, January 1, 1970 on the Gregorian calendar.
static Int

static Int

static Int

static Int

static Int

The Julian day of the Monday in the week of the epoch, December 29, 1969 on the Gregorian calendar.
static Int

static Int

static Int

static Int

static Int

static Int

static String

static Int

static Int

static Int

static Int

static Int

static Int

Public constructors

Construct a Time object in the default timezone.
Time(other: Time!)

A copy constructor.
Time(timezoneId: String!)

Construct a Time object in the timezone named by the string argument "timezone".
Public methods
open Boolean
after(that: Time!)

Returns true if the time represented by this Time object occurs after the given time.
open Boolean
before(that: Time!)

Returns true if the time represented by this Time object occurs before the given time.
open Unit
clear(timezoneId: String!)

Clears all values, setting the timezone to the given timezone.
open static Int
compare(a: Time!, b: Time!)

Compare two Time objects and return a negative number if a is less than b, a positive number if a is greater than b, or 0 if they are equal.
open String!
format(format: String!)

Print the current value given the format string provided.
open String!

Format according to RFC 2445 DATE-TIME type.
open String!

Return a string in the RFC 3339 format.
open Int

Return the maximum possible value for the given field given the value of the other fields.
open static String!

Returns the timezone string that is currently set for the device.
open static Int
getJulianDay(millis: Long, gmtoffSeconds: Long)

Computes the Julian day number for a point in time in a particular timezone.
open static Int

Takes a number of weeks since the epoch and calculates the Julian day of the Monday for that week.
open Int

Computes the week number according to ISO 8601.
open static Int
getWeeksSinceEpochFromJulianDay(julianDay: Int, firstDayOfWeek: Int)

Returns the week since EPOCH_JULIAN_DAY (Jan 1, 1970) adjusted for first day of week.
open static Boolean
isEpoch(time: Time!)

Returns true if the instant of the supplied time would be for the Gregorian calendar date January 1, 1970 for a user observing UTC , i.
open Long
normalize(ignoreDst: Boolean)

Ensures the values in each field are in range.
open Boolean

Parses a date-time string in either the RFC 2445 format or an abbreviated format that does not include the "time" field.
open Boolean

Parse a time in RFC 3339 format.
open Unit
set(that: Time!)

Copy the value of that to this Time object.
open Unit
set(monthDay: Int, month: Int, year: Int)

Sets the date from the given fields.
open Unit
set(second: Int, minute: Int, hour: Int, monthDay: Int, month: Int, year: Int)

Sets the fields.
open Unit
set(millis: Long)

Sets the fields in this Time object given the UTC milliseconds.
open Long
setJulianDay(julianDay: Int)

Sets the time from the given Julian day number, which must be based on the same timezone that is set in this Time object.
open Unit

Sets the time of the given Time object to the current time.
open Unit
switchTimezone(timezone: String!)

Convert this time object so the time represented remains the same, but is instead located in a different timezone.
open Long
toMillis(ignoreDst: Boolean)

Converts this time to milliseconds.
open String

Return the current time in YYYYMMDDTHHMMSS<tz> format
Properties
Boolean

True if this is an allDay event.
Long

Offset in seconds from UTC including any DST offset.
Int

Hour of day [0-23]
Int

This time is in daylight savings time.
Int

Minute [0-59]
Int

Month [0-11]
Int

Day of month [1-31]
Int

Seconds [0-61] (2 leap seconds allowed)
String!

The timezone for this Time.
Int

Day of week [0-6]
Int

Year.
Int

Day of year [0-365]

Constants

EPOCH_JULIAN_DAY

Added in API level 3
static val EPOCH_JULIAN_DAY: Int

Deprecated: Deprecated in Java.

The Julian day of the epoch, that is, January 1, 1970 on the Gregorian calendar.

Value: 2440588

FRIDAY

Added in API level 3
static val FRIDAY: Int

Deprecated: Deprecated in Java. 

Value: 5

HOUR

Added in API level 3
static val HOUR: Int

Deprecated: Deprecated in Java. 

Value: 3

MINUTE

Added in API level 3
static val MINUTE: Int

Deprecated: Deprecated in Java. 

Value: 2

MONDAY

Added in API level 3
static val MONDAY: Int

Deprecated: Deprecated in Java. 

Value: 1

MONDAY_BEFORE_JULIAN_EPOCH

Added in API level 11
Deprecated in API level 22
static val MONDAY_BEFORE_JULIAN_EPOCH: Int

Deprecated: Deprecated in Java.

The Julian day of the Monday in the week of the epoch, December 29, 1969 on the Gregorian calendar.

Value: 2440585

MONTH

Added in API level 3
static val MONTH: Int

Deprecated: Deprecated in Java. 

Value: 5

MONTH_DAY

Added in API level 3
static val MONTH_DAY: Int

Deprecated: Deprecated in Java. 

Value: 4

SATURDAY

Added in API level 3
static val SATURDAY: Int

Deprecated: Deprecated in Java. 

Value: 6

SECOND

Added in API level 3
static val SECOND: Int

Deprecated: Deprecated in Java. 

Value: 1

SUNDAY

Added in API level 3
static val SUNDAY: Int

Deprecated: Deprecated in Java. 

Value: 0

THURSDAY

Added in API level 3
static val THURSDAY: Int

Deprecated: Deprecated in Java. 

Value: 4

TIMEZONE_UTC

Added in API level 3
static val TIMEZONE_UTC: String

Deprecated: Deprecated in Java. 

Value: "UTC"

TUESDAY

Added in API level 3
static val TUESDAY: Int

Deprecated: Deprecated in Java. 

Value: 2

WEDNESDAY

Added in API level 3
static val WEDNESDAY: Int

Deprecated: Deprecated in Java. 

Value: 3

WEEK_DAY

Added in API level 3
static val WEEK_DAY: Int

Deprecated: Deprecated in Java. 

Value: 7

WEEK_NUM

Added in API level 3
static val WEEK_NUM: Int

Deprecated: Deprecated in Java. 

Value: 9

YEAR

Added in API level 3
static val YEAR: Int

Deprecated: Deprecated in Java. 

Value: 6

YEAR_DAY

Added in API level 3
static val YEAR_DAY: Int

Deprecated: Deprecated in Java. 

Value: 8

Public constructors

Time

Added in API level 3
Time()

Construct a Time object in the default timezone. The time is initialized to Jan 1, 1970.

Time

Added in API level 3
Time(other: Time!)

A copy constructor. Construct a Time object by copying the given Time object. No normalization occurs.

Parameters
other Time!:

Time

Added in API level 3
Time(timezoneId: String!)

Construct a Time object in the timezone named by the string argument "timezone". The time is initialized to Jan 1, 1970.

Parameters
timezoneId String!: string containing the timezone to use.

Public methods

after

Added in API level 3
open fun after(that: Time!): Boolean

Deprecated: Deprecated in Java.

Returns true if the time represented by this Time object occurs after the given time.

Equivalent to Time.compare(this, that) > 0. See compare(android.text.format.Time,android.text.format.Time) for details.

Parameters
that Time!: a given Time object to compare against
Return
Boolean true if this time is greater than the given time

before

Added in API level 3
open fun before(that: Time!): Boolean

Deprecated: Deprecated in Java.

Returns true if the time represented by this Time object occurs before the given time.

Equivalent to Time.compare(this, that) < 0. See compare(android.text.format.Time,android.text.format.Time) for details.

Parameters
that Time!: a given Time object to compare against
Return
Boolean true if this time is less than the given time

clear

Added in API level 3
open fun clear(timezoneId: String!): Unit

Deprecated: Deprecated in Java.

Clears all values, setting the timezone to the given timezone. Sets isDst to a negative value to mean "unknown".

Parameters
timezoneId String!: the timezone to use.

compare

Added in API level 3
open static fun compare(
    a: Time!, 
    b: Time!
): Int

Deprecated: Deprecated in Java.

Compare two Time objects and return a negative number if a is less than b, a positive number if a is greater than b, or 0 if they are equal.

This method can return an incorrect answer when the date / time fields of either Time have been set to a local time that contradicts the available timezone information.

Parameters
a Time!: first Time instance to compare
b Time!: second Time instance to compare
Return
Int a negative result if a is earlier, a positive result if b is earlier, or 0 if they are equal.
Exceptions
java.lang.NullPointerException if either argument is null
java.lang.IllegalArgumentException if allDay is true but hour, minute, and second are not 0.

format

Added in API level 3
open fun format(format: String!): String!

Deprecated: Deprecated in Java.

Print the current value given the format string provided. See strftime(3) manual page for what means what. The final string must be less than 256 characters.

Parameters
format String!: a string containing the desired format.
Return
String! a String containing the current time expressed in the current locale.

format2445

Added in API level 3
open fun format2445(): String!

Deprecated: Deprecated in Java.

Format according to RFC 2445 DATE-TIME type.

The same as format("%Y%m%dT%H%M%S"), or format("%Y%m%dT%H%M%SZ") for a Time with a timezone set to "UTC".

format3339

Added in API level 3
open fun format3339(allDay: Boolean): String!

Deprecated: Deprecated in Java.

Return a string in the RFC 3339 format.

If allDay is true, expresses the time as Y-M-D

Otherwise, if the timezone is UTC, expresses the time as Y-M-D-T-H-M-S UTC

Otherwise the time is expressed the time as Y-M-D-T-H-M-S +- GMT

Return
String! string in the RFC 3339 format.

getActualMaximum

Added in API level 3
open fun getActualMaximum(field: Int): Int

Deprecated: Deprecated in Java.

Return the maximum possible value for the given field given the value of the other fields. Requires that it be normalized for MONTH_DAY and YEAR_DAY.

Parameters
field Int: one of the constants for HOUR, MINUTE, SECOND, etc.
Return
Int the maximum value for the field.

getCurrentTimezone

Added in API level 3
open static fun getCurrentTimezone(): String!

Deprecated: Deprecated in Java.

Returns the timezone string that is currently set for the device.

getJulianDay

Added in API level 3
open static fun getJulianDay(
    millis: Long, 
    gmtoffSeconds: Long
): Int

Deprecated: Use java.time.temporal.JulianFields#JULIAN_DAY instead.

Computes the Julian day number for a point in time in a particular timezone. The Julian day for a given calendar date is the same for every timezone. For example, the Julian day for July 1, 2008 is 2454649.

Callers must pass the time in UTC millisecond (as can be returned by toMillis(boolean) or normalize(boolean)) and the offset from UTC of the timezone in seconds at that time (as might be in gmtoff).

The Julian day is useful for testing if two events occur on the same calendar date and for determining the relative time of an event from the present ("yesterday", "3 days ago", etc.).

Parameters
millis Long: the time in UTC milliseconds
gmtoffSeconds Long: the offset from UTC in seconds
Return
Int the Julian day

getJulianMondayFromWeeksSinceEpoch

Added in API level 11
Deprecated in API level 22
open static fun getJulianMondayFromWeeksSinceEpoch(week: Int): Int

Deprecated: Deprecated in Java.

Takes a number of weeks since the epoch and calculates the Julian day of the Monday for that week. This assumes that the week containing the EPOCH_JULIAN_DAY is considered week 0. It returns the Julian day for the Monday week weeks after the Monday of the week containing the epoch.

Parameters
week Int: Number of weeks since the epoch
Return
Int The julian day for the Monday of the given week since the epoch

getWeekNumber

Added in API level 3
open fun getWeekNumber(): Int

Deprecated: Deprecated in Java.

Computes the week number according to ISO 8601. The current Time object must already be normalized because this method uses the yearDay and weekDay fields.

In IS0 8601, weeks start on Monday. The first week of the year (week 1) is defined by ISO 8601 as the first week with four or more of its days in the starting year. Or equivalently, the week containing January 4. Or equivalently, the week with the year's first Thursday in it.

The week number can be calculated by counting Thursdays. Week N contains the Nth Thursday of the year.

Return
Int the ISO week number.

getWeeksSinceEpochFromJulianDay

Added in API level 11
Deprecated in API level 22
open static fun getWeeksSinceEpochFromJulianDay(
    julianDay: Int, 
    firstDayOfWeek: Int
): Int

Deprecated: Deprecated in Java.

Returns the week since EPOCH_JULIAN_DAY (Jan 1, 1970) adjusted for first day of week. This takes a julian day and the week start day and calculates which week since EPOCH_JULIAN_DAY that day occurs in, starting at 0. *Do not* use this to compute the ISO week number for the year.

Parameters
julianDay Int: The julian day to calculate the week number for
firstDayOfWeek Int: Which week day is the first day of the week, see SUNDAY
Return
Int Weeks since the epoch

isEpoch

Added in API level 3
open static fun isEpoch(time: Time!): Boolean

Deprecated: Deprecated in Java.

Returns true if the instant of the supplied time would be for the Gregorian calendar date January 1, 1970 for a user observing UTC , i.e. the timezone of the time object is ignored.

See getJulianDay(long,long) for how to determine the Julian day for the timezone of the time object.

This method can return an incorrect answer when the date / time fields have been set to a local time that contradicts the available timezone information.

Parameters
time Time!: the time to test
Return
Boolean true if epoch.

normalize

Added in API level 3
open fun normalize(ignoreDst: Boolean): Long

Deprecated: Deprecated in Java.

Ensures the values in each field are in range. For example if the current value of this calendar is March 32, normalize() will convert it to April 1. It also fills in weekDay, yearDay, isDst and gmtoff.

If "ignoreDst" is true, then this method sets the "isDst" field to -1 (the "unknown" value) before normalizing. It then computes the time in milliseconds and sets the correct value for "isDst" if the fields resolve to a valid date / time.

See toMillis(boolean) for more information about when to use true or false for "ignoreDst" and when -1 might be returned.

Return
Long the UTC milliseconds since the epoch, or -1

parse

Added in API level 3
open fun parse(s: String!): Boolean

Deprecated: Deprecated in Java.

Parses a date-time string in either the RFC 2445 format or an abbreviated format that does not include the "time" field. For example, all of the following strings are valid:

  • "20081013T160000Z"
  • "20081013T160000"
  • "20081013"
Returns whether or not the time is in UTC (ends with Z). If the string ends with "Z" then the timezone is set to UTC. If the date-time string included only a date and no time field, then the allDay field of this Time class is set to true and the hour, minute, and second fields are set to zero; otherwise (a time field was included in the date-time string) allDay is set to false. The fields weekDay, yearDay, and gmtoff are always set to zero, and the field isDst is set to -1 (unknown). To set those fields, call normalize(boolean) after parsing. To parse a date-time string and convert it to UTC milliseconds, do something like this: 
Time time = new Time();
    String date = "20081013T160000Z";
    time.parse(date);
    long millis = time.normalize(false);

Parameters
s String!: the string to parse
Return
Boolean true if the resulting time value is in UTC time
Exceptions
android.util.TimeFormatException if s cannot be parsed.

parse3339

Added in API level 3
open fun parse3339(s: String!): Boolean

Deprecated: Deprecated in Java.

Parse a time in RFC 3339 format. This method also parses simple dates (that is, strings that contain no time or time offset). For example, all of the following strings are valid:

  • "2008-10-13T16:00:00.000Z"
  • "2008-10-13T16:00:00.000+07:00"
  • "2008-10-13T16:00:00.000-07:00"
  • "2008-10-13"

If the string contains a time and time offset, then the time offset will be used to convert the time value to UTC.

If the given string contains just a date (with no time field), then the allDay field is set to true and the hour, minute, and second fields are set to zero.

Returns true if the resulting time value is in UTC time.

Parameters
s String!: the string to parse
Return
Boolean true if the resulting time value is in UTC time
Exceptions
android.util.TimeFormatException if s cannot be parsed.

set

Added in API level 3
open fun set(that: Time!): Unit

Deprecated: Deprecated in Java.

Copy the value of that to this Time object. No normalization happens.

set

Added in API level 3
open fun set(
    monthDay: Int, 
    month: Int, 
    year: Int
): Unit

Deprecated: Deprecated in Java.

Sets the date from the given fields. Also sets allDay to true. Sets weekDay, yearDay and gmtoff to 0, and isDst to -1. Call normalize(boolean) if you need those.

Parameters
monthDay Int: the day of the month (in the range [1,31])
month Int: the zero-based month number (in the range [0,11])
year Int: the year

set

Added in API level 3
open fun set(
    second: Int, 
    minute: Int, 
    hour: Int, 
    monthDay: Int, 
    month: Int, 
    year: Int
): Unit

Deprecated: Deprecated in Java.

Sets the fields. Sets weekDay, yearDay and gmtoff to 0, and isDst to -1. Call normalize(boolean) if you need those.

set

Added in API level 3
open fun set(millis: Long): Unit

Deprecated: Deprecated in Java.

Sets the fields in this Time object given the UTC milliseconds. After this method returns, all the fields are normalized. This also sets the "isDst" field to the correct value.

Parameters
millis Long: the time in UTC milliseconds since the epoch.

setJulianDay

Added in API level 3
open fun setJulianDay(julianDay: Int): Long

Deprecated: Deprecated in Java.

Sets the time from the given Julian day number, which must be based on the same timezone that is set in this Time object. The "gmtoff" field need not be initialized because the given Julian day may have a different GMT offset than whatever is currently stored in this Time object anyway. After this method returns all the fields will be normalized and the time will be set to 12am at the beginning of the given Julian day.

The only exception to this is if 12am does not exist for that day because of daylight saving time. For example, Cairo, Eqypt moves time ahead one hour at 12am on April 25, 2008 and there are a few other places that also change daylight saving time at 12am. In those cases, the time will be set to 1am.

Parameters
julianDay Int: the Julian day in the timezone for this Time object
Return
Long the UTC milliseconds for the beginning of the Julian day

setToNow

Added in API level 3
open fun setToNow(): Unit

Deprecated: Deprecated in Java.

Sets the time of the given Time object to the current time.

switchTimezone

Added in API level 3
open fun switchTimezone(timezone: String!): Unit

Deprecated: Deprecated in Java.

Convert this time object so the time represented remains the same, but is instead located in a different timezone. This method automatically calls normalize() in some cases.

This method can return incorrect results if the date / time cannot be normalized.

toMillis

Added in API level 3
open fun toMillis(ignoreDst: Boolean): Long

Deprecated: Deprecated in Java.

Converts this time to milliseconds. Suitable for interacting with the standard java libraries. The time is in UTC milliseconds since the epoch. This does an implicit normalization to compute the milliseconds but does not change any of the fields in this Time object. If you want to normalize the fields in this Time object and also get the milliseconds then use normalize(boolean).

If "ignoreDst" is false, then this method uses the current setting of the "isDst" field and will adjust the returned time if the "isDst" field is wrong for the given time. See the sample code below for an example of this.

If "ignoreDst" is true, then this method ignores the current setting of the "isDst" field in this Time object and will instead figure out the correct value of "isDst" (as best it can) from the fields in this Time object. The only case where this method cannot figure out the correct value of the "isDst" field is when the time is inherently ambiguous because it falls in the hour that is repeated when switching from Daylight-Saving Time to Standard Time.

Here is an example where toMillis(true) adjusts the time, assuming that DST changes at 2am on Sunday, Nov 4, 2007. 

Time time = new Time();
  time.set(4, 10, 2007);  // set the date to Nov 4, 2007, 12am
  time.normalize(false);       // this sets isDst = 1
  time.monthDay += 1;     // changes the date to Nov 5, 2007, 12am
  millis = time.toMillis(false);   // millis is Nov 4, 2007, 11pm
  millis = time.toMillis(true);    // millis is Nov 5, 2007, 12am

To avoid this problem, use toMillis(true) after adding or subtracting days or explicitly setting the "monthDay" field. On the other hand, if you are adding or subtracting hours or minutes, then you should use toMillis(false).

You should also use toMillis(false) if you want to read back the same milliseconds that you set with set(long) or set(android.text.format.Time) or after parsing a date string.

This method can return -1 when the date / time fields have been set to a local time that conflicts with available timezone information. For example, when daylight savings transitions cause an hour to be skipped: times within that hour will return -1 if isDst = -1.

toString

Added in API level 3
open fun toString(): String

Deprecated: Deprecated in Java.

Return the current time in YYYYMMDDTHHMMSS<tz> format

Return
String a string representation of the object.

Properties

allDay

Added in API level 3
var allDay: Boolean

Deprecated: Deprecated in Java.

True if this is an allDay event. The hour, minute, second fields are all zero, and the date is displayed the same in all time zones.

gmtoff

Added in API level 3
var gmtoff: Long

Deprecated: Deprecated in Java.

Offset in seconds from UTC including any DST offset.

hour

Added in API level 3
var hour: Int

Deprecated: Deprecated in Java.

Hour of day [0-23]

isDst

Added in API level 3
var isDst: Int

Deprecated: Deprecated in Java.

This time is in daylight savings time. One of:

  • positive - in dst
  • 0 - not in dst
  • negative - unknown

minute

Added in API level 3
var minute: Int

Deprecated: Deprecated in Java.

Minute [0-59]

month

Added in API level 3
var month: Int

Deprecated: Deprecated in Java.

Month [0-11]

monthDay

Added in API level 3
var monthDay: Int

Deprecated: Deprecated in Java.

Day of month [1-31]

second

Added in API level 3
var second: Int

Deprecated: Deprecated in Java.

Seconds [0-61] (2 leap seconds allowed)

timezone

Added in API level 3
var timezone: String!

Deprecated: Deprecated in Java.

The timezone for this Time. Should not be null.

weekDay

Added in API level 3
var weekDay: Int

Deprecated: Deprecated in Java.

Day of week [0-6]

year

Added in API level 3
var year: Int

Deprecated: Deprecated in Java.

Year. For example, 1970.

yearDay

Added in API level 3
var yearDay: Int

Deprecated: Deprecated in Java.

Day of year [0-365]