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java.time Kotlin extension functions library.
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seljabali/java-time-fun
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Java Time Kotlin extension functions.
- val dateTimeFormatter = DateTimeFormatter.ofPattern("yyyyMMdd")- val date = LocalDate.parse(dateText, dateTimeFormatter)+ val date = dateText.toLocalDate("yyyyMMdd")- val dateFormatter = DateTimeFormatter.ofPattern("MM/dd/yyyy")- print(dateFormatter.format(date))+ print(date.print("MM/dd/yyyy"))- if (ChronoUnit.YEARS.between(dateOfBirth, LocalDate.now()) < 18) {+ if (dateOfBirth.getYearDifference(LocalDates.today) < 18) {- val zoneId = ZoneId.of("America/Los_Angeles")+ val zoneId = ZoneIds.AMERICA_LOS_ANGELES
Convert strings into Java Time objects with ease
val result="01:30 AM".toLocalTime()val result="2021-06-07".toLocalDate()val result="06/07/2021".toLocalDate(format="MM/dd/yyyy")val result="2024-11-15T12:34:56.123456Z".toLocalDateTime()// handles fractional seconds that Java Time doesn'tval result="2021-10-04T10:10:00+0000".toZonedDateTime()
Create new date/time instances using factory functions
val result=LocalTimeFactory.new(hour=7, minute=30)val result=LocalDateFactory.new(year=2024, month=11, day=15)val result=LocalDateTimeFactory.new(year=2024, month=11, day=15)val result=ZonedDateTimeFactory.new(year=2024, month=11, day=15, zoneId=ZoneIds.AMERICA_LOS_ANGELES)
Easily convert legacy date objects to Java Time
val result=Date().toLocalDateTime()val result=GregorianCalendar().toZonedDateTime()
Compare dates and times at various granularities
// Yearval result= dateA.compareYear(dateB)val result= dateA.isBeforeYear(dateB)// Monthval result= dateA.compareMonth(dateB)val result= zonedDateA.getMonthDifference(zonedDateB)// auto-conversion to same time zone for expected resultsval result= dateA.isEqualMonth(dateB)// Dayval result= dateA.compareDay(dateB)val result= dateA.getDayDifference(dateB)val result= dateA.isAfterEqualDay(dateB)// Timeval result= dateA.compareTime(dateB)val result= dateA.getMinuteDifference(dateB)val result= dateA.isAfterEqualTime(dateB)
Print dates and times using a custom format
val date="2021-07-06".toZonedDateTime()val result= date.print(format="MM/dd/yyyy")
Query and transform date/time attributes
val result= date.isAtStartOfDay()val result= date.getDaysInMonth()val result= date.atStartOfDay()val result= date.getLast(DayOfWeek.FRIDAY)val result= date.getNext(DayOfWeek.MONDAY)
Quickly access commonly used dates
val result=LocalDates.startOfYear()val result=LocalDateTimes.tomorrow()val result=ZonedDateTimes.nextMonday()
Add the following to your module’sbuild.gradle:
repositories { mavenCentral()}dependencies { implementation("org.eljabali.sami.javatimefun:javatimefun:4.0.1")}
For Android
In addition to the above, you need to desugar your module:
- Ensure you're usingGradle Plugin 4.0.0+.
- Update module
build.gradle:
android { defaultConfig {// Required when setting minSdkVersion to 20 or lower multiDexEnabledtrue } compileOptions {// Flag to enable support for the new language APIs coreLibraryDesugaringEnabledtrue// Sets Java compatibility to Java 8 sourceCompatibilityJavaVersion.VERSION_1_8 targetCompatibilityJavaVersion.VERSION_1_8 }}dependencies { coreLibraryDesugaring'com.android.tools:desugar_jdk_libs:1.1.5'}
For more information on Android desugaring clickhere.
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