How do I get the current time as a TimeStamp in Kotlin?

Question

This is the timestamp format I need: 2018-03-22 19:02:12.337909

Answer 1

Kotlin doesn't have any time handling classes of its own, so you just use Java's java.time. For an ISO-8601 timestamp (which is the preferred format):

DateTimeFormatter.ISO_INSTANT.format(Instant.now())

That will return 2018-04-16T17:00:08.746Z. For your format, or if you need a different timezone, you can specify those:

DateTimeFormatter
    .ofPattern("yyyy-MM-dd HH:mm:ss.SSSSSS")
    .withZone(ZoneOffset.UTC)
    .format(Instant.now())

See the java.time.format.DateTimeFormatter JavaDoc for details on how to specify a format string.

The java.time classes are bundled with Android 26 and later, and with Java 8 and later. Most of the java.time functionality is back-ported to Java 6 & Java 7 in the ThreeTen-Backport project. Further adapted for earlier Android (<26) in ThreeTenABP. See How to use ThreeTenABP….

Update 2020/07

The development of ThreeTenABP is winding down. With Gradle plugin 4.0 and higher, you can directly use java 8 APIs without requiring a minimum API level for your app.

For more information see Java 8+ API desugaring support (Android Gradle Plugin 4.0.0+)

Answer 2

Try java.sql.Timestamp(System.currentTimeMillis()) i'm using API 19 and it works for me

Answer 3

  val currentTimestamp = System.currentTimeMillis()

Answer 4

package com.mkyong.date
import java.sql.Timestamp
import java.text.SimpleDateFormat
import java.util.Date
object TimeStampExample {
    private val sdf = SimpleDateFormat("yyyy.MM.dd.HH.mm.ss")
    @JvmStatic fun main(args:Array<String>) {
        //method 1
        val timestamp = Timestamp(System.currentTimeMillis())
        println(timestamp)
        //method 2 - via Date
        val date = Date()
        println(Timestamp(date.getTime()))
        //return number of milliseconds since January 1, 1970, 00:00:00 GMT
        println(timestamp.getTime())
        //format timestamp
        println(sdf.format(timestamp))
    }
}