Convert long to date kotlin format(timestamp * 1000) I want to use currentTimeMillis twice so I can calculate a duration but I also want to display Time and Date in user readable format. For example: I have a val with date-time value like : val dateTime = "2020-12-13 17:54:00" Now I want to convert it to 10 digit timestamp like "1607842496" Please give me a simple sample to show how I I need to convert a value of type Long to Base64 encoding. toBinaryString(): Int. time package. There is a problem that long value in Java can not parsed to String( or Long) in Kotlin. text. We have looked into how to create date instances using LocalDate allows us to create a local instance of a date based on the year, month and day, without a timezone. Because it would always fail unless you pass Long parameter. Kotlin - how to parse a string that is either in a LocalDateTime new Date(1507457400000) // return Sun Oct 08 2017 12:10:00 GMT+0200 new Date(1507457400000). MILLISECONDS. Using this function, we can convert a Long value to an Int value: val longValue = 100L val intValue = longValue. The problem is that not all java types can be converted directly into a kotlin one especially not with the old DataType java. 2018 09:55" as String => Textview. 66% off Learn to code solving problems and writing code with our hands-on coding course. Follow How to convert format date from iso in kotlin. //string to date convert My server. text how can I do this with kotlin or java for android ? It’s longer, but avoiding hand-typing the format pattern string is worthwhile, and this also better lends itself to internationalization. 2 : I want it show " time ago " when load it from server. parse(strDate), LocalTime. var period = Period. We need two formatters, one to convert the string (in a given pattern) to date and another to convert the date back to string (in a different pattern). Parsing java long value to String in Kotlin. between(LocalDate, LocalDate) in order to calculate the difference between two LocalDates. So, let’s see it in action: In addition to converting Strings to Longs, it’s possible to perform conversions in the opposite direction. Modified 5 years, 8 months ago. public class CountryCode { private long code; public long getCode(){ return code; } } (Kotlin code) CountryUseCase. toHexString(long i) is unsigned, you will never see a negative sign prefix. util implementation, we simply need to instantiate a new object of the Date class. toEpochMilli() ; Ever better, just stop using System. – Viddyut Khanvilkar. parse(2024-12-21 06:50:00). hours this is That entire class is poorly designed and long outdated. To Convert you date in dd/MM/yyyy format into milliseconds you call this function with data as String just read stored timestamp and convert it to long. time / 1000, 0) its store wrong year, in debug is telling the correct year but stores year 3920 in timestamp instead 2020 or 1981 it happens with any kotlin. You might also encounter scenarios where you need to convert a date string back into a LocalDate or LocalDateTime object for processing. DISTANT_PAST and Instant. Commented Mar 10, How to Convert LocalDate to Long in Kotlin / Java. How to convert String to Long in Kotlin - In this article, we will see how to convert a String to Long in Kotlin using a library function. The Date class denotes a specific instant in time with millisecond precision. innerJoin (FoodMaster, {NutritionInTake. It return time : "2016-01-24T16:00:00. We also saw how to parse Strings with the java. Alternatively, the TimeUnit class can do that conversion for you as pointed out in the comments by @Arvind Kumar Avinash like the following: TimeUnit. So we’re going to begin by unpacking the nuances of LocalDate, from simple string-to-date conversions In this tutorial, we’ve seen how to convert String objects into Date types using the Date-Time API with Kotlin. I could not find a direct method that supports Epoch to OffsetDateTime conversion. foodId}, {foodDetails [FoodMaster. getInstance(Locale. timeInMillis = timestamp * 1000L val date = DateFormat. format("yyyy If I understood your question correctly, you want to read dates (as string) and output them to another format (as string). This method returns null if it tries to convert long to int, when it does not fit within int range. You can't just use as Long here. Viewed 23k times Part of Mobile Development Collective US phone service for long-term travel How *exactly* is divisibility defined? My input is unix seconds from epoch, which represents the date, that I need to work with, I need to convert the date to start time of a day and end time of a day of the same date, what are possible options to do so in Kotlin? kotlin; date; unix; timestamp; unix-timestamp; Share. time } Using However when I check the database the dates are still stored as strings in this format 2020/10/30 12:48:34. Then, a method called toIntOrNull is added to Long. Let's take a couple of examples to demonstrate how it's done. toInstant) is Samples. Long. Convert it to a Long. – The code below works well I am trying to figure how to calculate total number of days once the dates have been selected. getMinutes() // return 10 But I have no idea how to get the time using kotlin. One such conversion is turning a long value, typically representing a timestamp, into a LocalDateTime. Period. of(LocalDate. So you will have to get rid of Any type specification. Get time from LocalDateTime. I'm trying to convert a UTC string date to local time, so it's in a more readable format. toString(format: String, locale: Locale = Locale. kotlin; Share. getHours() // return 12 new Date(1507457400000). In this program, you'll learn to convert string to date in Kotlin using formatter. Note that the conversion is not always well-defined. my minimum SDK is 21 so the code below doesn't work In software development, there often comes a time when you're dealing with epoch or UNIX time – a measurement of time that represents the number of seconds that have elapsed since January 1, 1970 (excluding leap seconds). In order to do that, we can use the toString() function: assertEquals("42", 42. It offers the easiest way to convert a long value to a date as it provides an overloaded constructor that accepts a parameter of long type. ofEpochMilli. Use LocalDateTime, ZoneId, ZonedDateTime and DateTimeFormatter, all from java. Additionally, we can apply a format in the same way we used before with DateTimeFormatter:. Learn Android - Convert Date Format into Milliseconds. Please. No instant has this datetime value in the timeZone Returns a civil datetime value that this instant has in the specified timeZone. time. UTC; define a Kotlin for Android Monetization with Play ↗️ Extend by device; Build apps that give your users seamless experiences from phones to tablets, watches, headsets, and more. Convert any ISO-8601 format to a ↓Long. kt I have a long timestamp 1499070300 (equivalent to Mon, 03 Jul 2017 16:25:00 +0800) but when I convert it to LocalDateTime I get 1970-01-18T16:24:30. 300 Here's my code long test_timestamp = 1_499_07 The postgresql Timestamp with Time Zone data type needs to be supplied an OffsetDateTime when being called using a High level language like Kotlin. DISTANT_FUTURE. DateFormat df = new android. Converting instant and local datetime to and from the ISO 8601 string Instant , LocalDateTime , LocalDate and I get a string of type 01092020, how could I convert to date type in 01/09 format, just month and year? date; kotlin; Share. Fortunately they are all long outdated. import kotlinx. g. But it's not method of Any. Libraries. The problem I'm trying to solve: Select vacation start date - date selector - this part works well Select vacation end date - date selector - this part works well Total days =Calculate End date - Start date - I don't know how to To convert back, use the companion object function Instant. Any idea what is the best way to get the time from the data I have? #Convert String to Long value; #Convert String to Long type in Kotlin; #Conclusion; This tutorial covers various methods for converting strings to/from long values in Kotlin. Deprecated in Java And my code: val date:Date = val hour = date. The first one is just string like this: 2019-08-07 09:00:00 and like this: 1565209665. IntakeDate is a time stamp and OnDate is only date, because of the time, result is not showing properly, Its a web application. If we shift the individual bytes of the integer to the least-significant byte, the value will always be positive. g "2018-12-14T09:55:00" to "14. Utc). I use. 3: Gson gson = new GsonBuilder() . We can create a Period using Period‘s class factory method:. Kotlin convert TimeStamp to DateTime. java . ENGLISH). Ticks; DateTime dt = new DateTime(beginTicks + dateNumber * 10000, The problem here is that the Date constructor take long as the milliseconds count since 1/1/1970 and the number you are getting is the seconds count. convert(milliTime, TimeUnit. Builder() . format. In this article, we will see how we can generate the current local date and time in Kotlin. A string is a group of characters enclosed in double or single quotes. Improve this question. The Truncation Problem @Ken Wolf Is it possible to combine two separate Strings, one date String and one time String into one String (for example, "30/09/2014" and "10:00 PM" into "30/09/2014 10:00 PM" to get a long value from the combined String? The date String is format "dd/MM/yyyy" and the time String is format "h:mm a". 01. I need the correct format and current date for an api request. Hot Network Questions What was different, spending-wise, between the first version of the budget deal and the second one proposed by Trump? Will a 10-speed Tiagra shifter work with 9-speed sora drivetrain Best Practices for Managing Open-Source Vulnerabilities in Enterprise Deployments In this example, we're formatting the current date and time into a string that follows the pattern "dd-MM-yyyy HH:mm:ss", which includes date, hours, minutes, and seconds. parse(strTime)) val instant: Instant = ldt. How to separe "Start-Date" from that date? val tStamp: Timestamp = Timestamp(metaList. setDateFormat("yyyy-MM-dd'T'HH:mm:ss") . Some systems store The Code A can convert a long value to date value, just like 2018. 14-02-2018 Can someone help? If your long is actually the time in microseconds, you might want to divide it by 1000 before using it in Instant. getValue(String::class. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill LocalDateTime is modern alternative. An equivalent method if you don't have access to Integer. datetime. How to cast String into Int and Long? 2. How to split a Long into two Ints in Kotlin? 1. time, the modern Java date and time API. The range of supported years is platform-dependent, but at least is enough to represent dates of all instants between Instant. 288Z" android; date; time; iso; Share. First, make sure you import the necessary packages: Converting a string to a date is a common task in many applications, especially when dealing with user input or data from external sources. atZone(ZoneId. getInstance(). Exposed-kotlin-datetime. There are multiple ways to do it. fun Date. Kotlin extensions for Long and ByteArray types: fun Long. I've successfully converted Date format to Long using type converter but my current use case I neeed string to long. currentTimeMillis(). toInstant() You can combine the date and time strings to create a date-time string in ISO 8601 format which you can parse into LocalDateTime and then convert into Instant by using the applicable ZoneId. Date class in Kotlin, but LocalDate is the more modern API, so you should use it. Note that, whatever platform you're targeting, it doesn't really make sense to convert a millisecond epoch to a formatted date without defining the timezone. This process is crucial in applications that deal with date and time data, like logging systems, data analysis tools, or web applications with time-based features. Convert String Date to Date in Android (Java/Kotlin) without having to deal with Call requires API level 26. I am getting date value from database like "2013-02-27 06:06:30" using StringTokenizer I will get time separately like below String startTime = "2013-02-27 06:06:30"; StringTokenizer token = new notice that I put the time in setTimeInMillis as long and not as int, notice my date format has MM and not mm for Kotlin users: fun getDate(timestamp: Long) :String { val calendar = Calendar. setEndpoint(API_BASE_URL Returns an instant that corresponds to this civil datetime value in the specified timeZone. There is no pure Kotlin support for dates at the moment, only durations. What I meant is that your current functions create new formats each time they are called (because they call the SimpleDateFormat() constructor). On the JVM, there are LocalDateTime. I tried converting to a byte[] and then passing that to Base64. There can be the following possible situations: Only one instant has this datetime value in the timeZone. João Dias. How do I change it to just the name of the day or day I have one date and time format as below: Tue Apr 23 16:08:28 GMT+05:30 2013 I want to convert into milliseconds, but I actually dont know which format it is. toString() return date Learn how to convert timestamp to date in Python, PHP, JavaScript, Bash, Timestamp To Date Converter. Convert Date String to Date object in Kotlin? How to calculate number of days You have java. Kotlin - how to parse a string that is either in a LocalDateTime or LocalDate format into LocalDate. time Convert that Long back to a Date. MICROSECONDS) I am trying to convert Long value to Float in Kotlin. Example. Here is the snippet code: (Java code) CountryCode. And I am facing conversion problem, I am getting sunrise and sunset to Long (seconds) and I need to convert to HH: mm. LocalDateTime. You will have to take care of a multitude of possible formats. Epoch time is i am tring to convert string in format of dd/mm/Y to date but when i convert, no matter what date i choose, it returns day as 27, month and year are correctly returned. 64. When I run the application, I get invalid data, sunrise: 23:30 and sunset: 14:42. val dateTimeAsLong: Long = dateTime. A long is a numeric value that can represent a whole number. You can extract these format instances into variables and reuse them for each string in your list. Convert string to date in kotlin. Date fun convertLongToTime (time: Long): String { val date = Date(time) val format = SimpleDateFormat("dd/M/yyyy hh:mm:ss") return format. The classes you are already importing. how i convert this Timestamp(seconds=1556006384, nanoseconds=994000000) to Date in kotlin. java)!! val dateAsLong = dateAsString. id]} To format and parse dates, you'll make use of classes like LocalDate, LocalDateTime, and ZonedDateTime. However, there are limitations to this conversion. * import kotlin. 000Z" I want 1 : convert to String. The method is also optimized for powers of two, using shift operators instead of division, so performance might be I am having following code to convert milliseconds to Android Date object. val l: Long l. I looked through many of the exa long millisSinceEpoch = Instant. In Kotlin, the Long class has a useful helper function called toInt(). 0. Help me! I tried this and still having the year problem, not need full code, the year month and day are correct, i storing in my db and they are fine, i check in debug and they are fine, when i use val a = Timestamp(Date(year, month, day). One way would be to use generics, limited to some interface/class that has toLong() defined. DateFormat(); df. I have wirtten a base query get some data NutritionInTake . Can anybody please help me. – i Think the best thing you can do is to convert it to a string and than convert into a kotlinx. util package contains the Date class, which was used widely before the introduction of the java. toInt() is not safety. How to convert Long to Int in Kotlin? 28. toString(2) returns "-1" instead of a string of 1 bits). time, that means you can have the desired result with just a few lines of code. toString(radix: Int) is signed, which means it will return a string with a negative sign for negative values (or values over 2^63 - 1 if we think in terms of unsigned numbers). Long. How to convert TimeStamp to DateTime in Kotlinn - Kotlin is a statistically typed language and it is based on Java, hence all the Java code can easily be compiled within Kotlin code. fromEpochMilliseconds(Long). Instead use an appropriate class from java. You should toLong() function to convert. var strDate = "2021-11-25" var strTime = "15:20" val ldt = LocalDateTime. * fun main() { //sampleStart // Converting an instant to a local date-time in a How can I convert these values to Iso 8601 date format? I need like this format: "2022-03-20T16:58:00. I try to get hour from Date data type in Kotlin but get this error: 'getter for hours: Int' is deprecated. How can I convert a Long value to date time and convert current time to Long kotlin? Related. toString(2) works well for positive integers, but it does not print leading zeros, and preserves the sign ((-1). It is also posible with the new DataType java. . – Anonymous get the day of the week from Unix timestamp:-fun getDayOfWeek(timestamp: Long): String { return SimpleDateFormat("EEEE", Locale. is going to cause a lot of work. fun <T: Number> I'm working with a String of date such as: val date = "2021-01-24" how can I convert that string in order to get "Sunday" (user local english) or "Domingo" (user local My utils method for get current date time using Calendar when our minSdkVersion < 26. 3. toJavaLocalDateTime() and java. My code below returns the date 14 days later and incorrect time. Date. of(2018, 6, 25) var How to convert DateTime to Date in Kotlin. isn't there a way to shorten the big integer and make it fit into an Int if I can have the can find out the maximum length of the number generated from converting my String ID then dividing it by a given number can result in unique Integer, for example, 102050 and 201050 divided by 200 will result in 510 and 1005, which is much shorter, but this will reduce my . Periods represent a distance on the timeline. Will also have to figure out how to use this solution with the library now. of(1, 2, 3) This creates a Period of 1 year, 2 months and 3 days. format(this) } fun getCurrentDateTime(): Date { return Calendar. Here’s how you can do it: import This example demonstrates how to convert milliseconds to date format in Android using Kotlin. How to select the Start-Date(string) and to convert to timestamp in kotlin? I tried something for the first element but I have a string and it expected a long. As always, the complete code for this article is available To get the current date and time, you can use LocalDate when you need just the date, LocalTime for the time, or LocalDateTime for both. e. The input you are receiving may be a date plus time plus zone / offest (first example) or a date only (second example, even the locale matters here due to month names). If anyone could help specifically with string to long that would be great. Date API. To get the current date using the java. val dateAsString = incomeSnapshot. Java 7 The date String maybe like "2010-10-15T09:27:37Z" or "July 30, 2020" or any other format. I can convert it to 24 hour format successfully. * import kotlinx. 37. val formatter = I want convert string datetime to formatted string. Just use Instant in the first place. Why can't I convert a string "20L" to Long in Kotlin? 1. Thanks mate ! What is epoch time? The Unix epoch (or Unix time or POSIX time or Unix timestamp) is the number of seconds that have elapsed since January 1, 1970 (midnight UTC/GMT), not counting leap seconds (in ISO 8601: 1970-01-01T00:00:00Z). toInt() Here, we are converting a Long value to an Int value using the toInt function. Date dateObj = new Date(milli); But problem is that my milliseconds value is having GMT value added in it before i pass it to Date class, add when i print this date object i can see that date object is again adding GMT value in the milliseconds value and because of that my date is displayed as You can use the java. create(); RestAdapter restAdapter = new RestAdapter. toByteArray() = numberToByteArray(Long. toString()) It’s even possible to convert a decimal Long to its corresponding String in other numeric systems: The java. In this case, the conversion is unambiguous. Thank you so much. format(date) } This would work in Kotlin, you can change the format in SimpleDataFormat according to how you want. toLong() looks like your value is in milliseconds already (as Android operates with such precision) and convert to Date, then format it I have to convert particular Timestamp value to Time. But getting minor issue in displaying or converting it to 12 hour format. – yole. toInt() ←not safety! when out of int range Please add this function to arbitrary kt file instead. Note that while this conversion is unambiguous, the inverse (LocalDateTime. You only have to make sure the older date is the first argument, otherwise you will get a negative result. Literally speaking the epoch is Unix time 0 (midnight 1/1/1970), but 'epoch' is often used as a synonym for Unix time. I have a textView that in my activity layout: <TextView android:id="@+id/dateTv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" app:layout_constraintStart_toStartOf="parent" import java. In Java (or Kotlin) I need to convert date and time from yyyy-mm-dd and hh:mm:ss format to Fully adressing all the aspects of your post: You can utilize a java. elementAt(1)) list; kotlin; collections; Share. SimpleDateFormat import java. systemDefault()). As the name indicates, it comes with a host of methods that we can use to manipulate dates. SIZE_BYTES) { putLong(this@toByteArray) } private inline fun numberToByteArray(size: Int You can specify the DateTimeKind when you create a new DateTime object, so you could specify that as UTC and then use . android. 10 I hope to get Date + Time value , such as 2018. How to convert string to char in Kotlin? 5. encodeToString but I get the wrong answer. 12. To add this Period to an existing date, we use the LocalDate‘s plus() method:. Kotlin: Date time Change your datetime format to "dd/MM/yyyy hh:mm a" and provide a string date with additional AM/PM information, e. Here's a simple test run: (these are actually timestamps and will need to be converted back to the Date ). getDefault()): String { val formatter = SimpleDateFormat(format, locale) return formatter. How to convert my string date to this format Monday 08 2020 in Kotlin? How to convert Calendar to Date in Kotlin? Ask Question Asked 5 years, 8 months ago. because long to int is shrink. 1. Here’s how you can parse a date string: First: I found a lot of solutions but none of them is working for my issue. Like Number. Android XR Wear OS Android for Cars Android TV ChromeOS Assistant i'm working with firestore, and getting stuck when i get the timestamp from firestore. getTime()/1000; PHP: strtotime("2024-12-21 06:50:00"); Bash: date +"%s" -d "2024-12-21 06:50:00" Unix Time The SimpleDateFormat class is notoriously troublesome, and related classes like Date are poorly designed too. util. Example - using toLong()toLong() is a function that provides the most convenient way to convert a string to I want to convert a date string to unix timestamp from a date string e. child("incomeDate"). 1: 6190: September 19, 2021 JodaTime and Nullables. now(). The following steps should do: parse the input String to a LocalDateTime, which is specifically suitable for this step, because it stores only date and time of day, explicitly no offset or zone; append the desired ZoneOffset, here simply ZoneOffset. 17 Kotlin convert string to date and take one day before. Convert timestamp to date or date to timestamp easily ("YYYY-MM-dd HH:mm:ss") long ts = dateFormat. toKotlinLocalDateTime() extension functions to convert between Convert string to date in kotlin. You will have to rely on the target platform's facilities for date/time parsing and formatting. ENGLISH) calendar. Although, in fact, we have sunrise at 5:30, sunset at 20:42. In generally , all of my code is written in Kotlin. I have a date of string type "2020-08-10". my suggestion is the following code( you can change the formate): Platform specifics. How can I convert a Long value to date time and convert current time to Long How can I parse a Unix timestamp to a date string in Kotlin? For example 1532358895 to 2018-07-23T15:14:55Z. Finally, let’s look into working with Periods in Kotlin. Note that the modern Date-Time API is based on ISO 8601 and does not require using a DateTimeFormatter object explicitly as long as the Date-Time string conforms I'm trying to find out how I can convert DateTime to 10 digit timestamp in Kotlin (Android Studio), I can't find any equivalent of it in Kotlin. ToLocalTime to convert it to local time: long dateNumber = 1297380023295; long beginTicks = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind. format("dd-MM-yyyy",calendar). I'm getting date data from weather API in two versions. var date = LocalDate. In Kotlin, this can be achieved This post will discuss how to convert a string to a Date in Kotlin The recommended solution is to use DateTimeFormatter to create a formatter object and pass it to the In this example, you're only converting one string, but you mentioned you wanted to convert many. However I am seeing it is changing the value by a small fraction. As Kotlin is interoperable with Java, we will be using Java utility class an Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company How do I convert a long to a byte[] and back in Java? I'm trying convert a long to a byte[] so that I will be able to send the byte[] over a TCP connection. val backToDate: Date = Date(dateTimeAsLong) In this article, we have learned the basics of how to work with Dates in Kotlin. I'm having trouble as currentTimeMillis is good for the calculation but I can't see a built in function to convert to nice time or time/date. We then use the time zone identifier represented by ZoneId to obtain an Instant:. 10 23:11, how can I do with Kotlin? I hope to convert current time to a l In Java, handling dates and times is a common task, often requiring conversions between different types. val stringDate = "18/07/2019 04:20 PM" or just use the 24 hour format "dd/MM/yyyy HH:mm". test. Issue: I want to convert a string date in the format of yyyy-MM-dd to an actaul date, I can do it with the following method that I created but the problem is its only compatible with API Level 26 and above, and my minimum support Level is 19. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I am trying to get the current date and time in ISO 8601 format. Parsing Dates. We create an instance of LocalDateTime using the date and time strings. 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Convert long to date kotlin. Exposed-kotlin-datetime.