Convert UTC date string like "2022-07-07T08:17:12.117000" to your local Timezone in Kotlin-CodePudding

I have used the moment library to convert the date string in my local timezone in react but i have to implement the same in android but the problem is moment library is not available for java/kotlin. I have tried every possible solution on stactoverflow but the exception occur while parsing the date string. Format of the string is: 2022-07-07T08:17:12.117000 and want the output:

Jul-07-2022 01:47 pm

CodePudding user response：

In Kotlin, using the new Time library this is how i would do it.

Also don't forget to change the pattern strings to match your specific case. In your case the string pattern should be val dateTimePattern = "yyyy-MM-dd'T'HH:mm:ss.SSSSSS", but please check other approaches if it does not match.

fun formatDateTime(dateString: String): String {
    //change this to mach your speciffic string
    val dateTimePattern = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"

    val formatter = DateTimeFormatter.ofPattern(dateTimePattern).withZone(
        ZoneOffset.UTC
    )
    val timeFormatter = DateTimeFormatter.ofPattern("KK:mm a")
    val dateFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd")
    // \u00A0 is used to prevent the view from breaking line between "10:10" and "PM"
    val dateTime =
        ZonedDateTime.parse(dateString, formatter).withZoneSameInstant(ZoneId.systemDefault())
    val eventDateString = dateTime.format(dateFormatter)

    val formattedTime = dateTime.format(timeFormatter)
        .replace(" ", "\u00A0")

    return "$eventDateString $formattedTime"
}

CodePudding user response：

In JAVA

public String TimeConverter(String date) throws ParseException {
        String dateStr = date;
        try {
            @SuppressLint("SimpleDateFormat") SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
            formatter.setTimeZone(TimeZone.getTimeZone("UTC"));
            Date value = formatter.parse(dateStr);
            @SuppressLint("SimpleDateFormat") SimpleDateFormat dateformatter = new SimpleDateFormat("MMM-dd-yyyy hh:mm a");
            dateformatter.setTimeZone(TimeZone.getDefault());
            dateStr = dateformatter.format(value);
        } catch (Exception e) {
            dateStr = "00-00-0000 00:00";
        }
        return dateStr;
    }

In Kotlin

fun main() {
    var newdate = "2022-07-07T08:17:12.117000";
    try {

        val formatter = SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss")

        formatter.timeZone = TimeZone.getTimeZone("UTC")
        val value = formatter.parse(newdate.toString())
        val dateFormatter = SimpleDateFormat("MMM-dd-yyyy hh:mm a") //this format changeable
        dateFormatter.timeZone = TimeZone.getDefault()
        newdate = dateFormatter.format(value)
        //Log.d("ourDate", ourDate);
    } catch (e: Exception) {
        newdate = "00-00-0000 00:00"
    }
    println(newdate)
}

May this help! I have been keep digging for this that's why i want to share so that it can help someone like me. Just remember to change the simple date format pattern according to your date pattern.