Good afternoon I want to convert my simpledateformat to show "Tuesday, 1st April" for example from "15/09/21", I was wondering how do I convert it to this? I have attached an image of what it looks like before.

My code calling the date:

            addAll(pending.sortedByDescending { it.finishDate.convertToDate()?.time })
            addAll(accepted.sortedByDescending { it.finishDate.convertToDate()?.time })

Where the time gets called:

fun String.convertToDate(): Date? {
    val sdf = SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss")
    return try {
        sdf.parse(this)
    } catch (e: ParseException) {
        Timber.e("wrong date format - parsing not possible")
        null
    }
}

Date Example

CodePudding user response：

try this

fun changedate(olddate:String):String{
        var changedDate:String = ""
        try {
            val dateFormatprev = SimpleDateFormat("dd/MM/yyyy")
            val d: Date = dateFormatprev.parse(olddate)
            val dateFormat = SimpleDateFormat("EEE, MMM dd")
             changedDate = dateFormat.format(d)
            println(changedDate)
        } catch (e: ParseException) {
            e.printStackTrace()
        }
        return changedDate
    }

usage

 Log.e("TAG",changedate("01/01/2021"))

CodePudding user response：

SimpleDateFormat is long outdated and troublesome, as suggested by @Ole V update to DateTimeFormatter , Here's a sample code for same

        DateTimeFormatter formatter = null;
        String date  = "2021-09-16T11:36:15";
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
            formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss");
            LocalDateTime dateTime = LocalDateTime.parse(date, formatter);
            DateTimeFormatter formatter2 = DateTimeFormatter.ofPattern("EEEE, MMM d"); // use MMMM to show full month name
            Log.e("Date", ""   dateTime.format(formatter2) );
        }

To use this below android 8 , use desugaring

Output Thursday, Sep 16