Passing locale to sort strings alphabetically

Question

I have a list of strings that I would like to sort alphabetically, depending on the user's locale. To do this I use Collator:

val collator = Collator.getInstance()
return collator.compare(stringOne, stringTwo)

By default, Locale.getDefault() is passed to the collator, but I would like to use sorting by locale, which we will receive from the user, with the transfer of language and country. For example:

val col2 = Collator.getInstance(Locale("en", "US"))

or

val col2 = Collator.getInstance(Locale("en", "EN"))

Answer 1

As far as I understand your problem, you just need a way to pass the locale to your Collator.You'll need a Locale instance to get the job done. Something like:

import java.text.Collator
import java.util.*

fun main() {
    val list = ArrayList<String>()
    list.add("árbol")
    list.add("único")
    list.add("cosas")
    list.add("fútbol")

    val spanishLocale = Locale("es", "ES")
    val collator = Collator.getInstance(spanishLocale)

    // Sort the list using the Collator instance
    Collections.sort(list, collator)

    println(list)
}

CODE DEMO

You can read more around this in this blog post.