如何按本地字符串对字母敏感排序? [英] How to sort by local strings letter sensitive?

问题描述

假设我有类似

a, b, c, ą, ć, z, ż

我想按波兰语言环境进行排序，例如:

I want to be sorted with polish locale like:

a, ą, b, c, ć, z, ż

有可能实现吗?

更新:

假设我必须按两个对象参数并使用整理程序对列表进行排序. 对于一个属性，我可以使用:

Suppose I have to sort list by two object parameters and also using collator. For one property I can use:

val collator = Collator.getInstance(context.getResources().getConfiguration().locale)

myList.sortedWith(compareBy(collator,  { it.lastName.toLowerCase() }))

如何添加到此也按firstName排序? (例如，如果会有两个相同的lastName，然后按firstName对其进行排序)

How to add to this also to sort by firstName? (so for example if there will be two same lastName then sort them by firstName)

推荐答案

来自尝试这样的事情:

val list = arrayListOf("a", "b", "c", "ą", "ć", "z", "ż")
val coll = Collator.getInstance(Locale("pl","PL"))
coll.strength = Collator.PRIMARY
Collections.sort(list, coll)
println(list)

更新:

使您的对象实现可比性:

Make your object implement Comparable:

override fun compareTo(other: YourObject): Int {
    val coll = Collator.getInstance(Locale("pl","PL"))
    coll.strength = Collator.PRIMARY
    val lastNameCompareValue =  coll.compare(lastName?.toLowerCase(Locale("pl","PL")),other.lastName?.toLowerCase(Locale("pl","PL")))
    if (lastNameCompareValue != 0) {
        return lastNameCompareValue
    }
    val firstNameCompareValue =  coll.compare(firstName?.toLowerCase(Locale("pl","PL")),other.firstName?.toLowerCase(Locale("pl","PL")))
    return firstNameCompareValue
}

尝试一下.

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