Kotlin中的静态扩展方法 [英] Static extension methods in Kotlin

问题描述

如何在Kotlin中定义静态扩展方法?这有可能吗?我目前有一种扩展方法，如下所示.

How do you define a static extension method in Kotlin? Is this even possible? I currently have an extension method as shown below.

public fun Uber.doMagic(context: Context) {
    // ...
}

以上扩展名可以在实例上调用.

The above extension can be invoked on an instance.

uberInstance.doMagic(context) // Instance method

但是如何使它成为如下所示的静态方法.

but how do I make it static method like shown below.

Uber.doMagic(context)         // Static or class method

推荐答案

要实现Uber.doMagic(context)，您可以编写

To achieve Uber.doMagic(context), you can write an extension to the companion object of Uber (the companion object declaration is required):

class Uber {
    companion object {}
}

fun Uber.Companion.doMagic(context: Context) { }

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