如何修复Kotlin中的过载分辨率歧义(无lambda)? [英] How to fix Overload Resolution Ambiguity in Kotlin (no lambda)?

问题描述

我在此行中有超载分辨率歧义"错误:

I am having Overload Resolution Ambiguity error in this line:

departureHourChoice!!.selectionModel.select(currentHourIndex)

供参考:

• departureHourChoice是ChoiceBox<Int>，来自java.scene.control

currentHourIndex是Int

.select()方法中发生了过载分辨率的歧义；它已重载，可以接受两种参数:(T obj)或(int index).

The Overload Resolution Ambiguity happens in the .select() method; It is overloaded and can accept two kinds of parameters: (T obj) or (int index).

.select()方法允许选择ChoiceBox中的一项，并且您可以通过引用该项或其索引来确定可以选择的项.在这种情况下，我希望通过索引(int)选择它.

The .select() method allows for an item in a ChoiceBox to be selected, and you can determine which one can be selected by referencing to that item or to it's index. In this case, I want it to be selected by Index (int).

这是错误的照片

如何解决超载分辨率的歧义?

How would one resolve the Overload Resolution Ambiguity?

推荐答案

似乎您被此错误可以解决:

• 将currentHourIndex框:

lateinit var departureHourChoice: ChoiceBox<Int>
...
val currentHourIndex = 1
departureHourChoice.selectionModel.select(currentHourIndex as Int?)

或将ChoiceBox的声明更改为使用java.lang.Integer而不是Kotlin的Int:

or change declaration of ChoiceBox to use java.lang.Integer instead of Kotlin's Int:

lateinit var departureHourChoice: ChoiceBox<java.lang.Integer>
...
val currentHourIndex = 1
departureHourChoice.selectionModel.select(currentHourIndex)

进一步阅读:

• 为什么是将Java方法的Integer参数映射到Int而不是平台类型?

• Why is Integer parameter of Java method mapped to Int and not platform type?
• Kotlin: What can I do when a Java library has an overload of both primitive and boxed type?

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