Call java varargs method from kotlin

Question

I have a java function:

public static void initialize(@NonNull Activity activity, Settings... settings) {} 

I want to call it from kotlin:

fun initialize(activity: Activity, vararg settings: settings) = JavaClass.initialize(activity, settings) 

But it does not compile, telling me that there is type mismatch, Settings is required, but the argument is kotlin.Array<out Settings>

I see that it's trying to match it with signture

public static void initialize(@NonNull Activity activity, Settings settings) {} 

but I want to use

public static void initialize(@NonNull Activity activity, Settings[] settings) {} 

Answer 1

You should use the following syntax:

fun initialize(activity: Activity, vararg settings: settings) =     JavaClass.initialize(activity, *settings) 

https://kotlinlang.org/docs/reference/java-interop.html#java-varargs