調用Java從科特林

Question

我有一個Java功能的可變參數方法：

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

我想從科特林稱之爲：

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

不過，這並不編譯，告訴我，有類型不匹配，Settings是必需的，但參數是kotlin.Array<out Settings>

我看到它試圖與signture

與之匹敵

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

，但我想用

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

Answer 1

應使用以下語法：

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

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