I am trying to use `WKScriptMessageHandlerProtocol` which has one abstract function defined, but whe...

# ios

[dazza5000]

I am trying to use WKScriptMessageHandlerProtocol which has one abstract function defined, but when building the project it wants me to implement all of the members for NSObject? Does anyone know how to fix that?

[Romain Dubreucq]

Subclass from NSObject? I don't know it is possible to subclass

[dazza5000]

this is how it is defined in kotlin mp

[dazza5000]

@kotlinx.cinterop.ExternalObjCClass public interface WKScriptMessageHandlerProtocol : platform.darwin.NSObjectProtocol {
    @kotlinx.cinterop.ObjCMethod public abstract fun userContentController(userContentController: platform.WebKit.WKUserContentController, didReceiveScriptMessage: platform.WebKit.WKScriptMessage): kotlin.Unit
}

[dazza5000]

message has been deleted

[dazza5000]

Looks like you can fix it by extending NSObject

[dazza5000]

val scriptMessageHandler: platform.WebKit.WKScriptMessageHandlerProtocol = object : platform.WebKit.WKScriptMessageHandlerProtocol, NSObject() {
    override fun userContentController(
        userContentController: WKUserContentController,
        didReceiveScriptMessage: WKScriptMessage
    ) {
        println("Received the following message ${didReceiveScriptMessage.body}")
    }
}

[Nikolay Kasyanov]

yep, and you’d have to do the same in Swift IIRC