Trying to understand few things... Was trying to c...

# android

[wbertan]

Trying to understand few things... Was trying to create an extension:

fun View.setOnClickListenerWithThrottle(@Nullable listener: View.OnClickListener?) {
        // body
    }

Was planning to use like the Android `setOnClickListener`:

// This is the Android 'public void setOnClickListener(@Nullable OnClickListener l)'
        view.setOnClickListener {
            //onClick action
        }

But I'm getting this error:

/*
            Type mismatch.
            Required: View.OnClickListener?
            Found () -> Unit
        */
        view.setOnClickListenerWithThrottle {
            //onClick action
        }

Any idea or suggestion? Someone knows why or how I could achieve the desired behaviour?

[gildor]

Because there is no SAM coversion for Kotlin functions (at least now)

[gildor]

Use this instead:

fun View.setOnClickListenerWithThrottle(listener: ((View) -> Unit)?) {

    }

[gildor]

Related feature request
https://youtrack.jetbrains.com/issue/KT-11129

[wbertan]

Wow, nice! thank you! it works perfect! Already voted in the link 🙂

[ahulyk]

NewInference already works:
https://discuss.kotlinlang.org/t/new-type-inference-in-kotlin-1-3-0-rc-190/9914

[gildor]

Yes, experimental support already there, but I wouldn’t enable new inference only for this case

[gildor]

Also, this will be disabled by default in new type inference soon
https://youtrack.jetbrains.com/issue/KT-30661

[ahulyk]

@gildor thanks - good to know that!

[Jacques Smuts]

Ran into exactly the same issue when I Extended some RxJava functions. Glad to know this type inference will be easier in the future 🙂

[ahulyk]

@Jacques Smuts with RxJava you can use RxKoltin (it has same helpers for that) or enable new type inference