Implement double click function using RxBinding

Make sure you add the following dependencies:

implementation 'io.reactivex.rxjava2:rxandroid:2.1.1'
implementation 'io.reactivex.rxjava2:rxkotlin:2.4.0'
implementation 'com.jakewharton.rxbinding3:rxbinding:3.0.0'
implementation 'com.jakewharton.rxbinding3:rxbinding-core:3.0.0'

Add this extension function:

fun View.doubleClick(onComplete: () -> Unit): Disposable {
    val timeout = 400L
    val timeUnits = TimeUnit.MILLISECONDS
    val observable = this.clicks().share()
    return observable.buffer(observable.debounce(timeout, timeUnits))
            .subscribeOn(AndroidSchedulers.mainThread())
            .observeOn(AndroidSchedulers.mainThread())
            .subscribe {
                if (it.size == 2) onComplete.invoke()
            }
}

It counts the number of clicks in given time e.g. timeout and timeUnits when the size is equal to2 it invoke the onComplete function.