events.kt

// Create Observable for button clicks 
val submitEvents: Observable<SubmitEvent> =
    submit_btn.clicks()
        .map { SubmitEvent(edit_text.text.toString()) }

// Create Observable for text typing
val checkNameEvents: Observable<CheckNameEvent> =
    edit_text.afterTextChangeEvents()
        .map { CheckNameEvent(it.editable?.toString()) }

// Merged events
val events: Observable<UIEvent> = Observable.merge(submitEvents, checkNameEvents)