How to handle Item clicks for a recycler view using RxJava

Question

I was interested to find out what is the best way to respond to a item click of a recycler view.

Normally I would add a onclick() listener to the ViewHolder and pass ba

Answer 1

We generally need the Pojo/Model class from list on clicked index. I do it in following way:

1) Create a BaseRecyclerViewAdapter

abstract class BaseRecyclerViewAdapter : RecyclerView.Adapter() {
    private val clickListenerPublishSubject = PublishSubject.create()

    fun observeClickListener(): Observable {
        return clickListenerPublishSubject
    }

    fun performClick(t: T?) {
        t ?: return
        clickListenerPublishSubject.onNext(t)
    }
}

2) In any adapter (For example MyAdapter)

class MyAdapter(private val events: List, context: Context) : BaseRecyclerViewAdapter() {
    //... Other methods of RecyclerView
    override fun onBindViewHolder(holder: RecyclerView.ViewHolder?, position: Int) {
        if (holder is EventViewHolder) {
            holder.eventBinding?.eventVm = EventViewModel(events[position])

            holder.eventBinding?.root?.setOnClickListener({ _ ->
                // This notifies the subscribers
                performClick(events[position])
            })
        }
    }
}

3) Inside the Activity or Fragment where click listener is needed

myAdapter?.observeClickListener()
                ?.subscribe({ eventClicked ->
                    // do something with clicked item

                })