CODEWITHSUNDEEP
androidkotlinandroid-recyclerview
S.P.
S.P.

Reputation: 2564

Handle setOnClickListener and setOnLongClickListener in Kotlin adapter

I'm trying to use setOnClickListener and setOnLongClickListener in adapter to pass the click to the activity. I've searched a lot of and I only found some examples of how to do one clicklistener but not handle both at the same time.

How can I handle both listeners in the activity?

ADAPTER

class BrowserAdapter(private val voucherList: List<String>?, private val listener: (String) -> Unit) : RecyclerView.Adapter<BrowserAdapter.MyViewHolder>() {

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
        return MyViewHolder(inflate(parent.context, R.layout.item_web, parent, false))
    }

    override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
        holder.bind(voucherList!![position], listener)
    }

    override fun getItemCount(): Int {
        return voucherList!!.size
    }

    class MyViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {

        fun bind(urlData: String, listener: (String) -> Unit) = with(itemView) {
            tx_url.text = urlData

            itemView.setOnClickListener{
                listener(urlData)
            }

            itemView.setOnLongClickListener{
                listener(urlData)
                true
            }
        }
    }
}

ACTIVITY

 rv_web_items.adapter = BrowserAdapter(Preferences.getFavouritesWebsites()) {
            presenter.onItemClick(it)
        }

Upvotes: 0

Views: 1040

Answers (2)

Santanu Sur
Santanu Sur

Reputation: 11477

The lambda function of the activity should look like :-

val listener : (String, Boolean) -> Unit = { urlData, isLongClick -> presenter.onItemClick(urlData) }

Then pass the lambda ( listener ) to the adapter

rv_web_items.adapter = BrowserAdapter(Preferences.getFavouritesWebsites(), listener)

Upvotes: 2

Andrew
Andrew

Reputation: 2157

I will suggest you to add listeners at onBindViewHolder like this:

holder.itemView.setOnClickListener {
        }

and also long click:

holder.itemView.setOnLongClickListener { true  }

and what about sending data to activity. First step - create interface:

interface Click {
    fun sendData(..., position: Int, ...) // it is only example
}

the the second step use it at your adapter:

open class Adapter(..., ..., private val click: Click)

then handle click and send data:

holder.itemView.setOnClickListener {
            click.sendData(your_data)
        }

then in activity you have to declare this interface:

 val adapter = Adapter(..., ..., this@YourActivity)

function for getting data in your activity:

override fun sendData(your_data) {
    }

and also don't forget to implement this interface:

class JobsList : ..., ..., Click

I hope it will help you. Good Luck :)

Upvotes: 1

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