工具类

/**
 * Created by yaochenhao on 2020/06/28.
 */
import android.content.Context
import android.view.GestureDetector
import android.view.GestureDetector.SimpleOnGestureListener
import android.view.MotionEvent
import android.view.View
import androidx.recyclerview.widget.RecyclerView
import androidx.recyclerview.widget.RecyclerView.OnItemTouchListener


class RecyclerItemClickListener(
    context: Context?,
    recyclerView: RecyclerView,
    private val mListener: OnItemClickListener?
) :
    OnItemTouchListener {

    interface OnItemClickListener {
        fun onItemClick(view: View?, position: Int)
        fun onLongItemClick(view: View?, position: Int)
    }

    var mGestureDetector: GestureDetector
    override fun onInterceptTouchEvent(view: RecyclerView, e: MotionEvent): Boolean {
        val childView = view.findChildViewUnder(e.x, e.y)
        if (childView != null && mListener != null && mGestureDetector.onTouchEvent(e)) {
            mListener.onItemClick(childView, view.getChildAdapterPosition(childView))
            return true
        }
        return false
    }

    override fun onTouchEvent(view: RecyclerView, motionEvent: MotionEvent) {}
    override fun onRequestDisallowInterceptTouchEvent(disallowIntercept: Boolean) {}

    init {
        mGestureDetector = GestureDetector(context, object : SimpleOnGestureListener() {
            override fun onSingleTapUp(e: MotionEvent): Boolean {
                return true
            }

            override fun onLongPress(e: MotionEvent) {
                val child = recyclerView.findChildViewUnder(e.x, e.y)
                if (child != null && mListener != null) {
                    mListener.onLongItemClick(child, recyclerView.getChildAdapterPosition(child))
                }
            }
        })
    }
}

使用

recyclerView.addOnItemTouchListener(
    RecyclerItemClickListener(
        context,
        recyclerView,
        object : RecyclerItemClickListener.OnItemClickListener {
            override fun onItemClick(
                view: View?,
                position: Int
            ) {
                toast(position.toString())
            }

            override fun onLongItemClick(
                view: View?,
                position: Int
            ) {
            }
        })
)