android– 如何在kotlin中的customadpter项目上实现clicklistener？

概述我想在recyclerview项目上实现onClickListener.这是我的CustomAdapter.kt代码.packagecom.png.kotlinsample/***Createdbyadminon13-08-2017.*/importandroid.support.v7.widget.RecyclerViewimportandroid.view.LayoutInflaterimportandroid.view.Viewimport

我想在recyclervIEw项目上实现onClickListener.这是我的CustomAdapter.kt代码.

package com.png.kotlinsample/** * Created by admin on 13-08-2017. */import androID.support.v7.Widget.RecyclerVIEwimport androID.vIEw.LayoutInflaterimport androID.vIEw.VIEwimport androID.vIEw.VIEwGroupimport androID.Widget.TextVIEw/** * Created by prashant on 6/19/2017. */class CustomAdapter(val userList: ArrayList<User>, val Listener: (User) -> Unit) : RecyclerVIEw.Adapter<CustomAdapter.VIEwHolder>() {    //this method is returning the vIEw for each item in the List        class MyAdapter(val userList: ArrayList<User>)    overrIDe fun onCreateVIEwHolder(parent: VIEwGroup, vIEwType: Int): CustomAdapter.VIEwHolder {        val v = LayoutInflater.from(parent.context).inflate(R.layout.row_layout, parent, false)        return VIEwHolder(v)    }    //this method is binding the data on the List    overrIDe fun onBindVIEwHolder(holder: CustomAdapter.VIEwHolder, position: Int) {        holder.bindItems(userList[position],Listener)    }    //this method is giving the size of the List    overrIDe fun getItemCount(): Int {        return userList.size    }    //the class is hodling the List vIEw    class VIEwHolder(itemVIEw: VIEw) : RecyclerVIEw.VIEwHolder(itemVIEw) {        fun bindItems(user: User, Listener: (User) -> Unit) = with(itemVIEw) {            val textVIEwname = itemVIEw.findVIEwByID(R.ID.textVIEwUsername) as TextVIEw            val textVIEwAddress  = itemVIEw.findVIEwByID(R.ID.textVIEwAddress) as TextVIEw            textVIEwname.text = user.name            textVIEwAddress.text = user.address            setonClickListener { Listener(user) }        }    }}

我想从我的活动中点击监听器回调.

解决方法:

class CustomAdapter(    val userList: List<User>,     val Listener: (User) -> Unit) : RecyclerVIEw.Adapter<CustomAdapter.VIEwHolder>() {    overrIDe fun onCreateVIEwHolder(parent: VIEwGroup, vIEwType: Int): CustomAdapter.VIEwHolder = VIEwHolder(LayoutInflater.from(parent.context).inflate(R.layout.row_layout, parent, false))    overrIDe fun onBindVIEwHolder(holder: CustomAdapter.VIEwHolder, position: Int) {        holder.bindItems(userList[position])    }    overrIDe fun getItemCount(): Int = userList.size    inner class VIEwHolder(itemVIEw: VIEw) : RecyclerVIEw.VIEwHolder(itemVIEw) {            private val textVIEwname: TextVIEw = itemVIEw.findVIEwByID(R.ID.textVIEwUsername)            private val textVIEwAddress: TextVIEw  = itemVIEw.findVIEwByID(R.ID.textVIEwAddress)        fun bindItems(user: User) = with(itemVIEw) {            textVIEwname.text = user.name            textVIEwAddress.text = user.address            setonClickListener { Listener(user) }        }    }}

然后

val adapter = CustomAdapter(userList) { user ->    // do something with user on click}recyclerVIEw.adapter = adapter

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