这是我的 KotlinRecyclerView 适配器类
class ListAdapter(var c: Context, var lists: ArrayList<Employee>,
itemClickListener: Any?): RecyclerView.Adapter<RecyclerView.ViewHolder>() {
override fun onCreateViewHolder(parent: ViewGroup?, viewType: Int): RecyclerView.ViewHolder {
var v = LayoutInflater.from(c).inflate(R.layout.list_layout, parent, false)
return Item(v)
}
override fun onBindViewHolder(holder: RecyclerView.ViewHolder?, position: Int) {
(holder as Item).bindData(lists.get(position))
}
override fun getItemCount(): Int {
return lists.size;
}
class Item(itemView: View) : RecyclerView.ViewHolder(itemView) {
fun bindData(_list: Employee)
{
itemView.textViewfirstname.text = _list.firstName
itemView.textViewlastname.text = _list.lastName
}
}
}
这是我的 Kotlin 事件代码
list.adapter = ListAdapter(this, getLists())
最佳答案
您可以传递类似的接口(interface)
list.adapter = ListAdapter(this, getLists(), object : ItemClickInterfaces {
override fun itemClick() {
TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
}
})
在适配器端你可以这样使用:
class ListAdapter(var context: Context, var lists: ArrayList<Employee>, var itemClickListener: ItemClickListener) : RecyclerView.Adapter<RecyclerView.ViewHolder>() {
override fun onCreateViewHolder(parent: ViewGroup?, viewType: Int): RecyclerView.ViewHolder {
var view = LayoutInflater.from(context).inflate(R.layout.list_layout, parent, false)
return Item(view)
}
override fun onBindViewHolder(holder: RecyclerView.ViewHolder?, position: Int) {
(holder as Item).bindData(lists[position])
if(somcondition){
itemClickListener.itemClick()
}
}
override fun getItemCount(): Int {
return lists.size;
}
internal class Item(itemView: View) : RecyclerView.ViewHolder(itemView) {
fun bindData(_list: Employee) {
itemView.textViewfirstname.text = _list.firstName
itemView.textViewlastname.text = _list.lastName
}
}
interface ItemClickListener {
fun itemClick()
}
}
关于kotlin - 如何在 Kotlin RecylerView 适配器中传递接口(interface)并在 Kotlin Activity 中获取回调,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/46703418/