onBindViewHolder中的Recyclerview覆盖问题，未覆盖

Question

在BindViewHolder中添加ViewHolder类时，覆盖函数不会覆盖。当我把viewHolder类放在它外面时，它不起作用。

下面是我的代码-

class data_custom_adapter(private val context: Context, private val datalist : ArrayList<Display_data>) : RecyclerView.Adapter<CustomAdapter.ViewHolder>() {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): CustomAdapter.ViewHolder {
val v = LayoutInflater.from(parent.context).inflate(R.layout.display_data_card, parent, false)
return CustomAdapter.ViewHolder(v)
}

//Issue occur here -- it is not overriding when I add ViewHolder class
override fun onBindViewHolder(holder: data_custom_adapter.ViewHolder, position: Int) {
holder.bindItems(context,datalist[position])
}
override fun getItemCount(): Int {
return datalist.size
}
//the class is holding the list view
class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {

private val datalist_data = itemView.findViewById(R.id.displayxmldata) as TextView

fun bindItems(context: Context, datashow : Display_data) {
datalist_data.text = datashow.appdata
}
}
}

伙计们，请帮忙找出这个问题。

Answer 1

ViewHolder必须与您在第一行中指示的类匹配。所以在中

class data_custom_adapter(private val context: Context, private val datalist : ArrayList<Display_data>) : RecyclerView.Adapter<CustomAdapter.ViewHolder>() {

存在CCD_ 1。将其更改为您的data_custom_adapter.ViewHolder，它应该可以工作。就像

class data_custom_adapter(private val context: Context, private val datalist : ArrayList<Display_data>) : RecyclerView.Adapter<data_custom_adapter.ViewHolder>() {

这也需要在onCreateViewHolder功能中进行更改

Answer 2

我希望这能奏效。

class data_custom_adapter(
private val context: Context,
private val datalist : ArrayList<Display_data>) : RecyclerView.Adapter<data_custom_adapter.ViewHolder>() {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
val v = LayoutInflater.from(parent.context).inflate(R.layout.display_data_card, parent, false)
return data_custom_adapter.ViewHolder(v)
}
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
holder.bindItems(context,datalist[position])
}
override fun getItemCount(): Int {
return datalist.size
}
//the class is holding the list view
class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {

private val datalist_data = itemView.findViewById(R.id.displayxmldata) as TextView

fun bindItems(context: Context, datashow : Display_data) {
datalist_data.text = datashow.appdata
}
}
}