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[英]How to add a click listener to ItemDecoration in RecyclerView Android?
[英]android kotlin -how to add click listener to RecyclerView adapter
我是 kotlin 的新手,這是我的適配器代碼,它可以找到並且我沒有問題,現在,我需要為它實現點擊偵聽器,這是我的代碼:
class CategoryAdapter(val context: Context,val list: List<CategoryItems>): RecyclerView.Adapter<CategoryAdapter.ViewHolder>() {
var typeface: Typeface? = Func.getTypeFace(context)
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
var catRow=list.get(position)
holder?.tvTitle.text = catRow.name
holder?.tvTitle.setTypeface(typeface)
Glide.with(context).load(Const.BaseUrl+"Opitures/"+ catRow.icon_name).into(holder?.imgCat);
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
val v = LayoutInflater.from(parent?.context).inflate(R.layout.category_item, parent, false)
return ViewHolder(v);
}
override fun getItemCount(): Int {
return list.size
}
class ViewHolder(itemView: View): RecyclerView.ViewHolder(itemView){
val tvTitle = itemView.findViewById<TextView>(R.id.tv_cat_title)
val imgCat = itemView.findViewById<ImageView>(R.id.img_cat)
}
}
我想添加點擊偵聽器,我曾經在實現點擊偵聽器的 viewholder 類中這樣做
我怎樣才能在 kotlin 中做到這一點? 我綁了很多方法但沒有成功
var onItemClick: ((pos: Int, view: View) -> Unit)? = null
inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView), View.OnClickListener {
override fun onClick(v: View) {
onItemClick?.invoke(adapterPosition, v)
}
val tvTitle = itemView.findViewById<TextView>(R.id.tv_cat_title)
init {
itemView.setOnClickListener(this)
}
}
並在您的活動中實現點擊偵聽器
adapter.onItemClick = { pos, view ->
}
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