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  • How to add Header to recyclerview in kotlin? 怎么样在recyclerview 里添加header Kotlin

    How to add Header to recyclerview in kotlin?

    class AllCategoryAdapter(val categoryList : List<AllCategoryBean>) : RecyclerView.Adapter<RecyclerView.ViewHolder>()
    {
        private val TYPE_HEADER : Int = 0
        private val TYPE_LIST : Int = 1
    
        override fun getItemViewType(position: Int): Int {
    
            if(position == 0)
            {
                return TYPE_HEADER
            }
            return TYPE_LIST
        }
    
        override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
            if(viewType == TYPE_HEADER)
            {
                val header = LayoutInflater.from(parent.context).inflate(R.layout.cv_all_category_header,parent,false)
                return ViewHolderHeader(header)
            }
    
            val header = LayoutInflater.from(parent.context).inflate(R.layout.cv_all_category,parent,false)
            return ViewHolder(header)
        }
    
        override fun getItemCount(): Int {
            return categoryList.size + 1
        }
    
        override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
            val listItem : AllCategoryBean = categoryList[position]
    
            if(holder is ViewHolderHeader)
            {
                holder.tvCategoyName.setText("All Category")
            }
    
            if(holder is ViewHolder)
            {
                holder.tvCategoyName.setText(listItem.getCategoryName())
            }
        }
    
        class ViewHolder(itemView : View) : RecyclerView.ViewHolder(itemView)
        {
            val tvCategoyName = itemView.findViewById(R.id.tvCategoyName) as TextView
        }
    
        class ViewHolderHeader(itemView : View) : RecyclerView.ViewHolder(itemView)
        {
            val tvCategoyName = itemView.findViewById(R.id.tvCategoyName) as TextView
        }
    
    }
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  • 原文地址:https://www.cnblogs.com/xixiaohui/p/12809599.html
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