RecyclerView 内部的 RecyclerView 显示错误数据

Question

我有一个适配器，其中包含另一个 recyclerview，当我将数据加载到该适配器时，我也为内部适配器加载数据，它已填充但未正确填充，当我滚动时它填充了项目（也错误地）但是当膨胀时不

class OrdersAdapter(private val context: Context) :
    RecyclerView.Adapter<BaseViewHolder<*>>() {

    private val innerAdapter by lazy { OrdersInnerAdapter(context) }

    ...

     inner class MainViewHolder(itemView: View) : BaseViewHolder<Order>(itemView) {
            override fun bind(item: Order, position: Int) {

                itemView.user_name.text = item.userName

                itemView.rv_order_items.layoutManager = LinearLayoutManager(context)
                itemView.rv_order_items.adapter = innerAdapter
                innerAdapter.setItems(item.cartList)

    }

现在这是我的内部适配器

class OrdersInnerAdapter(val context: Context):RecyclerView.Adapter<BaseViewHolder<*>>(){

    private var cartList = mutableListOf<Cart>()

 fun setItems(cartList:MutableList<Cart>){
        this.cartList = cartList
        notifyDataSetChanged()
    } 

 ....

  inner class OrdersInnerViewHolder(itemView: View):BaseViewHolder<Cart>(itemView){
        override fun bind(item: Cart, position: Int) {
            itemView.item_name.text = item.productName
            itemView.item_qty.text = "Quantity: ${item.qty}"
            itemView.item_price.text = "$${item.price.times(item.qty)}.00"
        }
    }

这是我的用例

但是内部适配器中的项目加载错误，知道吗？

Answer 1

class OrdersAdapter(private val context: Context) :
RecyclerView.Adapter<BaseViewHolder<*>>() {

 inner class MainViewHolder(itemView: View) : BaseViewHolder<Order>(itemView) {
        override fun bind(item: Order, position: Int) {

            itemView.user_name.text = item.userName

            itemView.rv_order_items.layoutManager = LinearLayoutManager(context)
            val innerAdapter = OrdersInnerAdapter(context)
            itemView.rv_order_items.adapter = innerAdapter
            innerAdapter.setItems(item.cartList)

}

而且 OrdersInnerAdapter 的 setItems 中不需要 notifyDataSetChanged()。它将是

fun setItems(cartList:MutableList<Cart>){
    this.cartList = cartList // You can also move this to constructor to get rid of extra method.
}

RecyclerView 内部的 RecyclerView 显示错误数据

RecyclerView inside RecyclerView displaying wrong data

android

android-adapter

kotlin

android-recyclerview