Question

嗨，我有一个条件，我必须添加带有文本的其他viewType

show more或loading...

位于回收站视图的底部

我已经成功地添加了带show more的页脚视图，并且还在此页脚项目视图上添加了侦听器以加载更多数据，这里一切正常。由于我将刷新刷新布局作为recyclerview的父级，因此我在加载时显示启用swiperefresh进度，并在加载完成时禁用swiperefresh进度。现在，我需要的是每当我单击show more视图类型时，该视图类型是附加到回收者视图的页脚，我希望使用loading...更改文本，并且在完成加载后，应该更改文本再次show more。

这是我的适配器类

class MyTransactionAdapter(private val context: Context?,
                       private val transactionList: List<TransactionHistoryResponse>,
                       private val transactionListener: MyTransactionListener) : Filterable,
    RecyclerView.Adapter<RecyclerView.ViewHolder>() {

private var viewTypeList: Int = 0
private var viewTypeFooter: Int = 1


private var transactionListFiltered = transactionList

override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
    return if (viewType == viewTypeList) {
        val view: View = LayoutInflater.from(context).inflate(R.layout.row_my_transaction, parent, false)
        ListViewHolder(view)
    } else {
        val view: View = LayoutInflater.from(context).inflate(R.layout.row_footer_so_more, parent, false)
        FooterViewHolder(view)
    }
}

override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
    val myTransaction = transactionListFiltered[position]
    if (holder is ListViewHolder) {
        holder.bind(myTransaction, transactionListener)
    }
}

override fun getItemCount(): Int {
    return transactionListFiltered.size
}

override fun getItemViewType(position: Int): Int {
    return if (position == transactionList.lastIndex) {
        viewTypeFooter
    } else {
        viewTypeList
    }
}

inner class FooterViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
    init {
        itemView.apply {
            btnShowMore.setOnClickListener {
                transactionListener.onLoadMoreClicked()
            }
        }
    }

    fun enableShowMore(enable: Boolean) {
        if(enable){
            itemView.btnShowMore.text = "show more"

        }else{
            itemView.btnShowMore.text = "loading..."

        }
    }
}
inner class ListViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
    private lateinit var mTransactionStatus: TransactionStatus
    fun bind(myTransaction: TransactionHistoryResponse, transactionListener: MyTransactionListener){
        //logic to populate data on views
       }
    }
 }

这是片段的功能，我可以在其中进行加载

This function is being called for fetching data from remote

private fun getTransactionHistory() {
    swipeContainer.enableDisableSwipeRefresh(true)
    enableShowMore(false)
  //logic to load web data and hide show swiperefresh
  //when load is success call this function enableShowMore(true)
  //when load is failed call this function enableShowMore(false)
}

@Synchronized
private fun enableShowMore(enable: Boolean) {
    val viewHolder = recyclerView.findViewHolderForAdapterPosition(transactionList.size)
    if (viewHolder is MyTransactionAdapter.FooterViewHolder) {
        viewHolder.enableShowMore(enable)
    }
}

//这是单击页脚视图时的已实现方法重写fun onLoadMoreClicked（）{ fetchTransactionListFromServer（） } 我是否需要使用此方法做任何事情，因为用户可以一次单击多个页脚，而无需让应用加载远程数据。希望您能理解我的情况。预先感谢

这是我实现的屏幕截图

Answer 1

一旦用户单击，您可以尝试禁用页脚视图按钮吗？

fun enableShowMore(enable: Boolean) {
        if( enable ) {
            itemView.btnShowMore.text = "show more"
        } else {
            itemView.btnShowMore.text = "loading..."
        }
        itemView.btnShowMore.isEnabled = enable
    }

更新：

//In the adapter
mIsFooterEnabled = false

//In the View holder 
fun enableShowMore() {
  if( mIsFooterEnabled ) {
      itemView.btnShowMore.text = "show more"    
  } else {
      itemView.btnShowMore.text = "loading..."  
  }
  itemView.btnShowMore.isEnabled = mIsFooterEnabled
}

//In your activity / fragment
private fun enableShowMore(enable: Boolean) {
    adapter.mIsFooterEnabled = enable
    adapter.notifyDataSetChanged()
}

Answer 2

请尝试将功能代码放入 onBindViewHolder（）中的 enableShowMore（）内，还是将 holder.bind 设置为 FooterViewHolder ，并将代码放入活页夹函数中。

让我知道它是否有用。

更改recyclerview的页脚itemView的视图文本

2 个答案: