复选框总是检查recyclerview中的最后一项

Question

我想从我的recyclerview项目中的复选框中获取项目，这是我的适配器

class SelectedListDateAdapter(var listDate: List<DateDay>, private val onItemCheckListener: OnItemCheckListener) :
RecyclerView.Adapter<SelectedListDateAdapter.SelectedListDateViewHolder>() {
lateinit var  binding: ItemCheckBoxDateBinding
inner class SelectedListDateViewHolder(item: ItemCheckBoxDateBinding) : RecyclerView.ViewHolder(item.root) {
val checkBoxList = item.checkBox
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): SelectedListDateViewHolder {
binding = ItemCheckBoxDateBinding.inflate(
LayoutInflater.from(parent.context),
parent,
false
)
return SelectedListDateViewHolder(binding)
}
override fun onBindViewHolder(holder: SelectedListDateViewHolder, position: Int) {
holder.checkBoxList.setOnCheckedChangeListener(null)
holder.checkBoxList.isChecked = listDate[position].isSelected
holder.itemView.apply {
val currentItem = listDate[position]
binding.tvDateList.text = listDate[position].date
setOnClickListener {
binding.checkBox.isChecked = !binding.checkBox.isChecked
if (binding.checkBox.isChecked) {
binding.checkBox.setOnCheckedChangeListener { buttonView, isChecked ->
currentItem.isSelected = isChecked
}
onItemCheckListener.onItemCheck(currentItem)
} else {
binding.checkBox.setOnCheckedChangeListener { buttonView, isChecked ->
currentItem.isSelected = isChecked
}
onItemCheckListener.onItemUncheck(currentItem)
}
}
}
}
override fun getItemCount(): Int {
return listDate.size
}

}

我指的是这个问题，获取检查项目的列表，以使适配器

是的，它得到了项目并删除了它们，但每次我点击recyclerview中的项目时，它总是选中并取消选中最后一个项目

我已经在RecyclerView中检查了这个问题CheckBox继续检查不同的项目，但我的结果仍然相同，非常感谢任何帮助

Answer 1

也许viewHolder重用了前一项。尝试更新listData，而不是currentItem。并移动嵌套的Listener

override fun onBindViewHolder(holder: SelectedListDateViewHolder, position: Int) {
holder.itemView.tvDateList.text = listDate[position].date
holder.checkBoxList.isChecked = listDate[position].isChecked
holder.checkBoxList.setOnClickListener {
listDate[position].isSelected = holder.checkBoxList.isChecked
}
holder.itemView.setOnClickListener {
holder.checkBoxList.isChecked = !holder.checkBoxList.isChecked
listDate[position].isSelected = holder.checkBoxList.isChecked
val currentItem = listDate[position]
if (holder.checkBoxList.isChecked) {
onItemCheckListener.onItemCheck(currentItem)
} else {
onItemCheckListener.onItemUncheck(currentItem)
}
}
}