I am trying to remove Items from adapter when Item is clicked The display is doing the right thing but when I click the last item, I get IndexOutOfBound Exception
my diff utils the below
class ItemListDiffUtilCallBack(val oldList: List<Item?>,
val newList: List<Item?>) : DiffUtil.Callback() {
override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean
= oldList[oldItemPosition]?.Id == newList[newItemPosition]?.Id
override fun getOldListSize() = oldList.size
override fun getNewListSize() = newList.size
override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean
= oldList[oldItemPosition]?.isEnrolled == newList[newItemPosition]?.isEnrolled
override fun getChangePayload(oldItemPosition: Int, newItemPosition: Int): Any? {
return super.getChangePayload(oldItemPosition, newItemPosition)
}
}
this is how I'm updating the list where the newList have an Item removed from it.
The display is removing the Item with the default as intended
private fun updateList(newList: MutableList<Item?>) {
val oldList = itemList.toMutableList()
itemList.clear()
itemList.addAll(newList)
val result = DiffUtil.calculateDiff(ItemListDiffUtilCallBack(oldList, itemList))
result.dispatchUpdatesTo(this@ItemRecyclerViewAdapter)
}
when the onBindViewHolder get trigger after dispatchUpdatesTo
override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
if (holder is ItemViewHolder) {
val Item = itemList[position]
holder.setItem(Item)
val myButtonListener = View.OnClickListener {
itemList[position]?.Id?.let { Id ->
listener.onItemClick(Id)
}
}
holder.setButtonClickListener(myButtonListener )
}
}
val Item = itemList[position] itemList still have the size before the update.
And when I click the last Item to remove it,
itemList[position]?.Id?.let { itemList[position] the position return the last Item of the old list so I get the IndexOutOfBound Exception
What did I do wrong ?
