CODEWITHSUNDEEP
androidandroid-recyclerviewandroid-viewholder
Maurice
Maurice

Reputation: 2259

RecyclerView findViewHolderForLayoutPosition and findViewHolderForAdapterPosition returns null

I am just trying to get my view holder seen on screen, but the methods findViewHolderFor* is given null object almost all the time.

My Code from my Adapter: 

fun getVisibleViewHolder(recyclerView: RecyclerView) {
    for (i in 0 until recyclerView.childCount) {
        val viewHolder = recyclerView.findViewHolderForLayoutPosition(i) // null: most of the time (specially when scroll performed)
        val viewHolder = recyclerView.findViewHolderForAdapterPosition(i) // idem
    }
}

Sometimes it's working, but it's rare.

Upvotes: 0

Views: 3151

Answers (1)

Maurice
Maurice

Reputation: 2259

So I found the solution! And the explanation. recyclerView.childCount = Number of element in parent which is obviously different from the position! 

    for (i in 0 until recyclerView.childCount) {
        val view = recyclerView.getChildAt(i)
        val viewHolder = recyclerView.findContainingViewHolder(view)
        ... // the purpose, getting the data from the user here
    }

Upvotes: 1

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