CODEWITHSUNDEEP
androidandroid-recyclerview
J DEO
J DEO

Reputation: 51

How can i move to next object in recyclerview on button click

I want to move to next object in recyclerview when button is clicked. I tried using scrollToPosition but i can't figure out how can i get current position of the object. If i put a number in there then it works, but then it only jumps to that position only.

Code i am using to scroll 

layoutManager.scrollToPosition(2);

Upvotes: 4

Views: 5875

Answers (2)

jantursky
jantursky

Reputation: 1130

LinearLayoutManager - methods like findLastCompletelyVisibleItemPosition() and checking the size of your AdapterItems and scrolling to the next (+1 if findLast < adapter.itemsSize). Very simple logic.

LinearLayoutManager layoutManager = new LinearLayoutManager(getContext());
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(adapter);

Logic for button clicking:

btnClick.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        if (layoutManager.findLastCompletelyVisibleItemPosition() < (adapter.getItemCount() - 1)) {
            layoutManager.scrollToPosition(layoutManager.findLastCompletelyVisibleItemPosition() + 1);
        }

    }
});

And in your extended Adapter for RecyclerView, you should have something like this:

@Override
public int getItemCount() {
    return yourData != null ? yourData.length() : 0;
}

Upvotes: 14

andrei
andrei

Reputation: 2940

The ViewHolder has a getAdapterPosition function returning its position

Upvotes: 0

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