RecyclerView decorator adding extra padding on refresh

Question

So, I\'m facing a weird problem while implementing RecyclerView in my project. I have a custom decorator to implement a consistent top and bottom padding and a rather different

Answer 1

You have to remove the item decoration before reseting new data.

rv.removeItemDecoration(yourDecorator)

Let me know if it works!

Answer 2

I had the same issue and I fixed that with the itemDecorationCount

if (recyclerView.itemDecorationCount == 0) {
            val itemDecorator = DividerItemDecoration(activity, DividerItemDecoration.VERTICAL)
            itemDecorator.setDrawable(ContextCompat.getDrawable(activity, R.drawable.recycler_divider))
            recyclerView.addItemDecoration(itemDecorator)
        }

Answer 3

You are adding Decoration each time recyclerview is loaded.

Use one flag instead :

private boolean flagDecoration = false;

if(!flagDecoration)
{
    rv.addItemDecoration(new RecyclerViewItemDecoration(30, item_count - 1));
    flagDecoration = true;    
}

Answer 4

Faced the same issue and resolved it by placing

mLayoutManager = new LinearLayoutManager(current_activity);
recyclerView.setLayoutManager(mLayoutManager);

in onPreExecute() method.

Just give it a try if it works

Answer 5

I face the same issue. Fix it with if check

    if (recyclerView.getItemDecorationAt(0) == null) { // check decoration here
        FlexboxItemDecoration agentDividerItemDecoration = new FlexboxItemDecoration(rv.getContext());
        agentDividerItemDecoration.setDrawable(recyclerView.getContext().getResources().getDrawable(R.drawable.shape_divider_flex_normal));
        recyclerView.addItemDecoration(agentDividerItemDecoration);
    } else {
        Log.i(TAG, "initTagsView: ItemDecoration not null");
    }

Answer 6

I was facing the same issue, the best solution is to make your item decoration while your are initializing your layout manager in the view holder , this resolves the problem you are facing example

public class GridViewHolder extends ViewHolder {

    RecyclerView grid_list;

    public GridViewHolder(View v) {
        super(v);
        this.grid_list = (RecyclerView) v.findViewById(R.id.home_screen_item_grid_recycler_view);
        if (grid_list.getLayoutManager() == null) {
            RecyclerView.LayoutManager mLayoutManager = new GridLayoutManager(context, 4);
            grid_list.setLayoutManager(mLayoutManager);
            grid_list.addItemDecoration(new GridSpacingItemDecoration(4, 3, false));
        }
    }
}