How to reset recyclerView position item views to original state after refreshing adapter

Question

I have a RecyclerView with rows that have views that when clicked will be disabled for that row position.

The problem is after I update the adapter like this:

    adapterData.clear();
    adapterData.addAll(refreshedAdapterData);
    notifyDataSetChanged();

After refreshing the data, the disabled views at the previous recycler position still remain disabled even though the data is refreshed. How can I reset the views to the original state after refreshing adapter data.

how exactly are these views model related to the recycler view — Remario, Apr 06 '17 at 03:30

score 6 · Answer 1 · edited Mar 25 '20 at 08:30

6

Use below code.

  adapterData.clear();
adapterData.addAll(refreshedAdapterData);

adapter.notifyDataSetChanged();

OR

recyclerView.invalidate();

edited Mar 25 '20 at 08:30

valerybodak

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answered Apr 06 '17 at 03:42

Keyur Thumar

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1

Thanks, I got my solution by using adapterData.notifyDataSetChanged(); only – aanshu Aug 21 '18 at 10:27
1

@Kunal can you please post your solution here? – Hitesh Gupta Oct 06 '18 at 21:32

score 2 · Answer 2 · edited Mar 17 '18 at 12:44

2

When you call notifyDataSetChanged(), the onBindViewHolder() method of every view is called. So you could add something like this in the onBindViewHolder() of your Adapter method:

@Override   
public void onBindViewHolder(final RecyclerView.ViewHolder viewHolder, final int position) {
            if (refreshedAdapterData.get(position).isInDefaultState()) {
                //set Default View Values
            } else {
                //the code you already have
            }

        }

edited Mar 17 '18 at 12:44

CopsOnRoad

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answered Apr 06 '17 at 03:43

Christoph Mayr

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I have resolved the issue with reference to your comment. Thanks. – S bruce Apr 06 '17 at 05:18
@Sbruce If this was the answer which helped you the solve your problem it would be fair to mark it as answer too :) – Christoph Mayr Apr 07 '17 at 19:19

score 1 · Answer 3 · answered Apr 06 '17 at 05:17

I have resolved this by putting a conditional statement inside onBindViewHolder method instructing all positions to reset the disabled views if data meets the required conditions for a refreshed data.

@Christoph Mayr, thanks for your comments. It helped point me in the right direction.

score 0 · Answer 4 · answered Aug 25 '21 at 03:47

I cleared the data then notify change but the selected checkbox doesn't reset but just moves up one position. Let say I selected item #1 , move out of the RecyclerView, came back and it will auto select item #0.

So, I created new adapter again at onResume(), i worked for me but i don't know if it's the right way to handle this situation.

    @Override
    public void onResume() {
        super.onResume();
        if(selectedItems != null && selectedItems.size() > 0){
            selectedItems.clear(); // if no selected items before then no need to reset anything
            if(adapter != null && recyclerView != null){
                // to remove the checked box
                adapter = null;
                adapter = new MyAdapter(items, new MyAdapter.MyAdapterListener() {
                    @Override
                    public void onSelected(int pos) {
                        selectedItems.add(items.get(pos));
                    }

                    @Override
                    public void onUnSelected(int pos) {
                        selectedItems.remove(items.get(pos));
                    }
                });
                recyclerView.setAdapter(adapter);

            }

        }
    }

How to reset recyclerView position item views to original state after refreshing adapter

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