Inconsistency detected in RecyclerView, How to change contents of RecyclerView while scrolling

Question

I\'m using RecyclerView to display name of the items. My row contains single TextView. Item names are stored in List mItemList<

Answer 1

I had a similar issue but with deleting the contents. I also wanted to keep the animations too. I ended up using the notifyRemove, then passing the range. This seems to fix any issues...

public void deleteItem(int index) {
    try{
        mDataset.remove(index);
        notifyItemRemoved(index);
    } catch (IndexOutOfBoundsException e){
        notifyDataSetChanged();
        e.printStackTrace();
    }
}

Seems to be working and getting rid of the IOB Exception...

Answer 2

create CustomLinearLayoutManager:

public class CustomLinearLayoutManager extends LinearLayoutManager {

public CustomLinearLayoutManager(Context context) {
        super(context);
    }

    public CustomLinearLayoutManager(Context context, int orientation, boolean reverseLayout) {
        super(context, orientation, reverseLayout);
    }

    public CustomLinearLayoutManager(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
    }

    @Override
    public boolean supportsPredictiveItemAnimations() {
        return false;
    }

    public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) {
        try {
            super.onLayoutChildren(recycler, state);
        } catch (IndexOutOfBoundsException e) {
            e.printStackTrace();

        }
    }

    @Override
    public int scrollVerticallyBy(int dy, RecyclerView.Recycler recycler, RecyclerView.State state) {
        try {
            return super.scrollVerticallyBy(dy, recycler, state);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return 0;
    }
}

Answer 3

I also had the same issue and I have fixed it with not using notifyItemRangeChanged() method. It is nicely explained at

https://code.google.com/p/android/issues/detail?id=77846#c10

Answer 4

The problem is definitely not because of recyclerview scrolling, but it is related to notifyDataSetChanged(). I had a recycler view in which i was constantly changing data i.e. adding and removing data. I was calling notifyDataSetChanged() everytime I was adding items to my list, But was not refreshing the adapter whenever the item is being removed or the list was cleared.

So to fix the :

java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid item position 2(offset:2).state:12 at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5456)

I called adapter.notifyDataSetChanged() after list.clear(), wherever it was required.

if (!myList.isEmpty()) {
        myList.clear();
        myListAdapter.notifyDataSetChanged();
    }

Since then, I never encountered the exception. Hope it works out the same for others as well. :)

Answer 5

You must use in your getitem count

public int getItemCount() {

            if (mList!= null)
                return mList.size();
            else
                return 0;
        }

Also refreshing the recycler view please use this

if (recyclerView.getAdapter() == null) {

            recyclerView.setHasFixedSize(true);
            mFileListAdapter= new FileListAdapter(this);
            recyclerView.setAdapter(mFileListAdapter);
            recyclerView.setItemAnimator(new DefaultItemAnimator());
        } else {
            mFileListAdapter.notifyDataSetChanged();        

        }

By using this solution you are not able to solve the issue you simply use a condition inside the onBindViewHolder to resolve the java.lang.IndexOutOfBoundsException

 public void onBindViewHolder(FileHolder fileHolder, final int i) {
        if(i < mList.size)
        {
           String name = mList.get(i);       
           setSelected(fileHolder.itemView, mSelectedArray.get(i));
           fileHolder.mTextView.setText(name);
        }
    }

Answer 6

I have replicated this issue. This happened when we remove items in the background thread from mList but dont call notifyDataSetChanged(). Now If we scroll This exception is comming.

java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid item position 86(offset:86).state:100

Initially I had 100 items and removed few items from background thread.

Seems like Recyclerview calls getItemCount() itself to validate the state.