IssueTracker

Hi,
We have passed this defect on to the development team and will update this issue with more information as it becomes available.
Thanks

Thought I should mention for posterity, a temporary workaround is:

    mStaggeredGridLayoutManager.setItemPrefetchEnabled(false);

[Comment deleted]

The bug is reproduced on physical device.

1. RecyclerView with GridLayoutManager (3 column)
2. All items has span = 3 (grid look like simple list)
3. Scrolling up and down is working fine
4. Insert items in the middle of the list (All inserted items has span 3 too)
5. call to notifyDataChanged()
6. Grid is expanded with animation
6. Scrolling up and down is failed.

Problem is found after adding android:animateLayoutChanges="true" into a parent layout.
Bug reproducing is stable.

Bug reproduced id add "android:animateLayoutChanges="true" to list item layout:

RecycleView
--Root Item view layout is: RelativeLayout
----LinearLayout
--------ViewPager
----------Page0: is <LinearLayout... "android:animateLayoutChanges="true".../> <-- this attr is the bug reason
 

You cannot use android:animateLayoutChanges with RecyclerView.
It will try to animate children of the RecyclerView and conflict with the ItemAnimator.

You can still use TransitionManager directly (which that attribute uses) but make sure to exclude RecyclerView's children.

Hi, original reporter here. I did not use animateLayoutChanges. See example project in original report.

sorry for the confusion, i've re-opened the ticket.

I face same problem , no solution till now ?

it is fixed internally, so in the next release it should be fine.

public class MyStaggerLayoutManager extends StaggeredGridLayoutManager {

    public MyStaggerLayoutManager(int spanCount, int orientation) {
        super(spanCount, orientation);
    }

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

    @Override
    public void collectAdjacentPrefetchPositions(int dx, int dy, RecyclerView.State state, LayoutPrefetchRegistry layoutPrefetchRegistry) {
        try {
            super.collectAdjacentPrefetchPositions(dx, dy, state, layoutPrefetchRegistry);
        } catch (IllegalArgumentException e) {
            LogUtils.e("catch IllegalArgumentException");
        }
    }
}

i fixed it by using custom LayoutManager