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Merge "Use the LayoutManager as the source of truth for visible positions" into sc-dev

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This commit is contained in:
Stevie Kideckel
2021-06-03 11:00:32 +00:00
committed by Android (Google) Code Review
parent c599c90eaa abd33b38e2
commit 5cc44eb73e
1 changed files with 19 additions and 2 deletions
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21
src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java
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@@ -154,8 +154,25 @@ public class WidgetsRecyclerView extends BaseRecyclerView implements OnItemTouch
return -1;
}
View child = getChildAt(0);
int rowIndex = getChildPosition(child);
int rowIndex = -1;
View child = null;
LayoutManager layoutManager = getLayoutManager();
if (layoutManager instanceof LinearLayoutManager) {
// Use the LayoutManager as the source of truth for visible positions. During
// animations, the view group child may not correspond to the visible views that appear
// at the top.
rowIndex = ((LinearLayoutManager) layoutManager).findFirstVisibleItemPosition();
child = layoutManager.findViewByPosition(rowIndex);
}
if (child == null) {
// If the layout manager returns null for any reason, which can happen before layout
// has occurred for the position, then look at the child of this view as a ViewGroup.
child = getChildAt(0);
rowIndex = getChildPosition(child);
}
for (int i = 0; i < getChildCount(); i++) {
View view = getChildAt(i);
if (view instanceof TableLayout) {