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Fix a NPE crash when onUpdateScrollbar() is called before adapter is initialized #6

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Fix a NPE crash when onUpdateScrollbar() is called before adapter is initialized #6

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3 changes: 3 additions & 0 deletions library/src/main/java/com/jaredrummler/fastscrollrecyclerview/FastScrollRecyclerView.java
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Original file line number Diff line number Diff line change
Expand Up @@ -340,6 +340,9 @@ public String scrollToPositionAtProgress(float touchFraction) {
* <p>Override in each subclass of this base class.</p>
*/
public void onUpdateScrollbar(int dy) {
if (getAdapter() == null) {
return;
}
int rowCount = getAdapter().getItemCount();
if (getLayoutManager() instanceof GridLayoutManager) {
int spanCount = ((GridLayoutManager) getLayoutManager()).getSpanCount();
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