[RTL] Guard access of flipsHorizontallyInOppositeLayoutDirection for …

…iOS >= 11 (#2003) `flipsHorizontallyInOppositeLayoutDirection` is available in iOS11 and greater. Texture still supports iOS9 so we need to make sure not to call this it in those cases.
TextureGroup · Jun 3, 2021 · 03e7d1f · 03e7d1f
1 parent 18d805f
commit 03e7d1f
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/Source/ASCollectionView.mm b/Source/ASCollectionView.mm
@@ -1859,8 +1859,11 @@ - (void)_beginBatchFetchingIfNeededWithContentOffset:(CGPoint)contentOffset velo
 {
   // Since we are accessing self.collectionViewLayout, we should make sure we are on main
   ASDisplayNodeAssertMainThread();
-
-  if (ASDisplayShouldFetchBatchForScrollView(self, self.scrollDirection, self.scrollableDirections, contentOffset, velocity, self.collectionViewLayout.flipsHorizontallyInOppositeLayoutDirection)) {
+  BOOL flipsHorizontallyInOppositeLayoutDirection = NO;
+  if (AS_AVAILABLE_IOS(11.0)) {
+    flipsHorizontallyInOppositeLayoutDirection = self.collectionViewLayout.flipsHorizontallyInOppositeLayoutDirection;
+  }
+  if (ASDisplayShouldFetchBatchForScrollView(self, self.scrollDirection, self.scrollableDirections, contentOffset, velocity, flipsHorizontallyInOppositeLayoutDirection)) {
     [self _beginBatchFetching];
   }
 }