From 03e7d1fabd7568b611ea48eecb18332a7498a683 Mon Sep 17 00:00:00 2001
From: ricky <ricky@pinterest.com>
Date: Thu, 3 Jun 2021 11:19:45 -0700
Subject: [PATCH] [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.
---
 Source/ASCollectionView.mm | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Source/ASCollectionView.mm b/Source/ASCollectionView.mm
index 743f7660f..e08c55f98 100644
--- 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];
   }
 }