From 2785a0bcd8f1b33c5378d8537ee349c758b04eec Mon Sep 17 00:00:00 2001
From: Adlai Holler <guy.on.internet@me.com>
Date: Sat, 4 Mar 2017 11:01:09 -0800
Subject: [PATCH] Pager should invalidate flow layout metrics on bounds change
 (#3133)

---
 Source/ASPagerFlowLayout.m | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Source/ASPagerFlowLayout.m b/Source/ASPagerFlowLayout.m
index 86892c9033..a1de537a4b 100644
--- a/Source/ASPagerFlowLayout.m
+++ b/Source/ASPagerFlowLayout.m
@@ -101,4 +101,12 @@
   return [super shouldInvalidateLayoutForBoundsChange:newBounds];
 }
 
+- (UICollectionViewLayoutInvalidationContext *)invalidationContextForBoundsChange:(CGRect)newBounds
+{
+  UICollectionViewFlowLayoutInvalidationContext *ctx = (UICollectionViewFlowLayoutInvalidationContext *)[super invalidationContextForBoundsChange:newBounds];
+  ctx.invalidateFlowLayoutDelegateMetrics = YES;
+  ctx.invalidateFlowLayoutAttributes = YES;
+  return ctx;
+}
+
 @end