From 9b9d67e1a959eb9434b5b21ffa90df67057cd971 Mon Sep 17 00:00:00 2001
From: flappyFeline <ych.wang@outlook.com>
Date: Sat, 4 Feb 2017 11:28:27 +0800
Subject: [PATCH] fix crash when typing and deleting on
 TypingDemoViewController.(beyond array)

---
 Example/lottie-ios/AnimatedTextField.m | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Example/lottie-ios/AnimatedTextField.m b/Example/lottie-ios/AnimatedTextField.m
index 0aaf754703..4669399345 100644
--- a/Example/lottie-ios/AnimatedTextField.m
+++ b/Example/lottie-ios/AnimatedTextField.m
@@ -296,6 +296,9 @@
 - (CGSize)collectionView:(UICollectionView *)collectionView
                   layout:(UICollectionViewLayout*)collectionViewLayout
   sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
+  if (indexPath.row >= letterSizes_.count) {
+    return CGSizeZero;
+  }
   NSValue *value = letterSizes_[indexPath.row];
   return value.CGSizeValue;
 }