From 316a8f433a50374e9577549e16af8f2d8211ae62 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E4=B9=90=E8=BE=89?= <CHENLEHUI799@pingan.com.cn>
Date: Tue, 18 Dec 2018 09:54:59 +0800
Subject: [PATCH] fix bug

---
 PullToRefresh/PullToRefresh.swift | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/PullToRefresh/PullToRefresh.swift b/PullToRefresh/PullToRefresh.swift
index be8791a..772ce05 100644
--- a/PullToRefresh/PullToRefresh.swift
+++ b/PullToRefresh/PullToRefresh.swift
@@ -188,7 +188,7 @@ extension PullToRefresh {
         } else {
             super.observeValue(forKeyPath: keyPath, of: object, change: change, context: context)
         }
-        previousScrollViewOffset.y = scrollView?.normalizedContentOffset.y ?? 0
+        previousScrollViewOffset.y = scrollView?.contentOffset.y ?? 0
     }
     
     fileprivate func addScrollViewObserving() {
@@ -328,7 +328,7 @@ private extension PullToRefresh {
     var isCurrentlyVisible: Bool {
         guard let scrollView = scrollView else { return false }
         
-        return scrollView.normalizedContentOffset.y <= -scrollViewDefaultInsets.top
+        return scrollView.normalizedContentOffset.y <= 0
     }
     
     func bringRefreshViewToSuperview() {