From 81b2ffe7df381deb0f9f860eff59b02ceb56a1f5 Mon Sep 17 00:00:00 2001
From: iwater <iwater@gmail.com>
Date: Tue, 25 Jul 2017 23:42:51 +0800
Subject: [PATCH] fix too many unused render with HeaderComponent

---
 Libraries/Lists/VirtualizedList.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Libraries/Lists/VirtualizedList.js b/Libraries/Lists/VirtualizedList.js
index 0638a6b208870a..bd2f8f386e2642 100644
--- a/Libraries/Lists/VirtualizedList.js
+++ b/Libraries/Lists/VirtualizedList.js
@@ -977,7 +977,7 @@ class VirtualizedList extends React.PureComponent<OptionalProps, Props, State> {
     const itemCount = this.props.getItemCount(this.props.data);
     let hiPri = false;
     if (first > 0 || last < itemCount - 1) {
-      const distTop = offset - this._getFrameMetricsApprox(first).offset;
+      const distTop = offset - (this._getFrameMetricsApprox(first).offset - this._getFrameMetricsApprox(0).offset);
       const distBottom =
         this._getFrameMetricsApprox(last).offset - (offset + visibleLength);
       const scrollingThreshold =