From eac617d6ee74fb20cd69fdbc78a77ee07f5e6ba3 Mon Sep 17 00:00:00 2001
From: Janic Duplessis <janicduplessis@gmail.com>
Date: Tue, 12 Apr 2016 01:26:11 -0700
Subject: [PATCH] Add null check before accessing the refresh control ref

Summary:Unmounting the RefreshControl during onRefresh callback causes the native ref to become null, this simply adds a null check to prevent the crash.
Closes https://github.com/facebook/react-native/pull/6931

Differential Revision: D3167637

fb-gh-sync-id: c2420b7a3b672d62dd349a6d35bb05399a00620c
fbshipit-source-id: c2420b7a3b672d62dd349a6d35bb05399a00620c
---
 Libraries/Components/RefreshControl/RefreshControl.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Libraries/Components/RefreshControl/RefreshControl.js b/Libraries/Components/RefreshControl/RefreshControl.js
index 64e9a76ea..f79305d93 100644
--- a/Libraries/Components/RefreshControl/RefreshControl.js
+++ b/Libraries/Components/RefreshControl/RefreshControl.js
@@ -133,7 +133,10 @@ const RefreshControl = React.createClass({
 
   _onRefresh() {
     this.props.onRefresh && this.props.onRefresh();
-    this._nativeRef.setNativeProps({refreshing: this.props.refreshing});
+
+    if (this._nativeRef) {
+      this._nativeRef.setNativeProps({refreshing: this.props.refreshing});
+    }
   },
 });