From dadfe40f55f0fc21e833e36ac2ad67ec4160af25 Mon Sep 17 00:00:00 2001
From: Chace Liang <chaceliang@fb.com>
Date: Fri, 26 Aug 2016 10:43:43 -0700
Subject: [PATCH] do not reset layout state if they are the same in
 NavigationTransitioner

Reviewed By: fred2028

Differential Revision: D3773370

fbshipit-source-id: 7999cada80361b68f77f2433c6d2194ee6d26c73
---
 Libraries/NavigationExperimental/NavigationTransitioner.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Libraries/NavigationExperimental/NavigationTransitioner.js b/Libraries/NavigationExperimental/NavigationTransitioner.js
index 2715fcf15..d048d7f37 100644
--- a/Libraries/NavigationExperimental/NavigationTransitioner.js
+++ b/Libraries/NavigationExperimental/NavigationTransitioner.js
@@ -187,7 +187,10 @@ class NavigationTransitioner extends React.Component<any, Props, State> {
 
   _onLayout(event: any): void {
     const {height, width} = event.nativeEvent.layout;
-
+    if (this.state.layout.initWidth === width &&
+      this.state.layout.initHeight === height) {
+      return;
+    }
     const layout = {
       ...this.state.layout,
       initHeight: height,