From de9d22ee7e9cd7b2c94e70f233ba270a2a61c953 Mon Sep 17 00:00:00 2001
From: Eric Vicenti <evv@fb.com>
Date: Fri, 12 Aug 2016 17:05:06 -0700
Subject: [PATCH] Ensure NavigationTransitioner props.onTransitionEnd happens
 after scene cleanup

Summary:
We only want to call onTransitionEnd after the transition has fully completed, including scene cleanup.

This will help avoid race conditions when we start new navigation after a transition completes.

Reviewed By: fkgozali

Differential Revision: D3712235

fbshipit-source-id: 146f30a0caf3d2fe164285fbef12293b7b161c6e
---
 .../NavigationExperimental/NavigationTransitioner.js  | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/Libraries/NavigationExperimental/NavigationTransitioner.js b/Libraries/NavigationExperimental/NavigationTransitioner.js
index e0eb6cdc8348ec..2715fcf15f2c88 100644
--- a/Libraries/NavigationExperimental/NavigationTransitioner.js
+++ b/Libraries/NavigationExperimental/NavigationTransitioner.js
@@ -217,12 +217,13 @@ class NavigationTransitioner extends React.Component<any, Props, State> {
     };
 
     this._transitionProps = buildTransitionProps(this.props, nextState);
-    this.setState(nextState);
 
-    this.props.onTransitionEnd && this.props.onTransitionEnd(
-      this._transitionProps,
-      prevTransitionProps,
-    );
+    this.setState(nextState, () => {
+      this.props.onTransitionEnd && this.props.onTransitionEnd(
+        this._transitionProps,
+        prevTransitionProps,
+      );
+    });
   }
 }