From f43039da8764d0f22d7ccb9be251e7433cf3d8c7 Mon Sep 17 00:00:00 2001
From: David Vacca <dvacca@fb.com>
Date: Mon, 17 Jun 2019 21:39:07 -0700
Subject: [PATCH] Force setConstraints to run in the JS Thread

Summary: This diff forces the method: scheduler.constraintSurfaceLayout to run on the JS thread.

Reviewed By: JoshuaGross

Differential Revision: D15845768

fbshipit-source-id: de2aa69f301770aaf6cb7c3f5670548a3b6110df
---
 .../facebook/react/fabric/FabricUIManager.java  | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java b/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java
index 1363f230fb0..1fe9fede1ff 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java
@@ -418,12 +418,17 @@ public class FabricUIManager implements UIManager, LifecycleEventListener {
   public void updateRootLayoutSpecs(
       final int rootTag, final int widthMeasureSpec, final int heightMeasureSpec) {
 
-    mBinding.setConstraints(
-        rootTag,
-        getMinSize(widthMeasureSpec),
-        getMaxSize(widthMeasureSpec),
-        getMinSize(heightMeasureSpec),
-        getMaxSize(heightMeasureSpec));
+    mReactApplicationContext.runOnJSQueueThread(new Runnable() {
+      @Override
+      public void run() {
+        mBinding.setConstraints(
+          rootTag,
+          getMinSize(widthMeasureSpec),
+          getMaxSize(widthMeasureSpec),
+          getMinSize(heightMeasureSpec),
+          getMaxSize(heightMeasureSpec));
+      }
+    });
   }
 
   public void receiveEvent(int reactTag, String eventName, @Nullable WritableMap params) {