From 00a942c905e4c08e115b30e5c3188fd5e3b5e9f1 Mon Sep 17 00:00:00 2001
From: ajpaulingalls <ingallsp@aljazeera.net>
Date: Wed, 11 Nov 2020 11:00:07 -0800
Subject: [PATCH] Update the cached dimensions when orientation changes
 (#30324)

Summary:
Currently the dimensions are created once, and then cached.  This change will reload the dimensions when the device orientation changes to insure that dimension update events follow orientation changed events.

this should help address the following issues, that I know of:
https://github.com/facebook/react-native/issues/29105
https://github.com/facebook/react-native/issues/29451
https://github.com/facebook/react-native/issues/29323

## Changelog

<!-- Help reviewers and the release process by writing your own changelog entry. For an example, see:
https://github.com/facebook/react-native/wiki/Changelog
-->

[Android] [Fixed] - Dimension update events are now properly sent following orientation change

Pull Request resolved: https://github.com/facebook/react-native/pull/30324

Test Plan: Open up RNTester app.  Select the Dimensions API list item.  Rotate the device and verify that the dimensions are correct based on orientation.

Reviewed By: fkgozali

Differential Revision: D24874733

Pulled By: ejanzer

fbshipit-source-id: 867681ecb009d368a2ae7b67d94d6355e67dea7b
---
 ReactAndroid/src/main/java/com/facebook/react/ReactRootView.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ReactAndroid/src/main/java/com/facebook/react/ReactRootView.java b/ReactAndroid/src/main/java/com/facebook/react/ReactRootView.java
index 30b50691b9651a..33076a0729629b 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/ReactRootView.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/ReactRootView.java
@@ -705,6 +705,7 @@ private void checkForDeviceOrientationChanges() {
         return;
       }
       mDeviceRotation = rotation;
+      DisplayMetricsHolder.initDisplayMetrics(getContext().getApplicationContext());
       emitOrientationChanged(rotation);
     }