fix: don't report trait changes when in background

alanjhughes · alanjhughes · commit 855f22793dd1 · 2023-09-14T09:42:43.000+01:00
diff --git a/packages/react-native/React/Base/RCTRootView.m b/packages/react-native/React/Base/RCTRootView.m
@@ -368,6 +368,9 @@ - (void)contentViewInvalidated
 - (void)traitCollectionDidChange:(UITraitCollection *)previousTraitCollection
 {
   [super traitCollectionDidChange:previousTraitCollection];
+  if (RCTSharedApplication().applicationState == UIApplicationStateBackground) {
+    return;
+  }
 
   [[NSNotificationCenter defaultCenter]
       postNotificationName:RCTUserInterfaceStyleDidChangeNotification

Original file line number	Diff line number	Diff line change
`@@ -368,6 +368,9 @@ - (void)contentViewInvalidated`
`368`	`368`	`- (void)traitCollectionDidChange:(UITraitCollection *)previousTraitCollection`
`369`	`369`	`{`
`370`	`370`	`[super traitCollectionDidChange:previousTraitCollection];`
	`371`	`+ if (RCTSharedApplication().applicationState == UIApplicationStateBackground) {`
	`372`	`+ return;`
	`373`	`+ }`
`371`	`374`
`372`	`375`	`[[NSNotificationCenter defaultCenter]`
`373`	`376`	`postNotificationName:RCTUserInterfaceStyleDidChangeNotification`