Fix wrong I18nManager.isRTL value on iOS

scarlac · web-flow · commit 58357f883116 · 2025-05-27T14:25:33.000-07:00
diff --git a/packages/react-native/React/Modules/RCTI18nUtil.m b/packages/react-native/React/Modules/RCTI18nUtil.m
@@ -98,7 +98,8 @@ - (BOOL)isDevicePreferredLanguageRTL
 // Check if the current application language is RTL
 - (BOOL)isApplicationPreferredLanguageRTL
 {
-  NSWritingDirection direction = [NSParagraphStyle defaultWritingDirectionForLanguage:nil];
+  NSString *language = [[NSLocale preferredLanguages] firstObject];
+  NSWritingDirection direction = [NSParagraphStyle defaultWritingDirectionForLanguage:language];
   return direction == NSWritingDirectionRightToLeft;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -98,7 +98,8 @@ - (BOOL)isDevicePreferredLanguageRTL`
`98`	`98`	`// Check if the current application language is RTL`
`99`	`99`	`- (BOOL)isApplicationPreferredLanguageRTL`
`100`	`100`	`{`
`101`		`- NSWritingDirection direction = [NSParagraphStyle defaultWritingDirectionForLanguage:nil];`
	`101`	`+ NSString *language = [[NSLocale preferredLanguages] firstObject];`
	`102`	`+ NSWritingDirection direction = [NSParagraphStyle defaultWritingDirectionForLanguage:language];`
`102`	`103`	`return direction == NSWritingDirectionRightToLeft;`
`103`	`104`	`}`
`104`	`105`