NSLocale lineDirectionForLanguage example ios

lineDirectionForLanguage:

Returns the line direction for the specified ISO language code.

+ (NSLocaleLanguageDirection)lineDirectionForLanguage:(NSString*)isoLangCode

Parameters

isoLangCode

The ISO language code.

Return Value of [NSLocale lineDirectionForLanguage]

Returns the line direction for the language. See “NSLocaleLanguageDirection” for possible values. If the appropriate direction can’t be determinedNSLocaleLanguageDirectionUnknown is returned.

Example of [NSLocale lineDirectionForLanguage]

NSLocale *locale = [NSLocale currentLocale];
NSString *langCode = [locale objectForKey:NSLocaleLanguageCode];
NSLocaleLanguageDirection direction = [NSLocale lineDirectionForLanguage:langCode];

Example of [NSLocale lineDirectionForLanguage]

- (NSArray *)sortByUIViewOrigin {
    NSLocaleLanguageDirection horizontalDirection = [NSLocale characterDirectionForLanguage:[[NSLocale currentLocale] objectForKey:NSLocaleLanguageCode]];
    NSLocaleLanguageDirection verticalDirection = [NSLocale lineDirectionForLanguage:[[NSLocale currentLocale] objectForKey:NSLocaleLanguageCode]];
    UIView *window = [[UIApplication sharedApplication] delegate].window;
    return [self sortedArrayUsingComparator:^NSComparisonResult(id object1, id object2) {
        CGPoint viewOrigin1 = [(UIView *)object1 convertPoint:((UIView *)object1).frame.origin toView:window];
        CGPoint viewOrigin2 = [(UIView *)object2 convertPoint:((UIView *)object2).frame.origin toView:window];
        if (viewOrigin1.y < viewOrigin2.y) {
            return (verticalDirection == kCFLocaleLanguageDirectionLeftToRight) ? NSOrderedDescending : NSOrderedAscending;
        }
        else if (viewOrigin1.y > viewOrigin2.y) {
            return (verticalDirection == kCFLocaleLanguageDirectionLeftToRight) ? NSOrderedAscending : NSOrderedDescending;
        }
        else if (viewOrigin1.x < viewOrigin2.x) {
            return (horizontalDirection == kCFLocaleLanguageDirectionTopToBottom) ? NSOrderedDescending : NSOrderedAscending;
        }
        else if (viewOrigin1.x > viewOrigin2.x) {
            return (horizontalDirection == kCFLocaleLanguageDirectionTopToBottom) ? NSOrderedAscending : NSOrderedDescending;
        }
        else return NSOrderedSame;
    }];
}