AutoLayout + RTL + UILabel text alignment

Question

I\'m finally getting round to wrestling with Auto Layout and can\'t seem to figure out how to get right-to-left (RTL) support to work the way I\'d expect/want...

I h

Answer 1

@Aviel answer as a swift 4 UILabel extension

extension UILabel {
    func decideTextDirection () {
        let tagScheme = [NSLinguisticTagScheme.language]
        let tagger    = NSLinguisticTagger(tagSchemes: tagScheme, options: 0)
        tagger.string = self.text
        let lang      = tagger.tag(at: 0, scheme: NSLinguisticTagScheme.language,
                                          tokenRange: nil, sentenceRange: nil)

        if lang?.rawValue.range(of: "he") != nil ||  lang?.rawValue.range(of: "ar") != nil {
            self.textAlignment = NSTextAlignment.right
        } else {
            self.textAlignment = NSTextAlignment.left
        }
    }
}

usage

label.text = "كتابة باللغة العربية" // Assign text
label.decideTextDirection()          // Decide direction