Make UILabel text Right Aligned if the text is in Arabic

Question

I have implemented Language Localization in my iOS App. So, now user can set the Arabic Language in my iPad Application.

I am getting the localized string response from the server and now I want to set this localized string to my UILabel in Right To Left format with Right Alignment.

Update :

My server response is already in RTL format. Now, I just wanted to set the text alignment to right when I have Arabic text in my UILabel.

Right now I have to write code to set the alignment of UILabel based on the language.

So, I just want to know if there is any property available for UILabel by setting which I can make the text of UILabel Right Aligned in case of Arabic Language.

Precept

please apply arabic font . maybe it will solve your issue. – Bagdad

Try this: #18744947 – Distinguish

If you set the attributedText property for the label, you can apply a mutable paragraph style with the RTL baseWritingDirection set. But, the label should apply the correct writing direction to the text. If you're using constraints, make sure you have your Leading and Trailing constraints set up correctly. – Lempres

I want all my labels to be, You mean in whole project ? – Foray

check the language like in the question #6325573 and if it is Arabic change the label's alignment. – Anachronistic

Answer 1

For Swift3 //MARK: UILabel extension

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

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

to use this add following with your label :

detailLabel.text = details[0]

detailLabel.decideTextDirection()

Eolande

Answer 2

have you try this.

 [[self label] setTextAlignment:NSTextAlignmentNatural];

AutoLayout + RTL + UILabel text alignment

Hope this will solve your problem.

Uncouth

No, this will not do what the question is asking for. Natural alignment right- or left-aligns text based on the language the application is running in, not based on the script of the text in the label. The question specifically asks about an app which has an internal language switcher, so this will not work. – Fahey

Answer 3

Display the text normally as you do in english if you are getting arabic text from server no need to align it. Just right align the text.

Heterocyclic

That's what I am doing. I just wanted to know if there is any property available for UILabel which can set the Alignment of UILabel to right if it gets the Arabic Text. Right now I have to write a code to set the alignment based on the language. I just want to know if there is any simpler way using which UILabel can set its alignment. – Precept

@Heterocyclic : did you find solution for this? – Hydr

Answer 4

Make your text label the entire width of the view. Then the text will right align from the right side of the screen.

Inaugural

Answer 5

For anyone wanting an example using the NaturalLanguage library (NSLinguisticTagger is deprecated). This builds on @jaspreetkour's answer, and also works with attributed text.

extension UILabel {

    func decideTextDirection () {
        let recognizer = NLLanguageRecognizer()
        var txt = self.text ?? ""
        if txt.isEmpty {
            // check attributed text
            txt = self.attributedText?.string ?? ""
        }
        if !txt.isEmpty {
            recognizer.processString(txt)
            if let language = recognizer.dominantLanguage {
                switch language {
                case .arabic:
                    self.textAlignment = .right
                default:
                    self.textAlignment = .left
                }
            }
        }
    }
}

Catchall