How to add multiple line text in UIActionSheet

Question

How to add multi line text with custom font in UIActionSheet swift.I have tried \n.but this is not working.is this possible or not.

Here is the my code.

    alert.addAction(UIAlertAction(title: "line 1.\n %C line 2,\n %C line", style: .default , handler:{ (UIAlertAction)in
        print("User click Approve button")
    }))

    alert.addAction(UIAlertAction(title: "Edit", style: .default , handler:{ (UIAlertAction)in
        print("User click Edit button")
    }))

    alert.addAction(UIAlertAction(title: "Delete", style: .destructive , handler:{ (UIAlertAction)in
        print("User click Delete button")
    }))

    alert.addAction(UIAlertAction(title: "Dismiss", style: .cancel, handler:{ (UIAlertAction)in
        print("User click Dismiss button")
    }))

    self.present(alert, animated: true, completion: {
        print("completion block")
    })

Dombrowski

Answer 1

Try the below code.

let optionMenu = UIAlertController(title: "Choose Class", message: "", preferredStyle: .actionSheet)
let course1 = UIAlertAction(title: "Computer Science(1st year) \n Digital Electronics", style: .default)
let course2 = UIAlertAction(title: "Computer Science(2nd year) \n Digital Electronics", style: .default)
let cancel = UIAlertAction(title: "Cancel", style: .cancel)
optionMenu.addAction(course1)
optionMenu.addAction(course2)
optionMenu.addAction(cancel)
self.present(optionMenu, animated: true, completion: nil)

// Setting up the number of lines and doing a word wrapping        
UILabel.appearance(whenContainedInInstancesOf:[UIAlertController.self]).numberOfLines = 2
UILabel.appearance(whenContainedInInstancesOf:[UIAlertController.self]).lineBreakMode = .byWordWrapping

Output

Zebapda

Thanks chirag for your valuable reply.this is work for multiple line can you please suggest me how to add multiple font.. – Dombrowski

Okay I will add. – Dombrowski

Answer 2

I'm showing the 2 text values in UIAlertAction. To use multiple fonts, colors, and other attributes, we have to use attributedText property. I used the following code.

UILabel.appearance(whenContainedInInstancesOf: [UIAlertController.self]).numberOfLines = 0

let actionSheetController = UIAlertController(title: nil, message: "Call", preferredStyle: .actionSheet)
actionSheetController.view.tintColor = UIColor.red

for key in phoneNumbers.keys {
    let phoneNumber = phoneNumbers[key] ?? ""
    let actionTitle = "\(key)\n\(phoneNumber)"
    let phoneNumberAction = UIAlertAction(title: actionTitle, style: .default) { action -> Void in
        self.makeCall(phoneNumber)
    }
    actionSheetController.addAction(phoneNumberAction)

    let attributedText = NSMutableAttributedString(string: actionTitle)

    let range = NSRange(location: key.count, length: attributedText.length - key.count)

    attributedText.addAttribute(NSAttributedString.Key.foregroundColor, value: UIColor.gray, range: range)

    guard let label = (phoneNumberAction.value(forKey: "__representer")as? NSObject)?.value(forKey: "label") as? UILabel else { return }
    label.attributedText = attributedText
}

let cancelAction = UIAlertAction(title: LOCALSTR("Cancel"), style: .cancel) { action -> Void in

}
actionSheetController.addAction(cancelAction)

present(actionSheetController, animated: true, completion: nil)

Cornel

Btw, I see another problem. #61216917 – Cornel

unable to access label property – Brickey

@KedarSukerkar You mean guard let label = (phoneNumberAction.value(forKey: "__representer")as? NSObject)?.value(forKey: "label") as? UILabel else { return } does not work or label.attributedText = attributedText? – Cornel

Yes.....sorry that was mistake from my side.....i was accessing label before presenting alert. Thats why was getting nil... Also, i wasn't able to change the font property..any solutions for it. – Brickey

@KedarSukerkar It's easy. You can just add the normal front. – Cornel

yeah, i had added similar to this..attributedText.addAttribute(NSAttributedString.Key.font, value: myFont, range: range)....but there was no effect – Brickey