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")
    })

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

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)