UIAlertController+LeftAlignedMessage.swift

import UIKit

extension UIAlertController {
    
    func setLeftAlignedMessage(_ message: String) {
        let paragraphStyle = NSMutableParagraphStyle()
        paragraphStyle.alignment = .left
        
        let messageText = NSMutableAttributedString(
            string: message,
            attributes: [
                NSParagraphStyleAttributeName: paragraphStyle,
                NSFontAttributeName : UIFont.preferredFont(forTextStyle: UIFontTextStyle.body),
                NSForegroundColorAttributeName : UIColor.black
            ]
        )
        setValue(messageText, forKey: "attributedMessage")
    }
}