UIAlertController change font color

Question

Here\'s my code that creates the UIAlertController

    // Create the alert controller
    var alertController = UIAlertController(title: \"Are you sure you want          


        

Answer 1

I have faced the same issue and spent a lot of time trying to find the best way to change it's color for iOS 9 and iOS 10 + because it's implemented in a different way.

Finally I have made an extension for UIViewController. In extension I have added custom function which is almost equal to default function "present", but performs fix of colours. Here you are my solution. Applicable for swift 3+, for projects with target starting from iOS 9:

extension UIViewController {
    /// Function for presenting AlertViewController with fixed colors for iOS 9
    func presentAlert(alert: UIAlertController, animated flag: Bool, completion: (() -> Swift.Void)? = nil){
        // Temporary change global colors
        UIView.appearance().tintColor = UIColor.red // Set here whatever color you want for text
        UIApplication.shared.keyWindow?.tintColor = UIColor.red // Set here whatever color you want for text

        //Present the controller
        self.present(alert, animated: flag, completion: {
            // Rollback change global colors
            UIView.appearance().tintColor = UIColor.black // Set here your default color for your application.
            UIApplication.shared.keyWindow?.tintColor = UIColor.black // Set here your default color for your application.
            if completion != nil {
                completion!()
            }
        })
    }
}

To use this fixed function, you should just call this function instead of default present function. Example:

self.presentAlert(alert: alert, animated: true)

Same solution, but for UIActivityViewController:

extension UIViewController {
    /// Function for presenting UIActivityViewController with fixed colors for iOS 9 and 10+
    func presentActivityVC(vc: UIActivityViewController, animated flag: Bool, completion: (() -> Swift.Void)? = nil) {
        // Temporary change global colors for changing "Cancel" button color for iOS 9 and 10+
        if UIDevice.current.systemVersion.range(of: "9.") != nil {
            UIApplication.shared.keyWindow?.tintColor = ColorThemes.alertViewButtonTextColor
        } else {
            UILabel.appearance().textColor = ColorThemes.alertViewButtonTextColor
        }

        self.present(vc, animated: flag) {
            // Rollback for changing global colors for changing "Cancel" button color for iOS 9 and 10+
            if UIDevice.current.systemVersion.range(of: "9.") != nil {
                UIApplication.shared.keyWindow?.tintColor = ColorThemes.tintColor
            } else {
                UILabel.appearance().textColor = ColorThemes.textColorNormal
            }
            if completion != nil {
                completion!()
            }
        }
    }
}

I hope this will help somebody and will save a lot of time. Because my time was not saved by such detailed answer :)