SWIFT - Generic Alert

SWIFT - Generic Alert.swift

//  Error Alert - Usage Example: showAlert(withTitle: "Oops", message: "Please fill in both gravity fields.", viewController: self)
func showAlert(withTitle title: String, message: String, viewController: UIViewController) {
	if viewController.presentedViewController == nil { // Prevent multiple alerts at the same time
		let localizedTitle = NSLocalizedString(title, comment: "")
		let localizedMessage = NSLocalizedString(message, comment: "")
		let alert = UIAlertController(title: localizedTitle, message: localizedMessage, preferredStyle: .alert)
		let action = UIAlertAction(title: "OK", style: .default, handler: nil)
		alert.addAction(action)
		
		viewController.present(alert, animated: true, completion: nil)
	}
}