How to create uialertcontroller in global swift

Question

I\'m trying to create uialertcontroller in Config.swift file as follow.

static func showAlertMessage(titleStr:String, messageStr:St         


        

Answer 1

What I'm using based on the solution by @William Hu:

func popup(caller:UIViewController, style:UIAlertControllerStyle? = UIAlertControllerStyle.alert,
        title:String, message:String, buttonTexts:[String], buttonStyles:([UIAlertActionStyle?])? = nil,
        handlers:[((UIAlertAction) -> Void)?], animated:Bool? = nil, completion: (() -> Void)? = nil) {
    let alert = UIAlertController(title: title, message: message, preferredStyle: style!)
    for i in 0..= buttonStyles!.count || buttonStyles![i] == nil ?
                UIAlertActionStyle.default : buttonStyles![i]!),
            handler: (i >= handlers.count || handlers[i] == nil ? nil : handlers[i]!)))
    }
    caller.present(alert, animated: animated != nil ? animated! : true, completion: completion)
}

1. Single function gives Alert by default and can optionally be used for ActionSheet.
2. Arrays buttonTexts, buttonStyles and handlers can be of unequal sizes as per requirement.
3. Actions can be styled.
4. Animated can be specified.
5. Optional block can be specified to be executed when presentation finishes.

Usage:

popup(caller: self, style: UIAlertControllerStyle.alert,
        title: "Title", message: "Message",
        buttonTexts: ["Destructive", "Cancel", "OK"],
        buttonStyles: [UIAlertActionStyle.destructive, UIAlertActionStyle.cancel],
        handlers: [nil], animated: false)