swift App delegate code example

Example 1: how to get appdelegate object in swift

let appDelegate = UIApplication.shared.delegate as! AppDelegate
let aVariable = appDelegate.someVariable

Example 2: how to call app delegate function in swift

// get a reference to the app delegate
guard let let appDelegate: AppDelegate? = UIApplication.shared.delegate as? AppDelegate else { return }

// call function
appDelegate.someFunc()