Simple App Delegate method to show an UIAlertController (in Swift)

Question

In obj-C when another iOS app (mail attachment, web link) was tapped with a file or link associated with my app. I would then catch this on openURL or didFinishLaunchi

Answer 1

The accepted answer in Swift 3 in case it helps anyone:

self.window?.rootViewController?.present(importAlert, animated: true, completion: nil)