Connect to ViewController from AppDelegate (Swift)

Question

I have created a new OS X Cocoa Application using the standard Xcode Swift template (using StoryBoards).

I have implemented an IBAction in AppDelegate.swift to handle wh

Answer 1

You can access the mainWinow property and the contentViewController property to create a reference to your custom ViewController class. This is similar to the iOS rootViewController property.

let rootViewController = NSApplication.shared().mainWindow?.windowController?.contentViewController as! ViewController

Now you can use this reference to access IBOutlets on your main storyboard from your AppDelegate.

rootViewController.myTextView.textStorage?.mutableString.setString("Cats and dogs.")

This is good for a simple app with one Window with one ViewController.