macOS Swift UI App Life Cycle vs NSApplicationDelegate

Question

milutz OP

Created Sep ’20

Replies 2

Boosts 0

Views 3.5k

Participants 2

Hi,

is it possible to have access to NSApplicationDelegate methods like

Code Block application(_ sender: NSApplication, openFiles filenames: [String])

when using the Swift UI App Life Cycle?

With "access" I mean equivalent functionality. I know there is support for a document based app using the Swift UI App Life Cycle, which would seem to resolve the issue for that particular openFiles delegate method, but for various reasons I can't use the document based app life cycle.

Thank you!

Cheers, Michael

Answered by mjcotr in 631332022

Have you tried @NSApplicationDelegateAdaptor?
I've only tested it briefly with applicationDidFinishLaunching(), but that method does get called.

Code Block @main
struct TestApp: App {
  @NSApplicationDelegateAdaptor(AppDelegate.self) var appDelegate
	var body: some Scene {}
}
class AppDelegate: NSObject, NSApplicationDelegate {
    func applicationDidFinishLaunching(_ notification: Notification) {
        print("hello")
    }
}

Boost

Answer 1

mjcotr OP

Sep ’20

Accepted Answer

Have you tried @NSApplicationDelegateAdaptor?
I've only tested it briefly with applicationDidFinishLaunching(), but that method does get called.

Code Block @main
struct TestApp: App {
  @NSApplicationDelegateAdaptor(AppDelegate.self) var appDelegate
	var body: some Scene {}
}
class AppDelegate: NSObject, NSApplicationDelegate {
    func applicationDidFinishLaunching(_ notification: Notification) {
        print("hello")
    }
}

5

Answer 2

milutz OP

Sep ’20

(This should be a reply to the answer from mjcotr. But for some reason the reply does not seem to work as expected.)

Thank you, that looks exactly like what I was looking for. I haven't had heard about @NSApplicationDelegateAdaptor before.
I'll give it a try!

Thanks, Michael

0