Mac Background Scheduler

Question

garrett35 OP

Created Dec ’19

Replies 3

Boosts 0

Participants 2

Hey there,

I wanted to use this to create a background task for my MacOS App.

Unfortunately I don't knwo how to insert the code.

I created

let activity = NSBackgroundActivityScheduler(identifier: "com.example.MyApp.work")

in AppDelegate and insert

activity.repeats = true
activity.interval = 30

in applicationDidFinishLaunching() to initialize the values.

But where is the right place to insert

activity.schedule() { (completion: NSBackgroundActivityScheduler.CompletionHandler) in
            // Perform the activity
            print("Hello World")
            self.completion(NSBackgroundActivityScheduler.Result.Finished)
        }

in that way that this application will get a background task, which is not stopped if I quit (or leave) the application?

Maybe that's an sutpid question but if so it sould be easy to answer ;-)

Thanks a lot!

Boost

Answer 1

DTS Engineer OP

Apple

Dec ’19

which is not stopped if I quit (or leave) the application?

That’s not how

NSBackgroundActivityScheduler

works. Rather, it assumes that your app is running and then it runs associated block when it’s a good time to perform the activity. This is helpful, for example, if you need to index a big database but want to avoid doing that while the user is actively using the Mac.

If you want this activity to run after the user has quit your app, you should move that work to a login item so that it’s always running.

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

ps DTS is closed 21 Dec through 1 Jan.

0

Answer 2

garrett35 OP

Jan ’20

The idea with the login item is really good.

I'll try to find instructions how to implement, if I'm not succesfull I'll contact you another time.

Best regards

0

Answer 3

DTS Engineer OP

Apple

Jan ’20

I'll try to find instructions how to implement [a login item]

There are many different ways to implement a login item. The approach I recommend is that one shown by the AppSandboxLoginItemXPCDemo sample code.

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

0