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Nathanael Carper
Nathanael Carper

Reputation: 312

Make OS X Swift application run in the background

I'm making a Clock app in swift for OS X. I have a Timer in my Clock app that works kinda like the one in iOS. My problem is whenever I put my app into the background or minimize it the application kinda freezes or stops counting after being in the background for a minute or so. It starts working right where it left off when I bring it into the foreground. Is there anyway I can make my application run in the background? I've looked and haven't found anything that works.

Thanks to anyone who can help.

Upvotes: 2

Views: 2530

Answers (1)

Ken Thomases
Ken Thomases

Reputation: 90521

Are you relying on the timer to "count" the seconds? You should only use the timer to provoke an update of the display. When the timer fires, you should check the actual time and calculate what should be displayed based on that time, not how many times your timer has fired. It should never be the case that your app "starts working right where it left off" (if, by that, you mean that it shows the same time as when it was backgrounded and starts counting up from there again).

What's probably happening is that your app is being put into App Nap. Also see the Energy Efficiency Guide for Mac Apps.

Upvotes: 1

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