Running js function in the background (iOS)

How-to Discussions
1

I have a timer function which runs using setInterval and calls itself every second to count seconds. After a certain time is does something, for example vibrates. On android, this works fine, I can switch out of the app, and go into another app, and after the time is over, it will vibrate.

In iOS this doesn’t happen at all, everything pauses until I open up the app again. I’ve tried:

  • Enabling background modes in xcode
  • Enabling the audio background mode in xcode

Thanks!

2

Are you sure iOS supports this? When I read this: https://developer.apple.com/library/ios/documentation/iPhone/Conceptual/iPhoneOSProgrammingGuide/BackgroundExecution/BackgroundExecution.html it isn’t one of the allowed usecases.

3

You’re right, but the time circle app DOES seem to run in the background.

From what I’ve read apps are allowed 180secobds of background time before they’re totally suspended.