Question

I know how to set a timer and when timer expires, it fires and a action is caught.
What I’m expecting is that after 30 seconds of every one hour of real time that that "xx:00:30" I have to check my server for updates.
I know how to communicate with server. But how can I create such a timer that fires every "xx:00:30".

I don’t want to run the timer if the app is in background.
Any ideas on how to do this?

Answer 1

As mentioned by Marcus in his last message,

NSTimer's initWithFireDate:interval:target:selector:userInfo:repeats: or setFireDate:

works.