I want to call a method infinitely while the program is running to check for the change of state of something. Is it possible to do this when programming for the iPhone?
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I want to call a method infinitely while the program is running to check for the change of state of something. Is it possible to do this when programming for the iPhone?
It is possible, just use a repeating
NSTimer.However I would advise against the continuous polling to get the state – better to setup a callback/delegate/notification pattern to notify any observers of a state change.
You could also use Key Value Observing (KVO) to get notified when a value is updated.
Lots of food for thought and terms to research.