Repeating a method every few seconds in Objective C

Question

I have a method -(void)foo that I want to call once in viewDidAppear, then I want it to repeat every n seconds, where n is some integer. How can I do this?

I tried this, but it's not repeating:

[NSTimer scheduledTimerWithTimeInterval:7.0 target:nil selector:@selector(foo) userInfo:nil repeats:YES];

Take a look at http://stackoverflow.com/questions/1449035/how-do-i-use-nstimer. — rid, Oct 08 '11 at 23:09

score 17 · Accepted Answer · answered Oct 08 '11 at 23:11

17

The problem is that target is nil.

What this timer does is every 7 seconds it calls [nil foo], which does nothing.

If you want to call the method foo on the object that creates the timer, use target:self

answered Oct 08 '11 at 23:11

cobbal

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Repeating a method every few seconds in Objective C

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