How to repeat a piece of code in a method every second

Question

I need to repeate a piece of code in my method every second. I don't want to use NSTimer or something like that because the code needs to be in the same method because of some variables. I am looking maybe for a way with grand central dispatch but I have no idea how. Here is an example of what I want to achieve:

- (void)myMethod {

     // Repeat this code every second
     my awesome code
     // End of code repetition

     other awesome code
}

You should take a look at `NSTimer`: http://stackoverflow.com/questions/1449035/how-do-i-use-nstimer/1449104#1449104 — IluTov, Aug 19 '13 at 10:47
If you need to use variables, make a property for them. There's really no other way than making a timer or making another thread. — IluTov, Aug 19 '13 at 10:48
Why? What's wrong with selectors? I think there is an addition to NSTimer where you can pass a block on Github, let me find it. — IluTov, Aug 19 '13 at 10:51
Maybe this can help: https://github.com/jivadevoe/NSTimer-Blocks — IluTov, Aug 19 '13 at 10:52
@NSAddict Oh yeah man, this is a m a z i n g!!! Problem solved! — BalestraPatrick, Aug 19 '13 at 11:15

Puru · Answer 1 · 2013-09-13T11:01:31.403

-2

int counter;

in .h file

counter=1;

in viewDidLoad

Whenever you want want not to repeat the code put counter=0;

 -(void)myMethod 
 {

 // Repeat this code every second
 if(counter==1)
 {  
    [self performSelector:@selector(myMethod) withObject:nil afterDelay:0.5];
 }

 // End of code repetition AUTOMATICALLY
}

edited Sep 13 '13 at 11:01

answered Aug 19 '13 at 11:47

Puru

32
7

It doesn't achieve the goal. It repeats the code *immediately*. Also it will crash if it repeats too many times. – Catfish_Man Sep 12 '13 at 01:39
@Catfish_Man: Ithink you hav't read this line : "Whenever you want want not to repeat the code put counter=0;" – Puru Sep 13 '13 at 06:01
The question wasn't about ending repetition. It was about repeating after a delay. – Catfish_Man Sep 13 '13 at 07:00
That's closer, but still doesn't meet the original goal. For reasons I can't understand, the person doesn't want to use selectors. I think that's silly, but it's what they asked. – Catfish_Man Sep 13 '13 at 18:47

How to repeat a piece of code in a method every second

1 Answers1