NSTimer invalidate at a certain time!

[ShayansMind]

Hi everybody,

So I'm coding an app where there is a timer that counts down from 15 seconds.. I want the app to invalidate the timer at 0 seconds and display an actionsheet telling the time. I have the code for the actionsheet and everything else, but I can't figure out the code for the timer to invalidate at 0 seconds.

Here is my code

-(void)randomMainVoid {

mainInt --;
time.text = [NSString stringWithFormat:@"Time: %d", mainInt];
}

-(void)viewDidLoad {

mainInt = 15;
randomMain = [NSTimer scheduledTimerWithTimeInterval-1.0/-1.0) target:self selector:@selector(randomMainVoid) userInfo:nil repeats:YES];

}

the timer counts DOWN from 15 but then goes to the negatives I want it to stop at 0 how do I do that?

Thanks for anyhelp

[Batman]

i would use:

 if (mainInt > 0) {
mainInt--;
time.text = [NSString stringWithFormat:@"Time: %d", mainInt];
}

[ZunePod]

Originally Posted by ShayansMind

Hi everybody,

So I'm coding an app where there is a timer that counts down from 15 seconds.. I want the app to invalidate the timer at 0 seconds and display an actionsheet telling the time. I have the code for the actionsheet and everything else, but I can't figure out the code for the timer to invalidate at 0 seconds.

Here is my code

-(void)randomMainVoid {
	if(mainInt >0){
	mainInt --;
	time.text = [NSString stringWithFormat:@"Time: %d", mainInt];
        }
        if(mainInt == 0){
        [randomMain invalidate];
        }
}	

-(void)viewDidLoad {

mainInt = 15;
	randomMain = [NSTimer scheduledTimerWithTimeInterval:(-1.0/-1.0) target:self selector:@selector(randomMainVoid) userInfo:nil repeats:YES];	

}

the timer counts DOWN from 15 but then goes to the negatives I want it to stop at 0 how do I do that?

Thanks for anyhelp

That should work, although you should use else, instead of the second if, but i cba writing it.

[ShayansMind]

Thanks everyone for the codes, I will try them out and if they work I will post back

[ShayansMind]

Originally Posted by ZunePod

That should work, although you should use else, instead of the second if, but i cba writing it.

Thanks the code works and I implemented my actionsheet and it works too! Thanks so much, I used your code not the above 1

[ZunePod]

Well it is the same code apart from the second bit.

Thanks anyway.