Question

I’m using this call to switch image every 4 seconds:

 - (void) settheimage {
   cur+=1;
   waits=0;
   [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(settheimage)   object:nil];
   jpg = [NSString stringWithFormat:@"%@/%@_%d",current_anim,current_anim, cur];
   img = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:jpg ofType:@"jpg"]];
    [self performSelector:@selector(settheimage) withObject:nil afterDelay:4.0];
}

it works on the first image but after that it crashes.
i don’t want to use uiimage animation because i have a lot of images and the loading of the uiimage animation takes a lot of time.

Answer 1

I would guess that current_anim is (auto)released by the time your method is called, leading to a dangling pointer and crash (EXC_BADACCESS, I suppose?). You need to retain it manually, make it a retained property, or start using ARC.

In either case, you should read something about memory management.