Blinking effect on UILabel

Question

I have a UILabel with background color as grey.

I want a blinking effect on this label like it should become a little white & then become gray and it should keep

Answer 1

    int count;
    NSTimer *timer;

      timer= [NSTimer
                  scheduledTimerWithTimeInterval:(NSTimeInterval)(0.5)
                  target:self
                  selector:@selector(animationStart)
                  userInfo:nil
                  repeats:TRUE];

-(void)animationStart{
switch (count) {
    case 0:
        //205   198 115
        count++;
        lbl.textColor=[UIColor colorWithRed:205.0f/255.0f green:198.0f/255.0f blue:115.0f/255.0f alpha:1];

        break;
    case 1:
         count++;
        //205   198 115 56  142 142
        lbl.textColor=[UIColor colorWithRed:56.0f/255.0f green:142.0f/255.0f blue:142.0f/255.0f alpha:1];

        break;
    case 2:
         count++;
        //205   198 115
        lbl.textColor=[UIColor colorWithRed:205.0f/255.0f green:205.0f/255.0f blue:0.0f/255.0f alpha:1];

        break;
    case 3:
         count++;
        //205   198 115 84  255 159
        lbl.textColor=[UIColor colorWithRed:84.0f/255.0f green:255.0f/255.0f blue:159.0f/255.0f alpha:1];

        break;
    case 4:
         count++;
        //205   198 115 255 193 37
        lbl.textColor=[UIColor colorWithRed:255.0f/255.0f green:193.0f/255.0f blue:37.0f/255.0f alpha:1];

        break;
    case 5:
         count++;
        //205   198 115 205 200 177
        lbl.textColor=[UIColor colorWithRed:205.0f/255.0f green:200.0f/255.0f blue:117.0f/255.0f alpha:1];

        break;
    case 6:
         count++;
        //205   198 115 255 228 181
        lbl.textColor=[UIColor colorWithRed:255.0f/255.0f green:228.0f/255.0f blue:181.0f/255.0f alpha:1];

        break;
    case 7:
         count++;
        //205   198 115 233 150 122
        lbl.textColor=[UIColor colorWithRed:233.0f/255.0f green:150.0f/255.0f blue:122.0f/255.0f alpha:1];

        break;
    case 8:
        count++;
        //205   198 115 233 150 122
        lbl.textColor=[UIColor colorWithRed:255.0f/255.0f green:200.0f/255.0f blue:200.0f/255.0f alpha:1];

        break;
    case 9:
         count=0;
        //205   198 115 255 99  71 255  48  48
        lbl.textColor=[UIColor colorWithRed:255.0f/255.0f green:48.0f/255.0f blue:48.0f/255.0f alpha:1];

        break;

    default:
        break;
}

}

Answer 2

You can do this within a block:

self.yourLabel.alpha = 1;
[UIView animateWithDuration:1.5 delay:0.5 options:UIViewAnimationOptionRepeat | UIViewAnimationOptionAutoreverse animations:^{
        self.yourLabel.alpha = 0;
} completion:nil];

So you dont need a second method.