Question

I have the following code to animate a badge if a certain condition is met. It works fine, except when it is called immediately after the ViewController is re-loaded after a look-up (in another VC)

if ((-MY CONDITION HERE-) {
        NSLog(@"am going to animate!");

      [UIView animateWithDuration:1.0
                            delay:0
                          options:(UIViewAnimationOptionAutoreverse|UIViewAnimationOptionRepeat)
                       animations:^{
                                  selectedInfoButton.alpha = 0.4;
                                 }
                       completion:nil];
   }

I can see that the method is called when the VC is re-loaded, but the animation is ‘frozen’ in the same state as when the look-up is called. What could be going wrong?

Answer 1

Possibility:

• One time works in viewController

  the code is called in viewDidLoad
  method .Then add it in viewWillAppear

• Check the condition is satisfied,(that is the code hits in the block ) the second time the ViewController reappers