Under the Bridge

Tip: Animating UIButton

File this one under “obvious once you think of it”: if you want to have a UIButton with some kind of animation effect, but that seems complicated since a UIButton can only have a single image specified; well then as described here, just create an animatable UIImageView,

NSArray *images = [NSArray arrayWithObjects:

   [UIImage imageNamed:@"image0.png"],

   [UIImage imageNamed:@"image1.png"],


imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"image0.png"]];

imageView.animationImages = images;

then add it as a subview of a custom button!

UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];

button.bounds = self.imageView.bounds;



Which can then be made into a UIBarButtonItem if you like,

UIBarButtonItem *barButton = [[[UIBarButtonItem alloc] initWithCustomView: button] autorelease];

And then just call [imageView startAnimating] to get your pretty pulsating or whatever action going.

  • Jwesley

    First concern is the title says UIButton this is not a UIButton is a UIBarButtonItem which is very different.