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"],

   nil];

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;

Button;

Button;

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.

Alex | June 30, 2010
  • Jwesley December 6, 2011 at 11:26 am
    First concern is the title says UIButton this is not a UIButton is a UIBarButtonItem which is very different.

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