Вот пример самого простого способа сделать анимацию с помощью всего нескольких кадров:
Объявите IBOutlet UIImageView *timerAnimation
и свяжите его с вашим UIIMageView в IB. Добавьте некоторое количество изображений к вашим ресурсам, например, как показано ниже. Затем загрузите изображения в массив - см. Код:
timerAnimation.animationImages = [NSArray arrayWithObjects:
[UIImage imageNamed:@"timer00.png"],
[UIImage imageNamed:@"timer01.png"],
[UIImage imageNamed:@"timer02.png"],
[UIImage imageNamed:@"timer03.png"],
[UIImage imageNamed:@"timer04.png"],
[UIImage imageNamed:@"timer05.png"],
[UIImage imageNamed:@"timer06.png"],
[UIImage imageNamed:@"timer07.png"],
[UIImage imageNamed:@"timer08.png"],
[UIImage imageNamed:@"timer09.png"],
[UIImage imageNamed:@"timer10.png"],
[UIImage imageNamed:@"timer11.png"],
[UIImage imageNamed:@"timer12.png"],
[UIImage imageNamed:@"timer13.png"],
[UIImage imageNamed:@"timer14.png"],
[UIImage imageNamed:@"timer15.png"],
[UIImage imageNamed:@"timer16.png"],
[UIImage imageNamed:@"timer17.png"],
[UIImage imageNamed:@"timer18.png"],
[UIImage imageNamed:@"timer19.png"],
[UIImage imageNamed:@"timer20.png"],
[UIImage imageNamed:@"timer21.png"],
[UIImage imageNamed:@"timer22.png"],
[UIImage imageNamed:@"timer23.png"],
[UIImage imageNamed:@"timer24.png"],
[UIImage imageNamed:@"timer25.png"],
[UIImage imageNamed:@"timer26.png"],
[UIImage imageNamed:@"timer27.png"],
[UIImage imageNamed:@"timer28.png"],
[UIImage imageNamed:@"timer29.png"],
[UIImage imageNamed:@"timer30.png"],
[UIImage imageNamed:@"timer31.png"],
[UIImage imageNamed:@"timer32.png"],
[UIImage imageNamed:@"timer33.png"],
[UIImage imageNamed:@"timer34.png"],
[UIImage imageNamed:@"timer35.png"],
// [UIImage imageNamed:@"timer36.png"], save last picture for "times up"
nil];
timerAnimation.animationDuration = 5.0;
timerAnimation.animationRepeatCount = 1;
[timerAnimation startAnimating];
Это будет запускать вашу анимацию, пока вы не позвоните [timerAnimation stopAnimating];