无限循环动画

Question

我有 5 个不同的动画，它们会依次动画然后消失。有没有办法将它们置于无限循环中，以便动画 #1 开始和结束，然后动画 #2 开始和结束等等……？然后整个过程将无限循环地重复。

我将动画放在单独的延迟块中。我猜想有更好的方法来做到这一点。这就是我现在所拥有的：

-(void) firstAnimation {

        [UIView beginAnimations:@"Fade Out Image" context:nil];
        [UIView setAnimationDelegate:self];
        [UIView setAnimationDelay:40];
        [UIView setAnimationRepeatCount:30];
        [UIView setAnimationRepeatAutoreverses:YES]; 
        [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
        theImage.alpha = 1;
        theImage.alpha = 0.1;

        [UIView commitAnimations];

        [self secondAnimation];

}

-(void) secondAnimation {

        tapImage2.hidden = NO;

        [UIView beginAnimations:@"Fade Out Image" context:nil];
        [UIView setAnimationDelegate:self];
        [UIView setAnimationDelay:53];
        [UIView setAnimationRepeatCount:29];
        [UIView setAnimationRepeatAutoreverses:YES];
        [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
        theImage2.alpha = 1;
        theImage2.alpha = 0.1;      

        [UIView commitAnimations];

    [self thirdAnimation];

}

这会持续 5 个动画。感谢您的帮助。

Answer 1

设置动画委托并创建动画完成方法，而不是使用延迟。我注意到您已经设置了委托。

[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:@selector(animationFinished:finished:context:)];

- (void)animationFinished:(NSString *)animationID finished:(BOOL)finished context:(void *)context {
    //Start next animation based on the animationID of the last one...
}