iphone - UIView动画didEndSelector : method not getting called?

Question

我有一个已移入 View 的 UIView。 2 秒后，我想再次将 UIView 移出 View 。我该怎么做呢？我已经尝试过以下方法，但它不起作用:(

我已经设置了 NSLog，但看起来还没有完成，然后调用 loadingViewDisappear: 方法:(

谢谢。

...
    [UIView beginAnimations:@"AnimateIn" context:nil];
    [UIView setAnimationCurve: UIViewAnimationCurveEaseOut];
    [UIView setAnimationDuration: 0.7f];
    [UIView setAnimationDidStopSelector:@selector(loadingViewDisappear:finished:context:)];
    loadingView.frame = CGRectMake(rect.origin.x, rect.origin.y - 80, rect.size.width, rect.size.height);
    [UIView commitAnimations];
}

- (void)loadingViewDisappear:(NSString *)animationID finished:(NSNumber *) finished context:(void *) context {
    NSLog( (finished ? @"YES!" : @"NO!" ) );
    if ([animationID isEqualToString:@"AnimateIn"] && finished) {
        [UIView beginAnimations:@"AnimateOut" context:nil];
        [UIView setAnimationCurve: UIViewAnimationCurveEaseIn];
        [UIView setAnimationDelay:2.0f];
        [UIView setAnimationDuration: 0.7f];
        loadingView.frame = CGRectMake(0, 480, 320, 80);
        [UIView commitAnimations];
        [loadingView removeFromSuperview];
    }
}

Answer 1

您需要设置动画委托(delegate):

[UIView beginAnimations:@"AnimateIn" context:nil];
[UIView setAnimationCurve: UIViewAnimationCurveEaseOut];
[UIView setAnimationDuration: 0.7f];

//Add this
[UIView setAnimationDelegate:self];

[UIView setAnimationDidStopSelector:@selector(loadingViewDisappear:finished:context:)];
loadingView.frame = CGRectMake(rect.origin.x, rect.origin.y - 80, rect.size.width, rect.size.height);
[UIView commitAnimations];