Ios 链接动画：第一个是即时动画

以下功能应为A.使视图变大B.等待5秒，C.再次缩小视图。问题是，一个错误不是在两秒钟内发生的，而是在瞬间发生的

- (void) showAndHide {
CGRect r = self.frame;
float right = r.origin.x + r.size.width, h = r.size.height, y = r.origin.y;

[UIView animateWithDuration:2
                      delay:0
                    options:UIViewAnimationOptionCurveEaseInOut|UIViewAnimationOptionAllowUserInteraction
                 animations:^{
                     self.frame = CGRectMake(right - 400, y, 400, h);
                     [UIView animateWithDuration:2
                                           delay:5
                                         options: UIViewAnimationOptionOverrideInheritedCurve |
                      UIViewAnimationOptionCurveLinear |
                      UIViewAnimationOptionOverrideInheritedDuration
                                      animations:^{
                                          self.frame = CGRectMake(right - 40, y, 40, h);
                                      }
                                      completion:nil];

                 }
                 completion:nil];

}

---

这可能是什么原因造成的？提前谢谢

将第二个动画放入第一个动画的完成处理程序中：

- (void) showAndHide {
CGRect r = self.frame;
float right = r.origin.x + r.size.width, h = r.size.height, y = r.origin.y;

[UIView animateWithDuration:2
                      delay:0
                    options:UIViewAnimationOptionCurveEaseInOut|UIViewAnimationOptionAllowUserInteraction
                 animations:^{
                     self.frame = CGRectMake(right - 400, y, 400, h);
                 }
                 completion:^{
                 [UIView animateWithDuration:2
                                       delay:5
                                     options: UIViewAnimationOptionOverrideInheritedCurve | UIViewAnimationOptionCurveLinear | UIViewAnimationOptionOverrideInheritedDuration
                                      animations:^{
                                          self.frame = CGRectMake(right - 40, y, 40, h);
                                      }
                                      completion:NULL];
                 }];
}

您的方法的问题是，两个动画同时排队。如果您想继续使用代码，我认为在第二个动画的选项中添加

UIViewAnimationOptionBeginFromCurrentState

也可以解决您的问题。不过我不太确定