iphone - 动画 block 相互干扰

Question

我基本上是在运行两个动画，一个接一个，它们似乎相互干扰或以某种方式干扰 UIView。我的代码在 5.0 模拟器上运行良好，但在 4.3 模拟器上有问题。

基本上我在屏幕上有一堆图像。当对象被触摸时，它会按比例放大:

[UIView animateWithDuration:0.1f
                          delay:0.0f
                        options:UIViewAnimationOptionCurveEaseIn
                     animations:^(void) {
                         //resizing the frame to make it bigger (original size is the new bigger size)
                         self.frame = CGRectMake(point.x - originalSize.width/2, point.y - originalSize.height/2 , originalSize.width, originalSize.height);

                     }
                     completion:^(BOOL complete){
                         //I have a showArrow method that draws an arrow to the superview to show the user where to place their image
                         [self performSelector:@selector(showArrow) withObject:nil afterDelay:1];
                     }];

一旦该 block 完成，它就会运行 showArrow，它只显示一个弹跳箭头:

[UIView animateWithDuration:0.5f
                          delay:0.0f
                        options:UIViewAnimationOptionAutoreverse | UIViewAnimationOptionRepeat
                     animations:^(void) {
                         self.arrow.frame = CGRectMake(arrowOrigin.origin.x, arrowOrigin.origin.y - 200, arrow.frame.size.width, arrow.frame.size.height);
                         self.arrow.alpha = 0.5;
                     }
                     completion:NULL];

所以正如我提到的，这在我的 iPad 和 5.0 模拟器上完美运行，但在 4.3 中，一旦第一个动画运行，它似乎卡住了图像的平移手势或被触摸的能力。关于这是怎么回事有什么想法吗？谢谢

Answer 1

尝试将 UIViewAnimationOptionAllowUserInteraction 掩码添加到选项参数

[UIView animateWithDuration:0.1f
                      delay:0.0f
                    options:UIViewAnimationOptionCurveEaseIn |
                            UIViewAnimationOptionAllowUserInteraction
                 animations:^(void) {
                 // ...

在 showArrow 中:

[UIView animateWithDuration:0.5f
                      delay:0.0f
                    options:UIViewAnimationOptionAutoreverse |
                            UIViewAnimationOptionRepeat |
                            UIViewAnimationOptionAllowUserInteraction
                 animations:^(void) {
                 // ...