ios - 关于 iOS 中的 UIActivityIndi​​catorView

假设有一个UIView作为容器，里面包含一个UIActivityIndi​​catorView和其他 subview 。当UIActivityIndi​​catorView动画时，它设置userInteractionEnabled 属性设置为 NO，这使得它的所有兄弟 View 都停止接收输入事件。

我查看了Apple的文档，它建议我们可以使用UIViewAnimationOptionAllowUserInteraction常量来解决这个问题。但我不知道在哪里或哪个属性设置这个常量。有没有人遇到过这个问题并解决是吗？

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Best Answer-推荐答案

UIViewAnimationOptionAllowUserInteraction 是使用 block 动画 View 的选项之一。允许用户在动画制作时与 View 进行交互。

enum {
   UIViewAnimationOptionLayoutSubviews            = 1 <<  0,
   UIViewAnimationOptionAllowUserInteraction      = 1 <<  1,
   UIViewAnimationOptionBeginFromCurrentState     = 1 <<  2,
   UIViewAnimationOptionRepeat                    = 1 <<  3,
   UIViewAnimationOptionAutoreverse               = 1 <<  4,
   UIViewAnimationOptionOverrideInheritedDuration = 1 <<  5,
   UIViewAnimationOptionOverrideInheritedCurve    = 1 <<  6,
   UIViewAnimationOptionAllowAnimatedContent      = 1 <<  7,
   UIViewAnimationOptionShowHideTransitionViews   = 1 <<  8,

   UIViewAnimationOptionCurveEaseInOut            = 0 << 16,
   UIViewAnimationOptionCurveEaseIn               = 1 << 16,
   UIViewAnimationOptionCurveEaseOut              = 2 << 16,
   UIViewAnimationOptionCurveLinear               = 3 << 16,

   UIViewAnimationOptionTransitionNone            = 0 << 20,
   UIViewAnimationOptionTransitionFlipFromLeft    = 1 << 20,
   UIViewAnimationOptionTransitionFlipFromRight   = 2 << 20,
   UIViewAnimationOptionTransitionCurlUp          = 3 << 20,
   UIViewAnimationOptionTransitionCurlDown        = 4 << 20,
   UIViewAnimationOptionTransitionCrossDissolve   = 5 << 20,
   UIViewAnimationOptionTransitionFlipFromTop     = 6 << 20,
   UIViewAnimationOptionTransitionFlipFromBottom  = 7 << 20,
};
typedef NSUInteger UIViewAnimationOptions;

但我不知道它对您使用 UIActivityIndi​​catorView 有何帮助。简单例子:

[UIView animateWithDuration:0.4f 
                      delay:0.2f 
                    options:UIViewAnimationOptionAllowUserInteraction | UIViewAnimationOptionCurveEaseInOut
                 animations:^{
                     [myView setFrame:CGRectOffset(view.frame, 0, -100)];
                 }
                 completion:^(BOOL finished){ 
                         NSLog(@"completed");
                     }
 ];

关于ios - 关于 iOS 中的 UIActivityIndi​​catorView，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/7912436/