userInteractionEnabled

最新推荐文章于 2022-10-27 10:58:31 发布

kongu

最新推荐文章于 2022-10-27 10:58:31 发布

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分类专栏： iOS 文章标签： iOS ImageView userInteraction

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本文深入探讨了iOS开发中使用userInteractionEnabled属性来管理视图的用户交互行为。通过设置为FALSE，开发者可以有效控制哪些事件会被忽略，从而优化用户体验和应用性能。

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常见 userInteractionEnabled = FALSE 的有 UIImageView 和 UILabel.

userInteractionEnabled = FALSE 代表控件忽略用户的事件,并把事件从队列中移除.

关于 userInteractionEnabled 的官方介绍

A Boolean value that determines whether user events are ignored and removed from the event queue.

Declaration

OBJECTIVE-C

@property(nonatomic, getter=isUserInteractionEnabled) BOOL userInteractionEnabled

Discussion

When set to NO, user events—such as touch and keyboard—intended for the view are ignored and removed from the event queue. When set to YES, events are delivered to the view normally. The default value of this property is YES.

During an animation, user interactions are temporarily disabled for all views involved in the animation, regardless of the value in this property. You can disable this behavior by specifying theUIViewAnimationOptionAllowUserInteraction option when configuring the animation.

NOTE

Some UIKit subclasses override this property and return a different default value. See the documentation for that class to determine if it returns a different value.