跟踪页面卷曲模式关闭时的时间(关闭) [英] Tracking when the page-curl modal closes(is dismissed)

问题描述

我有一个页面卷曲模式工作.但是我需要能够跟踪用户何时单击页面curl关闭页面，以便可以看到一些变量.有没有我可以听的事件或某些代表可以打来电话告诉我这个事件?

I have a page-curl modal working. But I need to be able to track when the user hits the page curl to close the page so I can see some vars. Is there an event I can listen for or some delegate where I will get a call to tell me of this event?

非常感谢 -代码

推荐答案

您会在这里看到很多建议，提倡使用performSelector:withObject:afterDelay:，并且在退出模态视图后稍作延迟即可采取行动，但是我认为可能会有更好的方法.

You'll see a lot of advice around here advocating the use of performSelector:withObject:afterDelay: with a small delay to take action after the dismissal of modal views, but I think there may be a better approach.

自己生成通知.如果您控制以模态形式显示的视图，请在其控制器中使用viewDidDisappear:方法生成我被解雇"通知，然后在主视图控制器(或其他位置)中进行订阅.取消模态视图后，页面取消卷曲动画完成后，将调用viewDidDisappear:.

Generate the notification yourself. If you control the view that's being presented modally, use the viewDidDisappear: method in its controller to generate an "I was dismissed" notification which you then subscribe to in your main view controller (or somewhere else). viewDidDisappear: is called after the page uncurl animation completes upon dismissal of the modal view.

在最坏的情况下，视图可能以模态或其他方式呈现，您可以在呈现视图控制器上保持状态，以确保通知实际上与模态视图关闭相对应.

In the worst case, where the view may be presented modally or otherwise, you can keep state on the presenting view controller to ensure that the notification actually corresponds to a modal view dismissal.

出于完整性考虑，页面去卷曲过渡开始时会生成viewWillDisappear:.

For completeness' sake, viewWillDisappear: is generated when the page decurl transition starts.

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