是否可以隐藏NFC阅读会话的iOS系统警报 [英] Is it possible to hide iOS system alert for NFC reading session

问题描述

成功完成NFC阅读会话后，您会看到类似的内容:

When you successfully finish an NFC reading session you'll see something like that:

这将覆盖当前显示的ViewController大约3秒钟.有趣的是，这种行为是不一致的，因为如果阅读会话完成得非常快，此窗口将立即消失.

This will overlay the currently presented ViewController for about 3 seconds. The fun part is that this behaviour is inconsistent since this window will disappear immediately if the reading session finish very fast.

这意味着我不能确定此覆盖层将保留多长时间，以确保对我们的应用的UX设计不利.

It means that I cannot be sure about how long will this overlay stay for sure which is bad for our app's UX design.

问题很简单:是否有一种方法可以强制此叠加消失或至少处理消失的事件(不是完成NFC会话时的事件)?

The question is simple: is there a way to force this overlay to disappear or at least to handle the event of when it disappears (not when the NFC session if finished)?

推荐答案

我发现了一种有趣的隐藏窗口的方法.需要两个简单的步骤:

I've found an interesting way to hide that window. 2 simple steps are required:

1)初始化阅读器会话时，将最后一个参数设置为false:NFCNDEFReaderSession(delegate: self, queue: nil, invalidateAfterFirstRead: false)

1) When initialising your reader session set the last parameter to false: NFCNDEFReaderSession(delegate: self, queue: nil, invalidateAfterFirstRead: false)

2)在readerSession(_ session: NFCNDEFReaderSession, didDetectNDEFs messages: [NFCNDEFMessage])的正文中，您应该调用session.invalidate().

2) In the body of readerSession(_ session: NFCNDEFReaderSession, didDetectNDEFs messages: [NFCNDEFMessage]) your should call session.invalidate().

就是这样.就像您点按取消/完成"一样-系统窗口将立即消失.

That's it. It will work as if you tapped Cancel/Done - the system window will disappear immediately.

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