如何在应用程序中检测DND模式？
我正在构建医疗诊断应用程序。当患者（或医生）在使用过程中发生中断时，会中断应用程序的用途并浪费大量时间。
I'm building a medical diagnostic app. Interruptions while a patient (or doctor) is in the midst of using it would disrupt the purpose of the app and waste a lot of time.
我想知道如何在应用程序中检测请勿打扰模式是否已打开/关闭。 （最好知道Air Plane Mode是否处于开/关状态。）这样，我可以提醒用户进入设置以将其打开。
I would like to know how I can detect within an app whether Do Not Disturb mode is switched on/off. (It would also be good to know whether Air Plane Mode is on/off.) That way I could remind the user to go into Settings to turn it on.
甚至更好（更文明）：有什么方法可以允许用户从应用程序内的中打开DND模式？ （就像用户可以使用 MPVolumeView 。）
Even better (much more civilized): is there any way I could allow the user to turn on DND mode from within the app? (Rather like the user can normalize the device volume within an app using MPVolumeView.)
最接近的我已经找到的答案指向此页面，其中带有特殊的 URL以启用飞机模式。但是它仅适用于iOS 5 。
The closest answer I've yet found directs to this page on turning on Air Plane mode with a special 'URL.' But it only works in iOS 5.
没有关于请勿打扰甚至飞机模式的公共API。甚至不知道状态。
There's no public API about Do Not Disturb or even Airplane mode. Not even to know the status.
关于飞行模式，您可以检查网络状态（使用可达性），但是它不是100％准确的。
About Airplane mode, you could check the network status (using Reachability), but it wouldn't be 100% accurate.
Reachability是苹果公司的代码示例，但是在GitHub上有一些基于它的库。
Reachability is a code sample from Apple, but there are several libraries based on it on GitHub.