Is there some system notification that I can subscribe to be notified when user switches ring/silent button? I would also like to know whether Apple provides some "system notifications list" or not. I've spent an hour searching this but failed.
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1[Look at this answer](http://stackoverflow.com/a/8036712/1263701) – Artem Shmatkov Mar 12 '13 at 13:35
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Your awnser is too old – Plot May 28 '13 at 09:00
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There is no way to find out that. Apple in response to some request has answered like this
We never have provided a method for detecting hardware mute switch and don't intend to do so.
In case you would try some work around I think Apple will reject your application, however you could request for the feature or report a bug to apple.

nsgulliver
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