Programmatically check state of do not disturb on OS X

Question

Using Objective-C, how can I programmatically check the state of the system \"Do Not Disturb\" setting on OS X? I\'m fine with using hacks or private APIs since I don\'t need to

Answer 1

You can (and should) simply use UserDefaults:

let theDefaults = UserDefaults(suiteName: "com.apple.notificationcenterui")
print(theDefaults?.bool(forKey: "doNotDisturb"))

For time-controlled switching you should check if the minute of the day lies between dndStart and dndEnd:

let theDefaults = UserDefaults(suiteName: "com.apple.notificationcenterui")
let theDate = Date()
let theCalendar = Calendar.current

let theHour = calendar.component(.hour, from: theDate)
let theMinute = calendar.component(.minute, from: theDate)
let theMinuteOfDay = Double(theHour * 60 + theMinute)

if theMinuteOfDay >= theDefaults.double(forKey: "dndStart") && 
    theMinuteOfDay <= theDefaults.double(forKey: "dndEnd") {
    // ...
}