How to Receive Darwin Notifications when app is in background

Question

App is configured to receive location updates while in the background so as to keep the app active and the updates are being received successfully when app is in the background.

Darwin notifications have also been configured and are received only when the app is the current app in the foreground. As soon as the app is put in the background it stops receiving the Darwin Notifications.

Any thoughts on how to receive the Darwin Notifications while the app is in the background?

Code snippets below.

Building App in Swift2

in appdeligate

    let callback: @convention(c)
    (CFNotificationCenter!, UnsafeMutablePointer<Void>, CFString!, UnsafePointer<Void>,        CFDictionary!) -> Void = {
        (center, observer, name, object, userInfo) in

    //Execute callback code

    }


    let exCb: CFNotificationCallback = unsafeBitCast(callback, CFNotificationCallback.self)

CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(),nil ,exCb,"com.apple.springboard.hasBlankedScreen" as CFString,nil ,CFNotificationSuspensionBehavior.DeliverImmediately)

in viewcontroller

    locationManager = CLLocationManager()
    locationManager.delegate = self
    locationManager.desiredAccuracy = kCLLocationAccuracyBest
    //locationManager.requestWhenInUseAuthorization()
    locationManager.requestAlwaysAuthorization()
    locationManager.startUpdatingLocation()

have you tried enabling background mode `Location updates` and check whether delegate method `locationManager:didUpdateLocations:` is called — Sunil Sharma, Aug 24 '16 at 06:34
@Rich16 did you ever get this working? And if so, is it still working on iOS 10? — simonthumper, Jun 19 '17 at 13:08

score 0 · Answer 1 · answered Aug 23 '16 at 15:52

0

Make sure you've activated the Location updates capability in Background Modes.

This will allow your app to receive location changes in the background and proceed with your logic. A great library for this kind of functionality is INTULocationManager.

answered Aug 23 '16 at 15:52

Alexis C.

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How to Receive Darwin Notifications when app is in background

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