BLE background processing not working in iOS application

Question

I have an application that needs to interact with peripherals when the app enters a suspended or terminated state. I've added the bluetooth-central to the Info.plist and Capabilities ( image ) but after i connect to a peripheral it doesn't fire any of the delegate methods while running in the background, but as soon as the app enters the foreground the delegate methods are called! I've also set up CBCenteralManager state restoration

manager = CBCentralManager(delegate: self, queue: nil, options: [CBCentralManagerOptionRestoreIdentifierKey: CoreBluetoothRestorationKey])

let ids = [CBUUID(string: ServiceUUID)]
manager.scanForPeripheralsWithServices(ids, options: nil)

manager.connectPeripheral(peripheral, options: nil)

I've been digging around the internet for hours and haven't found anything. Has anyone had a similar situation before? Any tips? Thanks!

edit: code in context:

class AppDelegate: UIResponder, UIApplicationDelegate {

 var window: UIWindow?

 let bluetoothManager = CoreBluetoothObserver()

 func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {

 return true
}
}

class CoreBluetoothObserver: NSObject {

  let manager: CBCentralManager

  override init() {
   manager = CBCentralManager(delegate: nil, queue: nil, options: [CBCentralManagerOptionRestoreIdentifierKey: CoreBluetoothRestorationKey])
   super.init()
   manager.delegate = self
 }
}

the CoreBlueToothObserver() initializes CBCenteralManager in its init method and sets self to its delegate. I would assume CoreBlueToothObserver() would be around for the lifetime of the app and not need to be re-initalized in didFinishLaunchingWithOptions ? or maybe i need to recreate a CBCenteralManager and inject it in didFinishLaunchingWithOptions ? Just stumped as to whats happening.

Answer 1

With the help from @Paulw11 this worked

class AppDelegate: UIResponder, UIApplicationDelegate {

 var window: UIWindow?

 var bluetoothManager: CoreBluetoothObserver!

 func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {

  bluetoothManager = CoreBluetoothObserver()
  return true
 }
}

app is now receiving the delegate methods!