Created
May 27, 2015 11:18
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A Simple Beacon Manager which starts/stops ranging when a beacon region transition happens.
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| import Foundation | |
| import CoreLocation | |
| let beaconManagerDidEnterRegionsNotification = "beaconManagerDidEnterRegionsNotification" | |
| let beaconManagerDidExitRegionsNotification = "beaconManagerDidExitRegionsNotification" | |
| let beaconManagerUserInfoEnteredRegionsKey = "enteredRegions" | |
| let beaconManagerUserInfoExitedRegionsKey = "exitedRegions" | |
| class BeaconManager: NSObject, CLLocationManagerDelegate { | |
| private var manager = CLLocationManager() | |
| private(set) var currentRegions = Set<CLBeaconRegion>() | |
| var uuids = [NSUUID?]() | |
| override init() { | |
| super.init() | |
| manager.delegate = self | |
| } | |
| func startMonitoring() { | |
| if manager.respondsToSelector("requestAlwaysAuthorization") { | |
| manager.requestAlwaysAuthorization() | |
| } | |
| for uuid in uuids { | |
| if let uuid = uuid { | |
| let region = CLBeaconRegion(proximityUUID: uuid, identifier: uuid.UUIDString) | |
| manager.startMonitoringForRegion(region) | |
| } | |
| } | |
| } | |
| // MARK: CLLocationManagerDelegate | |
| func locationManager(manager: CLLocationManager!, didDetermineState state: CLRegionState, forRegion region: CLRegion!) { | |
| if let region = region as? CLBeaconRegion { | |
| switch state { | |
| case .Inside: | |
| manager.startRangingBeaconsInRegion(region) | |
| case .Outside: | |
| // Let it do ranging for a sec to update currentRegions | |
| delay(1.0) { | |
| manager.stopRangingBeaconsInRegion(region) | |
| } | |
| case .Unknown: | |
| break | |
| } | |
| } | |
| } | |
| func locationManager(manager: CLLocationManager!, didRangeBeacons beacons: [AnyObject]!, inRegion region: CLBeaconRegion!) { | |
| var latestRegions = Set<CLBeaconRegion>() | |
| // Create CLBeaconRegions from CLBeacons | |
| if let beacons = beacons as? [CLBeacon] { | |
| for beacon in beacons { | |
| latestRegions.insert(regionFromBeacon(beacon)) | |
| } | |
| } | |
| let enteredRegions = latestRegions.subtract(currentRegions) | |
| let exitedRegions = currentRegions.subtract(latestRegions) | |
| currentRegions = latestRegions | |
| if enteredRegions.count > 0 { | |
| NSNotificationCenter.defaultCenter().postNotificationName(beaconManagerDidEnterRegionsNotification, object: self, userInfo: [beaconManagerUserInfoEnteredRegionsKey: enteredRegions]) | |
| } | |
| if exitedRegions.count > 0 { | |
| NSNotificationCenter.defaultCenter().postNotificationName(beaconManagerDidExitRegionsNotification, object: self, userInfo: [beaconManagerUserInfoExitedRegionsKey: exitedRegions]) | |
| } | |
| } | |
| // MARK: () | |
| func regionFromBeacon(beacon: CLBeacon) -> CLBeaconRegion { | |
| let major = CLBeaconMajorValue(beacon.major.integerValue) | |
| let minor = CLBeaconMinorValue(beacon.minor.integerValue) | |
| let identifier = "\(beacon.proximityUUID.UUIDString).\(major).\(minor)" // Used for "is equal" check in Sets | |
| return CLBeaconRegion(proximityUUID: beacon.proximityUUID, major: major, minor: minor, identifier: identifier) | |
| } | |
| func delay(delay:Double, closure:()->()) { | |
| dispatch_after( | |
| dispatch_time( | |
| DISPATCH_TIME_NOW, | |
| Int64(delay * Double(NSEC_PER_SEC)) | |
| ), | |
| dispatch_get_main_queue(), closure) | |
| } | |
| } |
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