ios - '位置管理器(_ :didRangeBeacons:inRegion: )' conflicts with optional requirement method ' locationManager(_:didRangeBeacons:inRegion:)' in protocol

Question

这是完整的错误信息:

Objective-C method 'locationManager:didRangeBeacons:inRegion:' provided by method 'locationManager(_:didRangeBeacons:inRegion:)' conflicts with optional requirement method 'locationManager(_:didRangeBeacons:inRegion:)' in protocol 'CLLocationManagerDelegate'

这是我的应用委托(delegate)

import UIKit
import CoreLocation

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?
    var locationManager: CLLocationManager?

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        // Override point for customization after application launch.
        let uuidString = "EBEFD083-70A2-47C8-9837-E7B5634DF524"
        let beaconIdentifier = "iBeaconModules.us"
        let beaconUUID:NSUUID = NSUUID(UUIDString: uuidString)!
        let beaconRegion:CLBeaconRegion = CLBeaconRegion(proximityUUID: beaconUUID,
            identifier: beaconIdentifier)

        locationManager = CLLocationManager()
        if(locationManager!.respondsToSelector("requestAlwaysAuthorization")) {
            locationManager!.requestAlwaysAuthorization()
        }
        locationManager!.delegate = self
        locationManager!.pausesLocationUpdatesAutomatically = false

        locationManager!.startMonitoringForRegion(beaconRegion)
        locationManager!.startRangingBeaconsInRegion(beaconRegion)
        locationManager!.startUpdatingLocation()
        return true
    }

    func applicationWillResignActive(application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
    }

    func applicationDidEnterBackground(application: UIApplication) {
        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
    }

    func applicationWillEnterForeground(application: UIApplication) {
        // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
    }

    func applicationDidBecomeActive(application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    }

    func applicationWillTerminate(application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    }


}

extension AppDelegate: CLLocationManagerDelegate {
        func sendLocalNotificationWithMessage(message: String!) {
            let notification:UILocalNotification = UILocalNotification()
            notification.alertBody = message
            UIApplication.sharedApplication().scheduleLocalNotification(notification)
        }

        func locationManager(manager: CLLocationManager!,
            didRangeBeacons beacons: [AnyObject]!,
            inRegion region: CLBeaconRegion!) {
                NSLog("didRangeBeacons");
                var message:String = ""

                if(beacons.count > 0) {
                    let nearestBeacon:CLBeacon = beacons[0] as! CLBeacon


                    switch nearestBeacon.proximity {
                    case CLProximity.Far:
                        message = "You are far away from the beacon"
                    case CLProximity.Near:
                        message = "You are near the beacon"
                    case CLProximity.Immediate:
                        message = "You are in the immediate proximity of the beacon"
                    case CLProximity.Unknown:
                        return
                    }
                } else {
                    message = "No beacons are nearby"
                }

                NSLog("%@", message)
                sendLocalNotificationWithMessage(message)
        }
}

错误出现在以 func locationManager 开头的行上

我认为这意味着 CLLocationManager 委托(delegate)已经有一个名为 didRangeBeacons:inRegion 的方法，我不允许在我的扩展中覆盖它。但我是 swift 的新手，大多数针对此类错误的解决方案包括对不同版本的 Swift 中的 swift 声明进行更改。关于如何摆脱这个的任何建议？并解释为什么会这样？

Answer 1

我对 swift 的了解还不够多，无法说明为什么会修复它(也许有人可以详细说明，但使用它而不是上面代码中的内容来修复它:

func locationManager(manager: CLLocationManager,
            didRangeBeacons beacons: [CLBeacon],
            inRegion region: CLBeaconRegion)

当我说修复它时，我的意思是它现在可以编译。我还没有用真正的信标成功地尝试过。

另外，我直接从这个文档页面复制了这段代码:

https://developer.apple.com/library/prerelease/ios/documentation/CoreLocation/Reference/CLLocationManagerDelegate_Protocol/#//apple_ref/occ/intfm/CLLocationManagerDelegate/locationManager:didRangeBeacons:inRegion :