Question

这是完整的错误消息：

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

这是我的应用代表

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func locationManager

开头的行上

我认为这意味着CLLocationManager委托已经有一个名为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，这种错误的大多数解决方案都包括对Swift的不同版本中的swift声明的更改。关于如何摆脱这个的任何建议？并解释为什么会发生这种情况？

Answer 1

我不太了解swift，为什么要修复它（也许有人可以详细说明，但是在上面的代码中使用这个而不是什么来修复它：

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

当我说修复它时，我的意思是它现在编译。我没有用真正的灯塔成功尝试过它。

另外，我直接从这个doc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：

＆＃39;的LocationManager（_：didRangeBeacons：inRegion：）＆＃39;与可选的需求方法冲突＆＃39; locationManager（_：didRangeBeacons：inRegion :)＆＃39;在协议中

1 个答案: