我是新手，并且四处走动，试图弄明白。我知道如果我不得不猜测但需要一些帮助，我会感到很复杂。
我正在尝试使用iBeacon从信标中读取UUID，Major和Minor值，然后使用它来驱动视图控制器中的图像。
在AppDelegate.swift文件中，我可以获取信息并使用println将其删除。 AppDelegate文件如下：
import UIKit
import CoreLocation
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
var locationManager: CLLocationManager?
var lastProximity: CLProximity?
var lastUUID: NSUUID!
var lastBeacanIdentifier:String = ""
var lastMajorValue: NSNumber = 0.0
var lastMinorValue: NSNumber = 0.0
func application(application: UIApplication,
didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {
let uuidString = "99C2E498-7606-4575-A353-5F710834E75B"
let beaconIdentifier = "co.Company"
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()
if(application.respondsToSelector("registerUserNotificationSettings:")) {
application.registerUserNotificationSettings(
UIUserNotificationSettings(
forTypes: UIUserNotificationType.Alert | UIUserNotificationType.Sound,
categories: nil
)
)
}
return true
}
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
// Override point for customization after application launch.
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
if(nearestBeacon.proximity == lastProximity ||
nearestBeacon.proximity == CLProximity.Unknown) {
return;
}
lastProximity = nearestBeacon.proximity;
lastMajorValue = nearestBeacon.major;
lastMinorValue = nearestBeacon.minor;
lastUUID = nearestBeacon.proximityUUID;
switch nearestBeacon.proximity {
case CLProximity.Far:
message = "You are far away from the beacon";
println(lastMajorValue)
println(lastMinorValue)
println(lastUUID)
case CLProximity.Near:
message = "You are near the beacon";
println(lastMajorValue)
println(lastMinorValue)
println(lastUUID)
case CLProximity.Immediate:
message = "You are in the immediate proximity of the beacon";
println(lastMajorValue)
println(lastMinorValue)
println(lastUUID)
case CLProximity.Unknown:
return
}
} else {
message = "No beacons are nearby"
}
NSLog("%@", message)
sendLocalNotificationWithMessage(message)
}
func locationManager(manager: CLLocationManager!,
didEnterRegion region: CLRegion!) {
manager.startRangingBeaconsInRegion(region as CLBeaconRegion)
manager.startUpdatingLocation()
NSLog("You entered the region")
sendLocalNotificationWithMessage("You entered the region")
}
func locationManager(manager: CLLocationManager!,
didExitRegion region: CLRegion!) {
manager.stopRangingBeaconsInRegion(region as CLBeaconRegion)
manager.stopUpdatingLocation()
NSLog("You exited the region")
sendLocalNotificationWithMessage("You exited the region")
}
}
View Controller文件如下：
import Foundation
import UIKit
import CoreLocation
class ViewController: UIViewController{
@IBOutlet weak var advertismentImageArea: UIImageView!
@IBAction func closeAdvertisementButton(sender: UIButton) {
advertismentImageArea.hidden = true
}
var beaconInformation: AppDelegate!
override func viewDidLoad() {
super.viewDidLoad()
var closestBeacon = beaconInformation
var majorNumber = closestBeacon.lastMajorValue
if majorNumber == 6303 {
advertismentImageArea.image = UIImage(named: "AdOne")
} else if majorNumber == 21456 {
advertismentImageArea.image = UIImage(named: "AdTwo")
} else {
return advertismentImageArea.hidden = true;
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
我非常感谢大家提供的任何帮助。
答案 0 :(得分：0)
一种可能的解决方案是使用iOS委派模式。这不是解决这个问题的唯一方法。
您要做的是在AppDelegate类中创建协议
@protocol BeaconLocationDelegate
{
func majorBeaconChanged(majorValue:NSNumber)
}
然后，您还可以将以下变量添加到AppDelegate类
weak var locationDelegate: BeaconLocationDelegate?
在ViewController类中，您将声明您的类实现了BeaconLocationDelegate协议
class ViewController: UIViewController, BeaconLocationDelegate
然后在viewDidload中的某处添加以下代码行
UIApplication.sharedApplication().delegate?.locationDelegate = self
然后实现协议方法来更新您想要的应用程序用户界面
func majorBeaconChanged(majorValue:NSNumber)
最后，在AppDelegate类中，只要您检测到信标中的更改，您就会调用以下代码：
locationDelegate?.majorBeaconChanged(newMajorValue)