區域監控iOS應用程序的限制

我正在開發一個應用程序，我需要將設備的位置更新到服務器大致準確，我可以承受500的差異|數據中有700米。區域監控iOS應用程序的限制

我成功地在背景和前景模式下實現它。我的主要擔心是應用程序終止時的位置更新，因爲我在應用程序終止時實施了重大位置更改，但它以隨機方式通知設備位置發生更改，並且非常不準確，或者位置更新中存在巨大延遲以2公里的距離接收位置更新，有時甚至不在7公里的距離。

所以我的一個團隊成員建議我在app終止時實現區域監視，現在我已經實現了區域監視，但它也不能正常工作，並且我已經閱讀了某處最多隻能有20個可以監視的區域從一個應用程序。

這裏是下面的示例代碼，我想：

import UIKit 
import CoreLocation 
import XCGLogger 
//import SwiftLocation 

// MARK: - AppDelegate 

@UIApplicationMain 
class AppDelegate: UIResponder, UIApplicationDelegate, CLLocationManagerDelegate 
{ 
    var window: UIWindow? 
    var locationManager: CLLocationManager! 
    var currentLocation: CLLocationCoordinate2D? 

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

    if launchOptions != nil 
    { 
     if (launchOptions![UIApplicationLaunchOptionsLocationKey] != nil) 
     { 

     if let location = locationManager.location?.coordinate { 
      startRegionMonitoring(location) 

     } 
     } 
    } 

    setupLocalNotifications() 
    setupLocationManager() 
    return true 
    } 

    func setupLocationManager() 
    { 
    if (locationManager == nil) 
    { 
     locationManager = CLLocationManager() 
     locationManager.delegate = self 
     locationManager.pausesLocationUpdatesAutomatically = false 
     locationManager.distanceFilter = CLLocationDistance(100.0) 
     locationManager.desiredAccuracy = kCLLocationAccuracyBest 
     locationManager.requestAlwaysAuthorization() 

     if #available(iOS 9.0, *) { 
     locationManager.allowsBackgroundLocationUpdates = true 
     } 
    } 
    } 

    func applicationWillTerminate(application: UIApplication) 
    { 
    if currentLocation == nil 
    { 

     return 
    } 

    // create a region around current location and monitor enter/exit 
    startRegionMonitoring(currentLocation!) 
    } 

    func startRegionMonitoring(location: CLLocationCoordinate2D) 
    { 
    let region = CLCircularRegion(center: location, radius: 100.0, identifier: "manish") 
    region.notifyOnExit = true 
    region.notifyOnEntry = true 
    locationManager.startMonitoringForRegion(region) 

    } 

    // MARK: - Local notifications 

    func setupLocalNotifications() 
    { 
    let settings = UIUserNotificationSettings(forTypes: [.Alert, .Badge, .Sound], categories: nil) 
    UIApplication.sharedApplication().registerUserNotificationSettings(settings) 
    } 

    func showLocalNotification(message: String) 
    { 

    let localNotification = UILocalNotification() 
    localNotification.alertBody = message; 
    localNotification.fireDate = NSDate(timeIntervalSinceNow: 1.0) 
    UIApplication.sharedApplication().scheduleLocalNotification(localNotification) 

    } 
} 

extension AppDelegate 
{ 
    func locationManager(manager: CLLocationManager, didChangeAuthorizationStatus status: CLAuthorizationStatus) 
    { 
    if status == .AuthorizedAlways { 
     locationManager.startUpdatingLocation() 
    } 
    } 

    func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) 
    { 
    currentLocation = locations.first?.coordinate 
    showLocalNotification("didUpdateLocations: \(currentLocation)") 
    } 

    func locationManager(manager: CLLocationManager, didEnterRegion region: CLRegion) 
    { 
    showLocalNotification("Entered region: \(region.identifier)") 

    } 

    func locationManager(manager: CLLocationManager, didExitRegion region: CLRegion) 
    { 
    showLocalNotification("Exited region: \(region.identifier)") 
    if let location = manager.location?.coordinate { 
     startRegionMonitoring(location) 
    } 
    } 

}

如何更新位置，即使應用程序被終止？在我上面的代碼中有什麼不對？

來源

2016-09-19 Manish Pathak