Question

我已经在后台模式功能下启用了位置服务，如果单击主页按钮，一切正常，我会得到更新。我甚至在使用safari时获得更新，直到我去Facebook或其他什么，它只是停止。该应用程序没有崩溃或任何东西，它不会消耗太多的内存，也不会消耗大量的电力。我的应用程序有一个NSTimer，每隔30秒才需要该位置。

App Delegate：

import UIKit
import CoreLocation

    @UIApplicationMain
    class AppDelegate: UIResponder, UIApplicationDelegate, CLLocationManagerDelegate {

        var window: UIWindow?
        var manager = CLLocationManager()

        func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
            manager.desiredAccuracy = kCLLocationAccuracyThreeKilometers
            manager.delegate = self
            manager.requestAlwaysAuthorization()
            manager.startUpdatingLocation()
            return true
        }

主视图控制器：

import UIKit
import CoreLocation

class MainViewController: UIViewController, SettingsViewDelegate {

    @IBOutlet weak var pageMenuView: UIView!
    var audioPlayer = AVAudioPlayer()
    var lastTimestamp: NSDate!
    var timer : NSTimer?

    lazy var locationManager: CLLocationManager = {
        var _locationManager = CLLocationManager()
        _locationManager.delegate = self
        _locationManager.desiredAccuracy = kCLLocationAccuracyThreeKilometers

        // Movement threshold for new events
        return _locationManager
    }()

       override func viewDidLoad() {
        super.viewDidLoad()

         self.timer = NSTimer.scheduledTimerWithTimeInterval(30, target: self, selector: #selector(MainViewController.startLocationUpdates), userInfo: nil, repeats: true)

    }

    func startLocationUpdates() {
        // Here, the location manager will be lazily instantiated
        locationManager.startUpdatingLocation()
    }

}

// MARK: - CLLocationManagerDelegate
extension MainViewController: CLLocationManagerDelegate {
    func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {

        print("location \(reminderTime)")
        self.locationManager.stopUpdatingLocation()

    }
}

更新此问题发生在物理设备上，iphone 5c

当我使用safari或其他应用程序时，后台模式中的IOS位置更新会停止

0 个答案: