【发布时间】：2017-01-13 13:24:36
【问题描述】：
我的应用需要不断更新位置，即使应用被杀死或从后台删除。它在前台甚至后台模式下都可以正常工作。但在应用程序被杀死时无法正常工作。 我已经尝试了一些代码。
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
self.startLocationService()
if ((launchOptions?[UIApplicationLaunchOptionsLocationKey]) != nil) {
self.locationmanager = CLLocationManager()
self.startLocationService()
}
print("Location Updates started")
return true
}
func startLocationService()
{
self.locationmanager.requestWhenInUseAuthorization()
self.locationmanager.desiredAccuracy = kCLLocationAccuracyBest
self.locationmanager.allowsBackgroundLocationUpdates = true
self.locationmanager.requestAlwaysAuthorization()
self.locationmanager.delegate = self
if UIApplication.sharedApplication().backgroundRefreshStatus == .Available {
print("Background updates are available for the app.")
}
else if UIApplication.sharedApplication().backgroundRefreshStatus == .Denied {
print("The user explicitly disabled background behavior for this app or for the whole system.")
}
else if UIApplication.sharedApplication().backgroundRefreshStatus == .Restricted {
print("Background updates are unavailable and the user cannot enable them again. For example, this status can occur when parental controls are in effect for the current user.")
}
else
{
print("nothing")
}
self.locationmanager.startUpdatingLocation()
}
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.
// locationManager = CLLocationManager()
}
func applicationDidBecomeActive(application: UIApplication) {
self.startLocationService()
}
func applicationWillTerminate(application: UIApplication) {
self.locationmanager.startMonitoringSignificantLocationChanges()
}
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
print("did update locateion called-->..")
let location:CLLocation = locations[locations.count-1]
print(location.coordinate.longitude)
print(location.coordinate.latitude)
let newTime : NSDate = NSDate()
let calendar: NSCalendar = NSCalendar.currentCalendar()
let flags = NSCalendarUnit.Second
let components = calendar.components(flags, fromDate: oldTime, toDate: newTime, options: [])
//Update locations to server
self.call_service_insertLocation("location", loc: location)
}
func locationManager(manager: CLLocationManager, didFailWithError error: NSError) {
print(error)
}
【问题讨论】：
-
也许this 会有所帮助
-
您好，请在App的功能中开启
Background Refresh。 -
嘿@Tj3n 我也试过了。它在 ios9 中不起作用，还有其他建议吗？
-
@panktipatel 这里是一个很好的演示，用于在应用程序终止时获取位置mobileoop.com/…
标签： ios swift background location cllocationmanager