我正在开发一个需要定期更新用户位置的应用程序,但是当应用程序暂停或在后台运行时我无法获取位置更新。我还在功能中启用了后台位置更新。
viewDidLoad代码:
override func viewDidLoad() {
super.viewDidLoad()
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.allowsBackgroundLocationUpdates = true
locationManager.requestAlwaysAuthorization()
locationManager.requestWhenInUseAuthorization()
let user=FIRAuth.auth()?.currentUser?.displayName
if(CLLocationManager.authorizationStatus() == CLAuthorizationStatus.authorizedAlways || CLLocationManager.authorizationStatus() == CLAuthorizationStatus.authorizedWhenInUse){
locationManager.requestLocation()
location=locationManager.location
locationManager.startUpdatingLocation()
locationManager.startMonitoringSignificantLocationChanges()
//updating to database
ref.child("\(user!)/lat").setValue(location.coordinate.latitude)
ref.child("\(user!)/long").setValue(location.coordinate.longitude)
//location=locationManager.location
}
}
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
location=locations[locations.count-1]
}
最佳答案
启用位置更新 -> 后台模式 -> 功能
我正在使用这种方法在后台获取位置。这个方法写在AppDelegate类中
func getLocation() {
self.locationManager = CLLocationManager()
self.locationManager.delegate = self
if self.locationManager.responds(to: #selector(self.requestAlwaysAuthorization)) {
self.locationManager.requestAlwaysAuthorization()
}
self.locationManager.distanceFilter = kCLDistanceFilterNone
self.locationManager.desiredAccuracy = kCLLocationAccuracyBest
if !CLLocationManager.locationServicesEnabled() {
// location services is disabled, alert user
var servicesDisabledAlert = UIAlertView(title: "Alert", message: "Location service is disable. Please enable to access your current location.", delegate: nil, cancelButtonTitle: "OK", otherButtonTitles: "")
servicesDisabledAlert.show()
}
else {
self.locationManager.startUpdatingLocation()
}
}
关于ios - 即使应用程序在后台运行,如何使用 swift 在 ios 中获取位置更新,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/42082147/