如何将坐标保存到Firebase Swift 2
如何将坐标保存到Firebase Swift 2
提问于 2016-08-13 03:17:22
我想将一组纬度和经度坐标保存到Firebase，但每当我的应用程序运行此代码时，它就会崩溃！
let userID: String = (FIRAuth.auth()?.currentUser?.uid)!
let lat: Double = (locationManager.location?.coordinate.latitude)!
let lon: Double = (locationManager.location?.coordinate.longitude)!
self.ref.child("Location").child(userID).setValue(["Latitude": lat, "Longitude": lon])有没有什么办法可以解决这个问题，并正确有效地保存它？
Stack Overflow用户
回答已采纳
发布于 2016-08-13 04:37:22
确定两件事：
1.)您的viewController继承自CLLocationManagerDelegate，并在viewDidLoad中将其delegate设置为self
2.)您的info.plist添加了以下密钥:-
NSLocationAlwaysUsageDescription -我需要位置
NSLocationWhenInUseUsageDescription -我需要位置
隐私-位置使用说明-我需要位置
class MapViewController: UIViewController , CLLocationManagerDelegate...{
...
..
let locationManager = CLLocationManager()
func viewDidLoad(){
super.viewDidLoad()
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.distanceFilter = kCLDistanceFilterNone
locationManager.requestWhenInUseAuthorization()
locationManager.startMonitoringSignificantLocationChanges()
locationManager.startUpdatingLocation()
}
//Call these functions for updating the getting the values of current location
func locationManager(manager: CLLocationManager, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
if status == .AuthorizedWhenInUse {
print("authorised call came . . . . ")
mapView.myLocationEnabled = true
}
}
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
if let location = locations.first {
print("target position : = \(location.coordinate)")
print(locationManager.location!.coordinate.latitude)
mapView.camera = GMSCameraPosition(target: location.coordinate, zoom: 15, bearing: 0, viewingAngle: 0)
locationManager.stopUpdatingLocation()
self.FIRDatabase.database().reference().child("Location").child(FIRAuth.auth()!.currentUser!.uid).setValue(["Latitude": locationManager.location!.coordinate.latitude, "Longitude": locationManager.location!.coordinate.longitude])
}
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/38925064
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