[英]Swift Parse Saving an Annotation from MapView as a PFGeoPoint
我有一個應用程序,讓用戶在MapView上選擇其品牌所基於的位置。 當他們點擊地圖上的位置時,它會創建帶有標題和副標題的注釋。 我現在想做的是,當用戶單擊“下一步”按鈕時,將此注釋轉換為PFGeoPoint,以便可以將其保存到Parse,然后查詢並顯示在地圖上,以供每個用戶查看。
以下是允許用戶為其位置創建注釋的代碼:
//Annotations
func longpress(gestureRecognizer: UIGestureRecognizer){
let touchPoint = gestureRecognizer.location(in: self.map)
let coordinate = map.convert(touchPoint, toCoordinateFrom: self.map)
let annotation = MKPointAnnotation()
if isAnnotated == true {
annotation.coordinate = coordinate
annotation.title = PFUser.current()?.username
annotation.subtitle = (PFUser.current()?.username)! + " is based here!"
//removes annotation
let allAnnotations = self.map.annotations
self.map.removeAnnotations(allAnnotations)
//adds annotation
self.map.addAnnotation(annotation)
print("REMOVED")
isAnnotated = false
} else {
annotation.coordinate = coordinate
annotation.title = PFUser.current()?.username
annotation.subtitle = (PFUser.current()?.username)! + " is based here!"
//removes annotation
let allAnnotations = self.map.annotations
self.map.removeAnnotations(allAnnotations)
//adds annotation
self.map.addAnnotation(annotation)
print("ANNOTATION ADDED")
isAnnotated = true
}
}
現在,我需要將注釋另存為PFGeoPoint,但是我不太確定該怎么做。 似乎PFGeoPoint想要CLLocation形式的位置,但我不知道如何將注釋轉換為該位置。 到目前為止,我可以提供將其保存到Parse的代碼,但是由於我不知道如何將注釋轉換為可以保存到Parse的格式,所以它確實很混亂。 任何幫助深表感謝。 謝謝!
編輯-這是我的代碼,我現在只需要一種方法即可將包含注釋坐標的geoPoint變量另存為“下一個”函數下的PFGeoPoint
import UIKit
import Parse
import MapKit
import CoreLocation
class BrandLocation: UIViewController, MKMapViewDelegate, CLLocationManagerDelegate {
var activityIndicator = UIActivityIndicatorView()
var isAnnotated = false
@IBOutlet var map: MKMapView!
var locationManager = CLLocationManager()
//QUESTIONABLE
var currentLoc: PFGeoPoint! = PFGeoPoint()
//QUESTIONABLE
var MapViewLocationManager:CLLocationManager! = CLLocationManager()
//ANNOTATION DECLARED
let annotation = MKPointAnnotation()
//Defines geoPoint as nil
var geoPoint : CLLocationCoordinate2D! = nil
func createAlert(title: String, message: String) {
let alert = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.alert)
alert.addAction(UIAlertAction(title: "OK", style: .default, handler: { (action) in
alert.dismiss(animated: true, completion: nil)
}))
self.present(alert, animated: true, completion: nil)
}
//THIS IS WHERE PFGEOPOINT IS SAVED
@IBAction func next(_ sender: AnyObject) {
activityIndicator = UIActivityIndicatorView(frame: CGRect(x: 0, y: 0, width: 50, height: 50))
activityIndicator.center = self.view.center
activityIndicator.hidesWhenStopped = true
activityIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyle.gray
view.addSubview(activityIndicator)
activityIndicator.startAnimating()
UIApplication.shared.beginIgnoringInteractionEvents()
let brandLocation = PFObject(className: "location")
//this is the main problem, I'm not sure how to take the coordinates I've defined in the geoPoint variable and now save them as a PFGeoPoint
geoPoint = PFGeoPoint(location: )
geoPoint["brandLocation"] = self.map.annotations
// let geopoint: CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: latitude, longitude: longitude)
brandLocation["annotationTitle"] = self.map.annotations
brandLocation["annotationSubtitle"] = self.map.annotations
brandLocation.saveInBackground { (succes, error) -> Void in
self.activityIndicator.stopAnimating()
UIApplication.shared.endIgnoringInteractionEvents()
if error != nil {
self.createAlert(title: "Could not update profile", message: "There was a problem updating your profile")
print(":(((")
} else {
self.createAlert(title: "Profile Updated", message: "Profile details successfully updated")
print("MAPPED")
self.performSegue(withIdentifier: "toUserFeed", sender: self)
}
}
// self.performSegue(withIdentifier: "toUserFeed", sender: self)
}
//VIEW DID LOAD
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = UIColor.black
self.navigationController?.isNavigationBarHidden = true
self.tabBarController?.tabBar.isHidden = true
navigationController?.navigationBar.barTintColor = UIColor.black
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.requestWhenInUseAuthorization()
locationManager.startUpdatingLocation()
let uipgr = UITapGestureRecognizer(target: self, action: #selector(BrandLocation.longpress(gestureRecognizer:)))
//uipgr.minimumPressDuration = 1
//uipgr.numberOfTapsRequired = 1
map.addGestureRecognizer(uipgr)
}
override func viewDidAppear(_ animated: Bool) {
}
//Setting up map & location zoom
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
let userLocation: CLLocation = locations[0]
let latitude = userLocation.coordinate.latitude
let longitude = userLocation.coordinate.longitude
let latDelta: CLLocationDegrees = 0.05
let lonDelta: CLLocationDegrees = 0.05
let span = MKCoordinateSpan(latitudeDelta: latDelta, longitudeDelta: lonDelta)
let location = CLLocationCoordinate2D(latitude: latitude, longitude: longitude)
let region = MKCoordinateRegion(center: location, span: span)
self.map.setRegion(region, animated: true)
locationManager.stopUpdatingLocation()
}
//Annotations
func longpress(gestureRecognizer: UIGestureRecognizer){
let touchPoint = gestureRecognizer.location(in: self.map)
let coordinate = map.convert(touchPoint, toCoordinateFrom: self.map)
//DECLARED ABOVE
//let annotation = MKPointAnnotation()
//WORKING ON GEOPOINT
// currentLoc = PFGeoPoint(location: MapViewLocationManager.location)
//Declares and defines geoPoint
let latitude = annotation.coordinate.latitude
let longitude = annotation.coordinate.longitude
self.geoPoint = CLLocationCoordinate2D(latitude: latitude, longitude: longitude)
if isAnnotated == true {
annotation.coordinate = coordinate
annotation.title = PFUser.current()?.username
annotation.subtitle = (PFUser.current()?.username)! + " is based here!"
//removes annotation
let allAnnotations = self.map.annotations
self.map.removeAnnotations(allAnnotations)
//adds annotation
self.map.addAnnotation(annotation)
print("REMOVED")
isAnnotated = false
} else {
annotation.coordinate = coordinate
annotation.title = PFUser.current()?.username
annotation.subtitle = (PFUser.current()?.username)! + " is based here!"
//removes annotation
let allAnnotations = self.map.annotations
self.map.removeAnnotations(allAnnotations)
//adds annotation
self.map.addAnnotation(annotation)
print("ANNOTATION ADDED")
isAnnotated = true
}
}
使用注釋坐標設置地理位置。
let latitude = annotation.coordinate.latitude
let longitude = annotation.coordinate.longitude
let geopoint: CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: latitude, longitude: longitude)
為您保存功能
for annotation in self.map.annotations {
//get location of all annotation
let latitude = annotation.coordinate.latitude
let longitude = annotation.coordinate.longitude
let geoPoint = CLLocationCoordinate2D(latitude: latitude, longitude: longitude)
//save in Parse object
let brandLocation = PFObject(className: "location")
brandLocation["annotationTitle"] = annotation.annotationTitle
brandLocation["annotationSubtitle"] = annotation.annotationSubtitle
brandLocation["geoPoint"] = geoPoint
brandLocation.saveInBackground { (succes, error) -> Void in
....
}
}
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