topic Can't get user location in iOS app using a web map. in ArcGIS Runtime SDK for iOS Questions

Can't get user location in iOS app using a web map.

GinaDe_La_Rosa — Sat, 03 Sep 2016 07:44:13 GMT

Im running a web map on my ios app using Swift but am unable to get the current location once the map loads. I've also made sure to add NSLocationWhenInUseUsageDescription in the Info.plist file. Below is the code I'm working with.

import UIKit

import ArcGIS

import CoreLocation

class MapViewController: UIViewController, AGSCalloutDelegate, AGSMapViewLayerDelegate, AGSWebMapDelegate, CLLocationManagerDelegate

{

@IBOutlet weak var mapView: AGSMapView!

let webMap = AGSWebMap(itemId: "f553d4b86e354c05917ad269de26f6f0", credential: nil)

var locationManager = CLLocationManager()

override func viewDidLoad() {

super.viewDidLoad()

self.webMap.openIntoMapView(self.mapView)

self.webMap.delegate = self

locationManager = CLLocationManager()

locationManager.delegate = self

locationManager.desiredAccuracy = kCLLocationAccuracyBest

locationManager.startUpdatingLocation()

locationManager.requestWhenInUseAuthorization()

}

func webMapViewDidLoad(mapView: AGSWebMap!) {

self.mapView.locationDisplay.startDataSource()

}

func webMapDidLoad(webMap: AGSWebMap!) {

print("Web Map Loaded")

}

func didOpenWebMap(webMap: AGSWebMap!, intoMapView mapView: AGSMapView!) {

print("Opened the Web Map into the Map View")

}

func webMap(webMap: AGSWebMap!, didLoadLayer layer: AGSLayer!) {

print("Loaded layer \(layer.name)")

}

func webMapView(webMap: AGSWebMap!, didFailToLoadWithError error: NSError!) {

print("Layer failed to load into Web Map! \(error.localizedDescription)")

}

Any help would be greatly appreciated!

Re: Can't get user location in iOS app using a web map.

GagandeepSingh — Tue, 06 Sep 2016 17:36:03 GMT

Can you remove the `locationManager` code, delete the app and install again. And see if you get asked for location authorization?

Re: Can't get user location in iOS app using a web map.

GinaDe_La_Rosa — Wed, 07 Sep 2016 02:28:59 GMT

I deleted the app off the simulator and cleaned it. Not getting any results yet. Below is my updated code.

import UIKit

import ArcGIS

import CoreLocation

class MapViewController: UIViewController, AGSCalloutDelegate, AGSMapViewLayerDelegate, AGSWebMapDelegate,CLLocationManagerDelegate

{

@IBOutlet weak var mapView: AGSMapView!

let webMap = AGSWebMap(itemId: "f553d4b86e354c05917ad269de26f6f0", credential: nil)

override func viewDidLoad() {

super.viewDidLoad()

self.webMap.openIntoMapView(self.mapView)

self.webMap.delegate = self

}

func webMapViewDidLoad(mapView: AGSWebMap!) {

self.mapView.locationDisplay.startDataSource()

}

func webMapDidLoad(webMap: AGSWebMap!) {

print("Web Map Loaded")

}

func didOpenWebMap(webMap: AGSWebMap!, intoMapView mapView: AGSMapView!) {

print("Opened the Web Map into the Map View")

}

func webMap(webMap: AGSWebMap!, didLoadLayer layer: AGSLayer!) {

print("Loaded layer \(layer.name)")

}

func webMapView(webMap: AGSWebMap!, didFailToLoadWithError error: NSError!) {

print("Layer failed to load into Web Map! \(error.localizedDescription)")

}

Re: Can't get user location in iOS app using a web map.

GagandeepSingh — Mon, 12 Sep 2016 18:03:10 GMT

1. Can you check if the control is going inside `webMapViewDidLoad` method? You can put a breakpoint at that line in debug mode or simply put a NSLog statement.

2. When you using CLLocationManager code below, did you get the authorization alert in the app, the first time you ran the app?

locationManager = CLLocationManager()

locationManager.delegate = self

locationManager.desiredAccuracy = kCLLocationAccuracyBest

locationManager.startUpdatingLocation()

locationManager.requestWhenInUseAuthorization()

3. What version of the ArcGIS SDK are you using?

Re: Can't get user location in iOS app using a web map.

YueWu1 — Sat, 11 Dec 2021 09:34:09 GMT

Hi Gina,

Make sure you test with this on a physical machine and sometimes the simulator may not show up correctly with location. Here is the video clip that shows it works with my physical device: Webmap with locationDisplay.

Here I shared with you the code in that video:

import UIKit
import ArcGIS

class ViewController: UIViewController , AGSWebMapDelegate, AGSMapViewLayerDelegate {

    @IBOutlet weak var mapView: AGSMapView!
    var currentLocation: AGSLocation!
    let webmap = AGSWebMap(itemId: "f553d4b86e354c05917ad269de26f6f0", credential: nil)
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        self.webmap.delegate = self
        
        self.webmap.openIntoMapView(self.mapView)
        self.mapView.locationDisplay.startDataSource()

    }
    
    func webMapDidLoad(webMap: AGSWebMap!) {
    
        print("Load webmap!")
    }
    
    func webMap(webMap: AGSWebMap!, didLoadLayer layer: AGSLayer!) {
        
        currentLocation = self.mapView.locationDisplay.location
        print(currentLocation)
        
        let projectedMapPoint = AGSGeometryEngine.defaultGeometryEngine().projectGeometry(currentLocation.point, toSpatialReference: AGSSpatialReference.webMercatorSpatialReference()) as! AGSPoint;
        
        self.webmap.mapView.centerAtPoint(projectedMapPoint, animated: true)
    
    }
    
    
    func webMap(webMap: AGSWebMap!, didFailToLoadWithError error: NSError!) {
        print("Error while loading webmap: \(error.localizedDescription)")
    }

}‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

If you really need to make it work in simulator, make sure to "Configuring a Project".

Bring up your project's scheme editor by navigating to Product -> Scheme -> Edit Scheme in menu bar. In the scheme's Run action, select the Options tab. You should see something similar to this:

Hope this can help.