CODEWITHSUNDEEP
c#xamarinxamarin.formsxamarin.iosgeolocation
John
John

Reputation: 78

finding my location doesn't work on xamarin.ios

While building my xamarin app I noticed a rather strange behaviour on xamarin.ios. I'm using the geolocator.plugin to find my location and than ofcourse I use this location as I need it through the app. Everything works fine in xamarin.android project but in the xamarin.ios the stops as soon as I call the service on which I find the location. This is a sample of my code:

service.cs 

    public async Task<Plugin.Geolocator.Abstractions.Position> GetDeviceCurrentLocation()
    {
        try
        {
            var locator = Plugin.Geolocator.CrossGeolocator.Current;
            locator.DesiredAccuracy = 50;
            var position = await locator.GetPositionAsync(TimeSpan.FromSeconds(3));
            if (position != null)
            {
                return position;
            }
        }
        catch (Exception ex)
        {
            Debug.WriteLine("Unable to get location, may need to increase timeout: " + ex);
        }

        return new Plugin.Geolocator.Abstractions.Position();
    }

and this is my MyViewExample.xaml.cs

    public partial class MyViewExample : ContentPage
    {
        public MyViewExample()
        {
            InitializeComponent();
            Service cs = new Service();
            var myLocation = Task.Run(() => api.GetDeviceCurrentLocation()).Result;
            var myLatitude = myLocation.Latitude;
            var myLongitude = myLocation.Longitude; 
            Debug.Writeline("Latitude is : " + myLatitude + " and Longitude is : " + myLongitude);
         }
     }

this is my info.plist file :

    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
    <plist version="1.0">
        <dict>
            --
            --
            --
            --
            --
            --
            <key>UILaunchStoryboardName</key>
            <string>LaunchScreen</string>
            <key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
            <string>This app needs access location when open and in the background</string>
            <key>NSLocationAlwaysUsageDescription</key>
            <string>Need location for geolocator plugin</string>
            <key>RequestWhenInUseAuthorization</key>
            <string>Need location for geolocator plugin</string>
            <key>CFBundleIdentifier</key>
            <string>my.app.development</string>
        </dict>
    </plist>

Can anyone give me any clue on why I'm having trouble on getting location on xamarin.ios? Am I forgetting something? I've gone through numerous examples but none worked for me. Any idea on how can I approach at this problem? Any help would be crucial and highly appreciated :). Thanks in advance!

Upvotes: 1

Views: 938

Answers (1)

John
John

Reputation: 78

Since my task was async, I needed to await this task. But instead of await-ing it I used this line of code to run the task on the main thread.

var myLocation = Task.Run(() => cs.GetDeviceCurrentLocation()).Result;

And this was the problem with my app. Looks like xamarin.ios doesn't support this kind of "hack". As soon as I made an another method asynchronus and used this line

var myLocation = await cs.GetDeviceCurrentLocation();

everything worked like charm. Hope it helps others looking for an answer of the same problem :)

Upvotes: 1

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