/// <summary>
/// to make the app more responsive to the user
/// from nuget, load the xamarin forms goelocator plugin.
/// uses the overidden "OnAppearing()" method to repaint the map
/// when it changes location
/// </summary>
protected async override void OnAppearing()
{
//Onappearing reloads everytime the page is accessed
//since one of the statements is awaitable the method
//should be async
//uses the base class to intiialise the object
base.OnAppearing();
//using the geolocator plugin class to assign a geolocator obj
var myLocater = CrossGeolocator.Current;
//event handler for the location change event
myLocater.PositionChanged += MyLocater_PositionChanged;
//assigns a timespan variable
TimeSpan intervaltime = new TimeSpan(0, 0, 0);
//listens for a change of location sets the time
//interval for the "positionchanged" event to be fired
//and the minimum distance of 100m, awaitable task.
await myLocater.StartListeningAsync(intervaltime, 100);
//assign the geolocation value to a variable
var position = await myLocater.GetPositionAsync();
//moves to the region map place define by the location
var center = new Xamarin.Forms.Maps.Position(position.Latitude, position.Longitude);
var span = new Xamarin.Forms.Maps.MapSpan(center, 2, 2);
LocationsMaps.MoveToRegion(span);
}
private void MyLocater_PositionChanged(object sender, Plugin.Geolocator.Abstractions.PositionEventArgs e)
{
//moves to the region. map place defined by your location
LocationsMaps.MoveToRegion(new Xamarin.Forms.Maps.MapSpan
(new Xamarin.Forms.Maps.Position(e.Position.Latitude, e.Position.Longitude), 2, 2));
}
