public async Task IniciaGPS()
{
Ocupado = true;
var plataforma = DependencyService.Get <IGeo>();
if (plataforma != null)
{
Geo g = new Geo();
plataforma.LatLonUpd = delegate(Geo gtmp)
{
Posicion = gtmp;
};
plataforma.GetLatLon();
}
Ocupado = false;
}
public static double GetDistance(Geo p1, Geo p2)
{
double distance = 0;
try
{
double Lat = (p2.latitude - p1.latitude) * (Math.PI / 180);
double Lon = (p2.longitud - p1.longitud) * (Math.PI / 180);
double a = Math.Sin(Lat / 2) * Math.Sin(Lat / 2) + Math.Cos(p1.latitude * (Math.PI / 180)) * Math.Cos(p2.latitude * (Math.PI / 180)) * Math.Sin(Lon / 2) * Math.Sin(Lon / 2);
double c = 2 * Math.Atan2(Math.Sqrt(a), Math.Sqrt(1 - a));
distance = EarthRadius * c;
}
catch
{
}
return(distance * 1000);
}