public override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
this.RetainInstance = true;
if (savedInstanceState != null)
{
var latitude = savedInstanceState.GetDouble(KeyGeoLocationLatitude);
var longitude = savedInstanceState.GetDouble(KeyGeoLocationLongitude);
GeoLocation = new GeoLocation
{
Latitude = latitude,
Longitude = longitude
};
var exhibitId = savedInstanceState.GetString(KeyExhibitSetId);
ExhibitSet = ExhibitManager.GetExhibitSet(exhibitId);
}
}
public ExhibitsOverviewViewModel(string exhibitSetId) : this(ExhibitManager.GetExhibitSet(exhibitSetId))
{
}
/// <summary>
/// Since the ExtendedLocationListener will be created as a singleton from a static context,
/// it can't get any attributes during creation and neither during getting an instance of it.
/// Thus, the programmer has to make sure to give the ExtendedLocationListener a context
/// right after callinge getInstance(), otherwise the class is useless.
/// </summary>
private ExtendedLocationListener()
{
exhibitSet = ExhibitManager.GetExhibitSet();
checkedExhibits = new List <string> ();
}