public void CenterOnLocations(List <LatitudeLongitude> locations
, bool with_animation = false)
{
if (locations == null || locations.Count == 0)
{
return;
}
var minLat = locations.Select(el => el.Latitude).Min();
var minLong = locations.Select(el => el.Longitude).Min();
var maxLat = locations.Select(el => el.Latitude).Max();
var maxLong = locations.Select(el => el.Longitude).Max();
var coordinateMin = new CLLocationCoordinate2D(minLat, minLong);
var coordinateMax = new CLLocationCoordinate2D(maxLat, maxLong);
var upperLeft = MKMapPoint.FromCoordinate(coordinateMin);
var lowerRight = MKMapPoint.FromCoordinate(coordinateMax);
var mapRect = new MKMapRect(upperLeft.X
, upperLeft.Y
, lowerRight.X - upperLeft.X
, lowerRight.Y - upperLeft.Y);
var region = MKCoordinateRegion.FromMapRect(mapRect);
MapViewControl.SetVisibleMapRect(mapRect
, new UIEdgeInsets(50, 20, 100, 20)
, true);
try
{
if (region.Center.Latitude > -89 && region.Center.Latitude < 89 && region.Center.Longitude > -179 && region.Center.Longitude < 179)
{
if (region.Span.LatitudeDelta < 0)
{
region.Span.LatitudeDelta = 0.0;
}
if (region.Span.LongitudeDelta < 0)
{
region.Span.LongitudeDelta = 0.0;
}
MapViewControl.SetRegion(region, with_animation);
}
}
catch (Exception)
{
//UIAlertView alert = new UIAlertView("Exception", String.Format("{0} \n {1}?", e.Message, e.StackTrace), null, "Cancel");
//alert.Show();
}
}
private void ZoomInButton_TouchUpInside(object sender, EventArgs e)
{
_zoomInButton.UserInteractionEnabled = false;
var region = MapViewControl.Region;
var span = MapViewControl.Region.Span;
region.Center = MapViewControl.Region.Center;
span.LatitudeDelta = MapViewControl.Region.Span.LatitudeDelta / 2.0002;
span.LongitudeDelta = MapViewControl.Region.Span.LongitudeDelta / 2.0002;
region.Span = span;
MapViewControl.SetRegion(region, true);
_zoomInButton.UserInteractionEnabled = true;
}
public void CenterInLocalisation(double latitude
, double longitude
, float zoomLevel
, bool withAnimation = false)
{
var mapCenter = new CLLocationCoordinate2D(latitude, longitude);
if (zoomLevel != 0)
{
var span = new MKCoordinateSpan(0, 360 / Math.Pow(2, zoomLevel) * MapViewControl.Frame.Size.Width / 256);
var mapRegion = new MKCoordinateRegion(mapCenter, span);
MapViewControl.CenterCoordinate = mapCenter;
MapViewControl.SetRegion(mapRegion, withAnimation);
}
else
{
MapViewControl.CenterCoordinate = mapCenter;
}
}
private void ZoomOutButton_TouchUpInside(object sender, EventArgs e)
{
_zoomOutButton.UserInteractionEnabled = false;
var region = MapViewControl.Region;
var span = MapViewControl.Region.Span;
region.Center = MapViewControl.Region.Center;
span.LatitudeDelta = MapViewControl.Region.Span.LatitudeDelta * 2;
span.LongitudeDelta = MapViewControl.Region.Span.LongitudeDelta * 2;
region.Span = span;
if (span.LatitudeDelta > 200 || span.LongitudeDelta > 200)
{
return;
}
MapViewControl.SetRegion(region, true);
_zoomOutButton.UserInteractionEnabled = true;
}
private void SelectAnnotation()
{
MapViewControl.RemoveAnnotations(MapViewControl.Annotations);
if (ViewModel.Annotation != null &&
ViewModel.Annotation.Addresses != null &&
ViewModel.Annotation.Addresses.Length > 0)
{
var annotations = ViewModel.Annotation.Addresses
.Select(address => new MapViewAnnotation(
ViewModel.Annotation.Pin,
ViewModel.Annotation.Title,
address)).ToArray();
var coordinates = MapUtil.GetAnnotationsCoordinates(annotations);
MapViewControl.SetRegion(
MapUtil.CoordinateRegionForCoordinates(
coordinates,
new MKMapSize(5000, 5000)),
false);
MapViewControl.AddAnnotations(annotations);
MapViewControl.SelectAnnotation(annotations[0], false);
}
}