DashboardScreen.cs

using System;
using System.Drawing;
using MonoTouch.Foundation;
using MonoTouch.UIKit;
using MonoTouch.MapKit;
using MonoTouch.CoreLocation;
using FlyoutNavigation;
using MonoTouch.Dialog;

namespace mvc_iphone
{

	public partial class DashboardScreen : UIViewController
	{
		MKMapView mapView;

		public DashboardScreen () : base ("DashboardScreen", null)
		{
			this.Title = "Hem";
		}

		public override void DidReceiveMemoryWarning ()
		{
			// Releases the view if it doesn't have a superview.
			base.DidReceiveMemoryWarning ();
			
			// Release any cached data, images, etc that aren't in use.
		}

		public override void ViewDidLoad ()
		{
			base.ViewDidLoad ();
			// Hide "Back" button
			this.NavigationItem.SetHidesBackButton (true, false);
			mapView = new MKMapView (View.Bounds);
			mapView.AutoresizingMask = UIViewAutoresizing.FlexibleDimensions;
			View.AddSubview (mapView);
			mapView.MapType = MKMapType.Standard;
			mapView.ShowsUserLocation = true;

			var navigation = new FlyoutNavigationController {
				// Create the navigation menu
				NavigationRoot = new RootElement ("Navigation") {
					new Section ("Navigering") {
						new StringElement ("Profil"),
						new StringElement ("Karta"),
						new StringElement ("Inställningar"),
						new StringElement ("Förarläge")
					}
				},
				// Supply view controllers corresponding to menu items:
				ViewControllers = new [] {
					new UIViewController { View = new UILabel { Text = "Vegetables (drag right)" } },
					new UIViewController { View = mapView },
					new UIViewController { View = new UILabel { Text = "Minerals (drag right)" } },
					new UIViewController { View = new UILabel { Text = "TJO" } }
				},
			};

			// När användarens position uppdateras
			mapView.DidUpdateUserLocation += (sender, e) => {
				if (mapView.UserLocation != null) {
					CLLocationCoordinate2D coords = mapView.UserLocation.Coordinate;
					MKCoordinateSpan span = new MKCoordinateSpan(MilesToLatitudeDegrees(2), MilesToLongitudeDegrees(2, coords.Latitude));
					mapView.Region = new MKCoordinateRegion(coords, span);
				}
			};
	
			this.NavigationItem.SetLeftBarButtonItem (
				new UIBarButtonItem (UIBarButtonSystemItem.Action, (sender, args) => {
					// Show the navigation view
					navigation.ToggleMenu ();
					navigation.View.AutoresizingMask = UIViewAutoresizing.FlexibleDimensions;
					View.AddSubview (navigation.View);
				}), true);
		}

		public double MilesToLatitudeDegrees(double miles)
		{
			double earthRadius = 3960.0; // in miles
			double radiansToDegrees = 180.0/Math.PI;
			return (miles/earthRadius) * radiansToDegrees;
		}

		public double MilesToLongitudeDegrees(double miles, double atLatitude)
		{
			double earthRadius = 3960.0; // in miles
			double degreesToRadians = Math.PI/180.0;
			double radiansToDegrees = 180.0/Math.PI;
			// derive the earth's radius at that point in latitude
			double radiusAtLatitude = earthRadius * Math.Cos(atLatitude * degreesToRadians);
			return (miles / radiusAtLatitude) * radiansToDegrees;
		}
	}
}