// Redraw the map whenever the RouteCoordinates property has changed to draw the line from PointA to PointB
protected override void OnElementChanged(Xamarin.Forms.Platform.Android.ElementChangedEventArgs <Map> e)
{
base.OnElementChanged(e);
if (e.OldElement == null)
{
formsMap = (CustomMapOverlay)e.NewElement;
Control.GetMapAsync(this);
}
}
// Redraw the map whenever the RouteCoordinates property has
// changed to draw the line from PointA to PointB
protected override void OnElementChanged(Xamarin.Forms.Platform.Android.ElementChangedEventArgs <Map> e)
{
// This is referencing <Map> from Xamarin.Forms.Android, check to see for any issue, we might need to referece the one from
// Xamarin.Essentials
base.OnElementChanged(e);
if (e.OldElement == null)
{
formsMap = (CustomMapOverlay)e.NewElement;
Control.GetMapAsync(this);
}
}
public WalkDistancePage()
{
InitializeComponent();
// Create an instance to our TwitterWebService class
//TwitterObject = new TwitterWebService(TwitterAuthDetails.ConsumerKey,
//TwitterAuthDetails.ConsumerSecret,
//TwitterAuthDetails.AuthToken, TwitterAuthDetails.AuthTokenSecret);
TwitterObject = new TwitterWebService();
// Update the Title and Initialise our BindingContext for the Page
Title = "Distance Travelled Information";
this.BindingContext = new WalkDistancePageViewModel(DependencyService.Get <INavigationService>());
// Get the current GPS location coordinates and listen for updates
origPosition = _viewModel.GetCurrentLocation();
_viewModel.CoordsChanged += Location_PositionChanged;
_viewModel.OnStartUpdate();
// Instantiate our Custom Map Overlay
customMap = new CustomMapOverlay
{
MapType = MapType.Street
};
// Clear all previously created Pins on our CustomMap
customMap.Pins.Clear();
// Create the Pin placeholder that will represent our current location
CreatePinPlaceholder(PinType.Place,
origPosition.Result.Latitude,
origPosition.Result.Longitude,
"",
"My Location", 1);
// Create the Pin placeholder that will represent our ending location
CreatePinPlaceholder(PinType.Place,
_viewModel.Latitude,
_viewModel.Longitude,
_viewModel.Title,
"Difficulty: " + _viewModel.Difficulty + " Total Distance: " + _viewModel.Distance,
2);
// Add the Starting and Ending Latitude and Longitude Coordinates
customMap.RouteCoordinates.Add(new Xamarin.Forms.Maps.Position(origPosition.Result.Latitude, origPosition.Result.Longitude));
customMap.RouteCoordinates.Add(new Xamarin.Forms.Maps.Position(_viewModel.Latitude, _viewModel.Longitude));
// Create and Initialise a map region within a one-kilometre radius
customMap.MoveToRegion(MapSpan.FromCenterAndRadius(new Xamarin.Forms.Maps.Position(origPosition.Result.Latitude, origPosition.Result.Longitude), Distance.FromKilometers(1)));
// Display our Custom Map for the detected device Platform
Content = customMap;
}
public WalkDistancePage()
{
InitializeComponent();
this.Title = "Distance Travelled Information";
this.BindingContext = new WalkDistancePageViewModel(DependencyService.Get <INavigationService>());
origPosition = _viewModel.GetCurrentLocation();
_viewModel.CoordsChanged += Location_CoordsChanged;
_viewModel.OnStartUpdate();
customMap = new CustomMapOverlay
{
MapType = MapType.Street
};
customMap.Pins.Clear();
CreatePinPlaceholder(PinType.Place,
origPosition.Result.Latitude,
origPosition.Result.Longitude,
"",
"My Location", 1);
CreatePinPlaceholder(PinType.Place,
_viewModel.Latitude,
_viewModel.Longitude,
_viewModel.Title,
"Difficulty: " + _viewModel.Difficulty + "Total Distance: " + _viewModel.Distance, 2);
customMap.RouteCoordinates.Add(new Xamarin.Forms.Maps.Position(
origPosition.Result.Latitude,
origPosition.Result.Longitude));
customMap.RouteCoordinates.Add(new Xamarin.Forms.Maps.Position(
_viewModel.Latitude,
_viewModel.Longitude));
customMap.MoveToRegion(MapSpan.FromCenterAndRadius(
new Xamarin.Forms.Maps.Position(
origPosition.Result.Latitude,
origPosition.Result.Longitude),
Distance.FromKilometers(1)));
Content = customMap;
// create a region around of 1 kilometer
customMap.MoveToRegion(
MapSpan.FromCenterAndRadius(new Xamarin.Forms.Maps.Position(_viewModel.Latitude, _viewModel.Longitude), Distance.FromKilometers(1.0))
);
}
void AddCustomOverlay(MapView map)
{
var customOverlay = new CustomMapOverlay();
map.Overlays.Add(customOverlay);
}
// REQUIRED for overlay
void AddPinOverlay(MapView map)
{
var pinOverlay = new CustomMapOverlay();
map.Overlays.Add(pinOverlay);
}
public WalkDistancePage()
{
InitializeComponent();
// Create an instance to our TwitterWebService class
TwitterObject = new TwitterWebService();
// Update the Title and Initialise our BindingContext for the Page
Title = "Distance Travelled Information";
this.BindingContext = new WalkDistancePageViewModel(DependencyService.Get <INavigationService>());
#region using defaultmap/oldmap implementation
// Create a pin placeholder within the map containing the
// walk information
//customMap.Pins.Add(new Pin
//{
// Type = PinType.Place,
// Position = new Position(_viewModel.Latitude, _viewModel.Longitude),
// Label = _viewModel.Title,
// Address = "Difficulty: " + _viewModel.Difficulty + " Total Distance: " + _viewModel.Distance,
// MarkerId = _viewModel.Title
//});
// Create a region around the map within a one-kilometer radius
//customMap.MoveToRegion(MapSpan.FromCenterAndRadius(new
//Position(_viewModel.Latitude, _viewModel.Longitude),
//Distance.FromKilometers(1.0)));
#endregion
// Get the current GPS location coordinates and listen
// for updates
origPosition = _viewModel.GetCurrentLocation();
_viewModel.CoordsChanged += Location_CoordsChanged;
_viewModel.OnStartUpdate();
// Instantiate our Custom Map Overlay
customMap = new CustomMapOverlay
{
MapType = MapType.Street
};
// Clear all previously created Pins on our CustomMap
customMap.Pins.Clear();
// Create the Pin placeholder that will represent our
// current location
CreatePinPlaceholder(PinType.Place, origPosition.Result.Latitude, origPosition.Result.Longitude, "", "My Location", 1);
// Create the Pin placeholder that will represent our
// ending location
CreatePinPlaceholder(PinType.Place,
_viewModel.Latitude,
_viewModel.Longitude,
_viewModel.Title,
"Difficulty: " + _viewModel.Difficulty +
" Total Distance: " + _viewModel.Distance, 2);
// Add the Starting and Ending Latitude and Longitude
// Coordinates
customMap.RouteCoordinates.Add(new Xamarin.Forms.Maps.Position(
origPosition.Result.Latitude,
origPosition.Result.Longitude));
customMap.RouteCoordinates.Add(new Xamarin.Forms.Maps.Position(
_viewModel.Latitude,
_viewModel.Longitude));
// Create and Initialise a map region within a
// one-kilometre radius
customMap.MoveToRegion(MapSpan.FromCenterAndRadius(
new Xamarin.Forms.Maps.Position(
origPosition.Result.Latitude,
origPosition.Result.Longitude),
Distance.FromKilometers(1)));
// Display our Custom Map for the detected device
// Platform
Content = customMap;
}
// REQUIRED for overlay
void AddPinOverlay(MapView map)
{
var pinOverlay = new CustomMapOverlay();
map.Overlays.Add(pinOverlay);
}
void AddCustomOverlay (MapView map)
{
var customOverlay = new CustomMapOverlay ();
map.Overlays.Add (customOverlay);
}
