public MainPage(IGpsManager manager, IEventAggregator eventAggregator)
{
InitializeComponent();
var map = new Map
{
CRS = "EPSG:3857",
Transformation = new MinimalTransformation()
};
// map.Limiter.PanLimits = new BoundingBox(new Mapsui.Geometries.Point(45.26, 24.68), new Mapsui.Geometries.Point(60.56, 39.26));
map.Layers.Add(OpenStreetMap.CreateTileLayer());
map.Widgets.Add(new ScaleBarWidget(map)
{
TextAlignment = Alignment.Center, HorizontalAlignment = HorizontalAlignment.Center, VerticalAlignment = VerticalAlignment.Top
});
map.Widgets.Add(new ZoomInOutWidget {
MarginX = 20, MarginY = 40
});
mapView.Map = map;
manager.RequestAccessAndStart(new GpsRequest());
manager.StartListener(new GpsRequest());
mapView.Navigator = new Navigator(mapView.Map, (IViewport)mapView.Viewport);
eventAggregator.GetEvent <GpsDataReceivedEvent>().Subscribe(e =>
{
Xamarin.Forms.Device.BeginInvokeOnMainThread(() =>
{
var coords = new Position(e.Position.Latitude, e.Position.Longitude);
info.Text = $"{coords} - D:{(int)e.Heading} S:{Math.Round(e.Speed, 2)}";
mapView.MyLocationLayer.UpdateMyLocation(new Position(e.Position.Latitude, e.Position.Longitude));
mapView.MyLocationLayer.UpdateMyDirection(e.Heading, mapView.Viewport.Rotation);
mapView.MyLocationLayer.UpdateMySpeed(e.Speed);
});
});
}
public MapPage(IGpsManager manager, IEventAggregator eventAggregator)
{
InitializeComponent();
mapView.Map = CreateMap();
manager.RequestAccessAndStart(new GpsRequest()
{
Interval = TimeSpan.FromSeconds(5), UseBackground = true
});
mapView.Navigator = new Navigator(mapView.Map, (IViewport)mapView.Viewport);
this.eventAggregator = eventAggregator;
eventAggregator.GetEvent <GpsDataReceivedEvent>().Subscribe(e =>
{
Xamarin.Forms.Device.BeginInvokeOnMainThread(() =>
{
var coords = new Position(e.Position.Latitude, e.Position.Longitude);
info.Text = $"{coords.ToString()} - D:{(int)e.Heading} S:{Math.Round(e.Speed, 2)}";
mapView.MyLocationLayer.UpdateMyLocation(new Position(e.Position.Latitude, e.Position.Longitude));
mapView.MyLocationLayer.UpdateMyDirection(e.Heading, mapView.Viewport.Rotation);
mapView.MyLocationLayer.UpdateMySpeed(e.Speed);
});
});
}
public async void StartGps()
{
if (!IsGpsConnected)
{
var access = await _gpsManager.RequestAccessAndStart(new GpsRequest()
{
Interval = TimeSpan.FromSeconds(10),
Priority = GpsPriority.Normal,
UseBackground = true
});
if (access != AccessState.Available)
{
Log.Event($"Failed to connect GPS: {access}");
}
else
{
_gpsAvailable = true;
Log.Event($"GPS Connected");
State.ResetThrottle();
MessagingCenter.Send <IGpsManager>(_gpsManager, Constants.Message.GPS_STATE_CHANGED);
}
}
}
