private void AddColorsToMarkers(GeoJsonLayer layer)
{
// Iterate over all the features stored in the layer
foreach (GeoJsonFeature feature in layer.Features.ToEnumerable())
{
// Check if the magnitude property exists
if (feature.GetProperty("mag") != null && feature.HasProperty("place"))
{
double magnitude = Double.Parse(feature.GetProperty("mag"));
// Get the icon for the feature
BitmapDescriptor pointIcon = BitmapDescriptorFactory.DefaultMarker(MagnitudeToColor(magnitude));
// Create a new point style
GeoJsonPointStyle pointStyle = new GeoJsonPointStyle();
// Set options for the point style
pointStyle.Icon = pointIcon;
pointStyle.Title = "Magnitude of " + magnitude;
pointStyle.Snippet = "Earthquake occured " + feature.GetProperty("place");
// Assign the point style to the feature
feature.PointStyle = pointStyle;
}
}
}
private void addGeoJsonLayerToMap(GeoJsonLayer layer)
{
addColorsToMarkers(layer);
layer.AddLayerToMap();
// Demonstrate receiving features via GeoJsonLayer clicks.
layer.SetOnFeatureClickListener(this);
}
private void AddGeoJsonLayerToMap(GeoJsonLayer layer)
{
AddColorsToMarkers(layer);
layer.AddLayerToMap();
googleMap.MoveCamera(CameraUpdateFactory.NewLatLng(new LatLng(31.4118, -103.5355)));
// Demonstrate receiving features via GeoJsonLayer clicks.
layer.SetOnFeatureClickListener(this);
}
private void RetrieveFileFromResource()
{
try
{
GeoJsonLayer layer = new GeoJsonLayer(googleMap, Resource.Raw.earthquakes_with_usa, this);
AddGeoJsonLayerToMap(layer);
}
catch (Exception)
{
Console.WriteLine("GeoJSON file could not be read");
}
}
private void retrieveFileFromResource()
{
try
{
GeoJsonLayer layer = new GeoJsonLayer(getMap(), Resource.Raw.earthquakes_with_usa, this);
addGeoJsonLayerToMap(layer);
}
catch (IOException)
{
Log.Error(mLogTag, "GeoJSON file could not be read");
}
catch (JSONException)
{
Log.Error(mLogTag, "GeoJSON file could not be converted to a JSONObject");
}
}
private async void DownloadGeoJsonFile(string url)
{
await Task.Factory.StartNew(() =>
{
using (var Client = new HttpClient())
{
var response = Client.GetAsync(url).Result;
if (response.IsSuccessStatusCode)
{
var layer = new GeoJsonLayer(googleMap, new JSONObject(response.Content.ReadAsStringAsync().Result));
this.RunOnUiThread(() =>
{
AddGeoJsonLayerToMap(layer);
});
}
}
}).ConfigureAwait(false);
}
protected override void startDemo(bool isRestore)
{
if (!isRestore)
{
getMap().MoveCamera(CameraUpdateFactory.NewLatLngZoom(new LatLng(51.403186, -0.126446), 10));
}
// Shared object managers - used to support multiple layer types on the map simultaneously
// [START maps_multilayer_demo_init1]
MarkerManager markerManager = new MarkerManager(getMap());
//GroundOverlayManager groundOverlayManager = new GroundOverlayManager(getMap());
//PolygonManager polygonManager = new PolygonManager(getMap());
//PolylineManager polylineManager = new PolylineManager(getMap());
// [END maps_multilayer_demo_init1]
// Add clustering
// [START maps_multilayer_demo_init2]
ClusterManager clusterManager = new ClusterManager(this, getMap(), markerManager);
// [END maps_multilayer_demo_init2]
getMap().SetOnCameraIdleListener(clusterManager);
addClusterItems(clusterManager);
// Add GeoJSON from resource
try
{
var geoJsonOnFeatureClickListener = new GeoJsonOnFeatureClickListener(this);
// GeoJSON polyline
// [START maps_multilayer_demo_init3]
GeoJsonLayer geoJsonLineLayer = new GeoJsonLayer(getMap(), Resource.Raw.south_london_line_geojson, this);//, markerManager, polygonManager, polylineManager, groundOverlayManager);
// [END maps_multilayer_demo_init3]
// Make the line red
GeoJsonLineStringStyle geoJsonLineStringStyle = new GeoJsonLineStringStyle();
geoJsonLineStringStyle.Color = Color.Red;
foreach (GeoJsonFeature f in geoJsonLineLayer.Features.ToEnumerable())
{
f.LineStringStyle = geoJsonLineStringStyle;
}
geoJsonLineLayer.AddLayerToMap();
geoJsonLineLayer.SetOnFeatureClickListener(geoJsonOnFeatureClickListener);
// GeoJSON polygon
GeoJsonLayer geoJsonPolygonLayer = new GeoJsonLayer(getMap(), Resource.Raw.south_london_square_geojson, this);//, markerManager, polygonManager, polylineManager, groundOverlayManager);
// Fill it with red
GeoJsonPolygonStyle geoJsonPolygonStyle = new GeoJsonPolygonStyle();
geoJsonPolygonStyle.FillColor = Color.Red;
foreach (GeoJsonFeature f in geoJsonPolygonLayer.Features.ToEnumerable())
{
f.PolygonStyle = geoJsonPolygonStyle;
}
geoJsonPolygonLayer.AddLayerToMap();
geoJsonPolygonLayer.SetOnFeatureClickListener(geoJsonOnFeatureClickListener);
}
catch (Java.IO.IOException e)
{
Log.Error(TAG, "GeoJSON file could not be read");
}
catch (JSONException e)
{
Log.Error(TAG, "GeoJSON file could not be converted to a JSONObject");
}
// Add KMLs from resources
try
{
var kmlLayerOnFeatureClickListener = new KmlLayerOnFeatureClickListener(this);
// KML Polyline
// [START maps_multilayer_demo_init4]
KmlLayer kmlPolylineLayer = new KmlLayer(getMap(), Resource.Raw.south_london_line_kml, this);//, markerManager, polygonManager, polylineManager, groundOverlayManager, null);
// [END maps_multilayer_demo_init4]
// [START maps_multilayer_demo_init6]
kmlPolylineLayer.AddLayerToMap();
kmlPolylineLayer.SetOnFeatureClickListener(kmlLayerOnFeatureClickListener);
// [END maps_multilayer_demo_init6]
// KML Polygon
KmlLayer kmlPolygonLayer = new KmlLayer(getMap(), Resource.Raw.south_london_square_kml, this);//, markerManager, polygonManager, polylineManager, groundOverlayManager, null);
kmlPolygonLayer.AddLayerToMap();
kmlPolygonLayer.SetOnFeatureClickListener(kmlLayerOnFeatureClickListener);
}
catch (XmlPullParserException e)
{
e.PrintStackTrace();
}
catch (Java.IO.IOException e)
{
e.PrintStackTrace();
}
// Unclustered marker - instead of adding to the map directly, use the MarkerManager
// [START maps_multilayer_demo_init5]
MarkerManager.Collection markerCollection = markerManager.NewCollection();
markerCollection.AddMarker(new MarkerOptions()
.SetPosition(new LatLng(51.150000, -0.150032))
.SetIcon(BitmapDescriptorFactory.DefaultMarker(BitmapDescriptorFactory.HueAzure))
.SetTitle("Unclustered marker"));
// [END maps_multilayer_demo_init5]
// [START maps_multilayer_demo_init7]
markerCollection.SetOnMarkerClickListener(this);
// [END maps_multilayer_demo_init7]
}
public void AddKML()
{
GeoJsonLayer layer = new GeoJsonLayer(gmap, Resource.Raw.jsonFile, Android.App.Application.Context);
layer.AddLayerToMap();
}
