public async Task <Polyline> AddRoadPolyline(int MandadoID)
{
string serial = await data.GetPolyline(MandadoID);
Java.Util.ArrayList points = new Java.Util.ArrayList(DecodePolyline(serial));
PolylineOptions options = new PolylineOptions();
options.AddAll(points);
Polyline ans = map.AddPolyline(options);
return(ans);
}
private void CreateDashedLine(List <LatLng> coords)
{
for (var i = 0; i < (coords.Count - 1); i += 2)
{
var nextLine = new ArrayList();
nextLine.Add(coords[i]);
nextLine.Add(coords[i + 1]);
var polyline = new PolylineOptions();
polyline.AddAll(nextLine);
polyline.InvokeWidth(2);
polyline.InvokeColor(Color.Gray);
mapboxMap.AddPolyline(polyline);
}
}
private Sdk.Annotations.Annotation AddAnnotation(Annotation at)
{
Sdk.Annotations.Annotation options = null;
if (at is PointAnnotation)
{
var marker = new MarkerOptions();
marker.SetTitle(at.Title);
marker.SetSnippet(at.Title);
marker.SetPosition(((PointAnnotation)at).Coordinate.ToLatLng());
options = map.AddMarker(marker);
}
else if (at is PolylineAnnotation)
{
var polyline = at as PolylineAnnotation;
if (polyline.Coordinates?.Count() == 0)
{
return(null);
}
var notifyCollection = polyline.Coordinates as INotifyCollectionChanged;
if (notifyCollection != null)
{
notifyCollection.CollectionChanged += (s, e) =>
{
if (e.Action == NotifyCollectionChangedAction.Add)
{
if (_annotationDictionaries.ContainsKey(at.Id))
{
var poly = _annotationDictionaries[at.Id] as Polyline;
poly.AddPoint(polyline.Coordinates.ElementAt(e.NewStartingIndex).ToLatLng());
}
else
{
var coords = new ArrayList();
for (var i = 0; i < polyline.Coordinates.Count(); i++)
{
coords.Add(polyline.Coordinates.ElementAt(i).ToLatLng());
}
var polylineOpt = new PolylineOptions();
polylineOpt.Polyline.Width = Context.ToPixels(1);
polylineOpt.Polyline.Color = Android.Graphics.Color.Blue;
polylineOpt.AddAll(coords);
options = map.AddPolyline(polylineOpt);
_annotationDictionaries.Add(at.Id, options);
}
}
else if (e.Action == NotifyCollectionChangedAction.Remove)
{
if (_annotationDictionaries.ContainsKey(at.Id))
{
var poly = _annotationDictionaries[at.Id] as Polyline;
poly.Points.Remove(polyline.Coordinates.ElementAt(e.OldStartingIndex).ToLatLng());
}
}
};
}
}
else if (at is MultiPolylineAnnotation)
{
var polyline = at as MultiPolylineAnnotation;
if (polyline.Coordinates == null || polyline.Coordinates.Length == 0)
{
return(null);
}
var lines = new List <PolylineOptions>();
for (var i = 0; i < polyline.Coordinates.Length; i++)
{
if (polyline.Coordinates[i].Length == 0)
{
continue;
}
var coords = new PolylineOptions();
for (var j = 0; j < polyline.Coordinates[i].Length; j++)
{
coords.Add(new LatLng(polyline.Coordinates[i][j].Lat, polyline.Coordinates[i][j].Long));
}
lines.Add(coords);
}
map.AddPolylines(lines);
}
if (options != null)
{
if (at.Id != null)
{
_annotationDictionaries.Add(at.Id, options);
}
}
return(options);
}
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
startLatlng = new LatLng(Intent.GetDoubleExtra("StartLatitude", 0), Intent.GetDoubleExtra("StartLongitude", 0));
isLine = Intent.GetBooleanExtra("isLine", false);
if (isLine)
{
endLatlng = new LatLng(Intent.GetDoubleExtra("EndLatitude", 0), Intent.GetDoubleExtra("EndLongitude", 0));
}
SetContentView(Resource.Layout.amap_layout);
//SetSupportActionBar(new Android.Support.V7.Widget.Toolbar(this));
var actionBar = SupportActionBar;
if (actionBar != null)
{
actionBar.SetHomeButtonEnabled(true);
actionBar.SetDisplayHomeAsUpEnabled(true);
}
mapView = FindViewById <MapView>(Resource.Id.map);
//AMapOptions options = new AMapOptions();
//options.InvokeCamera(new CameraPosition(latlng, 15, 0, 0));
//mapView = new MapView(this, options);
mapView.OnCreate(savedInstanceState);
if (aMap == null)
{
aMap = mapView.Map;
//设置marker
markerOption = new MarkerOptions().InvokeIcon(BitmapDescriptorFactory.DefaultMarker(BitmapDescriptorFactory.HueRed))
.InvokeTitle("施封位置").InvokeSnippet(Intent.GetStringExtra("startAddress")).InvokePosition(startLatlng).Draggable(true);
aMap.AddMarker(markerOption).ShowInfoWindow();
if (isLine)
{
//设置中心点
var update = CameraUpdateFactory.NewCameraPosition(new CameraPosition(endLatlng, 5, 0, 0));
aMap.MoveCamera(update);
//设置marker
MarkerOptions endMarkerOption = new MarkerOptions().InvokeIcon(BitmapDescriptorFactory.DefaultMarker(BitmapDescriptorFactory.HueGreen))
.InvokeTitle("拆封位置").InvokeSnippet(Intent.GetStringExtra("endAddress")).InvokePosition(endLatlng).Draggable(true);
aMap.AddMarker(endMarkerOption).ShowInfoWindow();
PolylineOptions polylineOptions = new PolylineOptions();
var laglngs = new ArrayList();
laglngs.Add(startLatlng);
laglngs.Add(endLatlng);
polylineOptions.AddAll(laglngs);
polylineOptions.InvokeWidth(10);
polylineOptions.InvokeColor(Color.Argb(255, 0, 205, 205));
polylineOptions.Visible(true);
var polyline = aMap.AddPolyline(polylineOptions);
polyline.Visible = true;
var endupdate = CameraUpdateFactory.NewCameraPosition(new CameraPosition(endLatlng, 10, 0, 0));
aMap.MoveCamera(update);
}
else
{
//设置中心点
var update = CameraUpdateFactory.NewCameraPosition(new CameraPosition(startLatlng, 15, 0, 0));
aMap.MoveCamera(update);
}
}
}
