// it's event When User Tap On List To Draw The Selected Polygon
private void DrawPolygonById(object sender, ItemTappedEventArgs e)
{
listPolygon.SelectedItem = null;
Models.Polygon polygon = e.Item as Models.Polygon;
Polygons = JsonConvert.DeserializeObject <FeatureCollection>(polygon.Coordinates);
DrawPolygon();
var pin = new Pin
{
Type = PinType.Place,
Position = new Position(polygon.Latitude, polygon.Longitude),
Label = " Cliked ",
Address = polygon.Latitude + " X " + polygon.Longitude,
};
pin.Position = new Position(polygon.Latitude, polygon.Longitude);
map.Pins.Add(pin);
tappedPage.CurrentPage = MapContent;
}
private async void Map_OnTap(object sender, TapEventArgs e)
{
Position _position = new Position();
_position = e.Position;
var pin = new Pin
{
Type = PinType.Place,
Position = e.Position,
Label = " Cliked ",
Address = e.Position.Latitude + " X " + e.Position.Latitude,
};
// Get Coordinates Polygon as json string then Deserialize it
var jsonCoordinates = new Geojson().ReadGeoJson(pin);
Polygons = JsonConvert.DeserializeObject <FeatureCollection>(jsonCoordinates);
if (Polygons == null)
{
DependencyService.Get <SnackBar>().ShowSnackBar("There is no detected area");
return;
}
map.Pins.Add(pin);
DrawPolygon();
string result = await DisplayPromptAsync("Info", "if you want to save this area ? enter name it",
"OK", "CANCEL", keyboard : Keyboard.Text);
if (result != null)
{
Models.Polygon polygon = new Models.Polygon();
polygon.PolygonName = result;
polygon.Coordinates = jsonCoordinates;
polygon.Latitude = _position.Latitude;
polygon.Longitude = _position.Longitude;
polygonViewModel.AddPolygon(polygon);
listPolygon.ItemsSource = null;
listPolygon.ItemsSource = polygonViewModel.Polygons;
}
}
