| I have a simple GraphicsOverlay symbol, how do I change the color of it on event triggered? My sample code shown below: |
public MainPageViewModel() {
// Create new Map without basemap
Map = new Map(SpatialReference.Create(102100));
// Add the tile basemap only after the map has loaded so it doesn't block the map if offline
Map.Loaded += (sender, e) => { Map.Basemap = Basemap.CreateImagery(); };
// Setup the graphics layers
GraphicsOverlay editGraphics = new GraphicsOverlay();
editGraphics.Id = "MyGraphics";
GraphicsOverlays.Add(editGraphics);
// Add some test graphics
SimpleMarkerSymbol pointSymbol = new SimpleMarkerSymbol(SimpleMarkerSymbolStyle.Circle, SystemColor.Red, 25);
var point = new MapPoint(0, 0);
Graphic mapPoint = new Graphic(point, pointSymbol);
GraphicsOverlays["MyGraphics"].Graphics.Add(mapPoint);
}
public ICommand ColorButtonCommand { get; set; }
public void ColorButtonTapped() {
// Handle color code goes in here
// pointSymbol.Color = SystemColor.Gray;
}
public bool CanColorButtonTapped()
{
return true;
}
I thought of declaring my SimpleMarkerSymbol pointSymbol variable as a global variable, and simply change color like what I did in my commented out code pointSymbol.Color = SystemColor.Gray, But I think it is a bad approach, there should be a easy and clean way to handle it. Can Anyone help me on this?
