在 ESRI 地图上创建符号的问题

Question

我的 MVVM 客户端应用程序从 ESRI.ArcGISRuntime.Toolkit v10.2.7.0 进入 ESRI ArcGISRuntime v100.1 时遇到问题，我用来定位停靠点的符号不是随机创建的。我将 List 传递给以下方法：

 private async void SetMapSymbols()
    {
        var previousLayer = GraphicsLayer[SEARCH_LAYER];
        GraphicsLayer.Remove(previousLayer);

        var graphicsOverlay = new GraphicsOverlay() { Id = SEARCH_LAYER };
        var graphicList = new List<Graphic>();

        int order = 0;

        foreach (ObjectInfoModel entry in ObjectList)
        {
            order++;

            if (entry.SiteGeoLat == null || entry.SiteGeoLong == null) continue;

            var pointAttribList = ConvertObjectToDictionary(entry);
            DictionaryUtility.AddItemTodictionaryAttribute(pointAttribList, ORDER_ATTRIBUTE, order.ToString());
            var geo = entry.AltSiteGeoLat != null && entry.AltSiteGeoLong != null ? WebMercatorUtility.ConvertToMercator(entry.AltSiteGeoLong.Value, entry.AltSiteGeoLat.Value) : WebMercatorUtility.ConvertToMercator(entry.SiteGeoLong.Value, entry.SiteGeoLat.Value);
            var graphic = new Graphic(
                        new MapPoint(geo.Lon, geo.Lat, new SpatialReference(SPATIAL_REFERENCE)),
                        pointAttribList,
                     string.IsNullOrEmpty(entry.Area) ? await SymbolUtility.CreateSymbols(order.ToString(), SymbolTypes.Blue, SymbolShapes.Pin) :
                                                                await SymbolUtility.CreateSymbols(order.ToString(), SymbolTypes.Red, SymbolShapes.Arrow));
            if (entry.SiteGeoTypeCode != MAPPABLE)
            {
                graphic.Symbol = string.IsNullOrEmpty(entry.Area) ? await SymbolUtility.CreateSymbols(order.ToString(), SymbolTypes.Blue, SymbolShapes.Pin2) :
                                                                             await SymbolUtility.CreateSymbols(order.ToString(), SymbolTypes.Red, SymbolShapes.Arrow2);
            }

            graphicList.Add(graphic);

        }

        graphicList.ForEach(x => graphicsOverlay.Graphics.Add(x));
        GraphicsLayer.Add(graphicsOverlay);
    }

如您所见，它等待 SymbolUtility 为列表中的每个项目创建一个符号。所以这里是那个方法：

        public static async Task<Symbol> CreateSymbols(string text, SymbolTypes type, SymbolShapes shape)
    {
        var iconPath = string.Empty;
        iconPath = string.Format(@"pack://application:,,,/Images/{0}_{1}.png", type.ToString(), shape.ToString());

        var pc = new PictureMarkerSymbol(new Uri(iconPath, UriKind.RelativeOrAbsolute));
        pc.Width = 30;
        pc.Height = 30;

        var cm = new CompositeSymbol();
        var ts = new TextSymbol()
        {
            Color = Colors.Black,
            FontStyle = FontStyle.Normal,
            FontDecoration = FontDecoration.None,
            FontFamily = "Arial",
            FontWeight = FontWeight.Bold,
            Size = 14,
            VerticalAlignment = VerticalAlignment.Middle,
            HorizontalAlignment = HorizontalAlignment.Center,
            OffsetY = shape == SymbolShapes.Arrow ? 5 : 0
        };

        ts.Text = text;
        cm.Symbols.Add(pc);
        cm.Symbols.Add(ts);

        return await Task.Factory.StartNew<Symbol>(() => { return cm; });
    }

PNG 文件与实用程序位于同一解决方案中，但不是同一项目。 发生的问题是符号不会随机呈现 PNG 部分，但总是会返回符号的文本部分。

如果有人对此有任何想法，我将不胜感激。

Answer 1

如果在图像控件中使用了图标路径，您看到图像了吗？可能是图标路径不正确或构建操作或复制到输出目录需要更改（请参阅：msdn doc）如果图标路径良好，符号是否在 CompositeSymbol 外部呈现（仅使用 PictureMarkerSymbol）？如果是，是否可以通过将 SDK 更新到 100.4 或更新 GraphicsRenderingMode 或放大/缩小地图来解决？

我无法使用以下代码重现 note.png 添加为内容，如果更新则复制。

MyMapView.Map = new Map(SpatialReferences.Wgs84);
var symbol = new CompositeSymbol();
symbol.Symbols.Add(new PictureMarkerSymbol(new Uri("pack://application:,,,/note.png")));
symbol.Symbols.Add(new TextSymbol("1", Color.Black, 10, Esri.ArcGISRuntime.Symbology.HorizontalAlignment.Center, Esri.ArcGISRuntime.Symbology.VerticalAlignment.Middle));
var overlay = new GraphicsOverlay();
overlay.Graphics.Add(new Graphic(new MapPoint(0, 0), symbol));
MyMapView.GraphicsOverlays.Add(overlay);

ArcGIS Runtime 开发人员可能会在forum 中为您提供帮助。