WebStyleSymbol 可用于设置 FeatureLayer 和 GraphicsLayer 的样式。
此示例演示如何使用 2D MapView 中的 UniqueValueRenderer 使用 2D Web 样式符号设置要素图层的样式。
下面的代码片段创建了一个包含 25 个符号名称的数组，将在示例中使用。符号名称是 2D Web 样式符号 中的知名名称。然后，它遍历符号名称并在要素图层的 UniqueValueRenderer 上创建一个值——符号对数组作为 uniqueValueInfos。
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const symbolCats = [
"post-office",
"atm",
"place-of-worship",
"park",
"school",
"hospital",
"fire-station",
"playground",
"shopping-center",
"campground",
"golf-course",
"library",
"city-hall",
"beach",
"police-station",
"subway-station",
"train-station",
"cemetery",
"trail",
"radio-tower",
"museum",
"airport",
"live-music-venue",
"sports-complex",
"ferry"
];
rendererInfos = symbolCats.map((symCat) => {
return {
value: symCat,
symbol: {
type: "web-style",
name: symCat,
styleName: "Esri2DPointSymbolsStyle"
},
label: symCat
};
});
更多可在 2D MapView 中使用的开箱即用的 web 样式符号可以在引导页 GeoScene Web 样式符号（2D）中找到。
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