加载图标layer官方文档有介绍：
public void onMapReady(@NonNull final MapboxMap mapboxMap) {List<Feature> symbolLayerIconFeatureList = new ArrayList<>();symbolLayerIconFeatureList.add(Feature.fromGeometry(Point.fromLngLat(-57.225365, -33.213144)));symbolLayerIconFeatureList.add(Feature.fromGeometry(Point.fromLngLat(-54.14164, -33.981818)));symbolLayerIconFeatureList.add(Feature.fromGeometry(Point.fromLngLat(-56.990533, -30.583266)));mapboxMap.setStyle(new Style.Builder().fromUri("mapbox://styles/mapbox/cjf4m44iw0uza2spb3q0a7s41")// Add the SymbolLayer icon image to the map style.withImage(ICON_ID, BitmapFactory.decodeResource(BasicSymbolLayerActivity.this.getResources(), R.drawable.mapbox_marker_icon_default))// Adding a GeoJson source for the SymbolLayer icons..withSource(new GeoJsonSource(SOURCE_ID,FeatureCollection.fromFeatures(symbolLayerIconFeatureList)))// Adding the actual SymbolLayer to the map style. An offset is added that the bottom of the red
// marker icon gets fixed to the coordinate, rather than the middle of the icon being fixed to
// the coordinate point. This is offset is not always needed and is dependent on the image
// that you use for the SymbolLayer icon..withLayer(new SymbolLayer(LAYER_ID, SOURCE_ID).withProperties(iconImage(ICON_ID),iconAllowOverlap(true),iconIgnorePlacement(true))), new Style.OnStyleLoaded() {@Overridepublic void onStyleLoaded(@NonNull Style style) {// Map is set up and the style has loaded. Now you can add additional data or make other map adjustments.}});}
效果如下：
但是如果想要让这个layer动起来，比如实现跟踪位置的效果怎么办呢？比如在做一个室内定位的效果：
主要分三步：
- 准备数据
- 移除资源（图片和layer）
- 获取style实例，添加新的显示坐标
代码如下：
