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场景图

开放图层：通过图层方式将信息直接叠加在底图上展示，进而达到不同信息需求在图面可灵活透出。
图层数据：可以是对底图数据通过一定条件提取后的新一层的数据，也可以来自于第三方数据。

目前地图上的交通事件扎标，属开放图层。点击图标，可获取事件详情：

$\"image.png\"$

开放图层事件包括：封路、拥堵、车祸、施工、在建、新能源充电站

开放图层支持显示多种类型的图层，默认不显示，需要调用接口显示对应的图层，调用示例见下方调用示例

时序

后序文档

获取交通事件详情

关键参数

9003: 除了封路+在建之外的其他类型的事件,包括:拥堵,车祸,施工等

final int com.autonavi.gbl.map.layer.model.OpenLayerID.OpenLayerID9003 = 9003

9004: 9000004=9000001+9000002 官方线事件（点+线）事件包括封路+399在建

final int com.autonavi.gbl.map.layer.model.OpenLayerID.OpenLayerID9004 = 9004

9005：对应服务9000005=9000003+9000004全量事件

final int com.autonavi.gbl.map.layer.model.OpenLayerID.OpenLayerIDRouteTraffic = 9005

200001：对应服务2001，表示新能源充电站图层

final int com.autonavi.gbl.map.layer.model.OpenLayerID.OpenLayerIDChargingStation = 200001

核心接口

是否显示开放图层

void com.autonavi.gbl.map.showOpenLayer(@OpenLayerID.OpenLayerID1 int nLayerID, boolean bShow)

添加开放图层

void com.autonavi.gbl.map.OperatorBusiness.appendOpenLayer(byte[] pBuffer)

删除图层

void com.autonavi.gbl.map.OperatorBusiness.deleteOpenLayerr(@OpenLayerID.OpenLayerID1 int nLayerID)

说明：函数详情，请复制函数名称到在线API搜索

调用示例

// mapview 初始化\n...\n\n// 添加开放图层\nstring layerStr = "{\\"update_period\\": 300, \\"cachemode\\":1, \\"url\\": \\"http://maps.amap.com/ws/mps/lyrdata/ugc\\",\\"bounds\\":[{\\"y1\\": 122421247,\\"x2\\": 235405312, \\"x1\\": 188874751, \\"y2\\": 85065727}], \\"sublyr\\": [{\\"type\\": 4, \\"sid\\": 9000004, \\"zlevel\\": 2}], \\"minzoom\\": 6, \\"maxzoom\\": 19, \\"id\\": 9001}";\nbyte[] layerBytes = layerStr.getBytes();\nmapview.getOperatorBusiness().appendOpenLayer(layerBytes);\n\n// 显示开放图层\nmapview.getOperatorBusiness().showOpenLayer(OpenLayerID.OpenLayerID9003, true);\n\n//隐藏开放图层\nmapview.getOperatorBusiness().showOpenLayer(OpenLayerID.OpenLayerID9003, false);\n\n//删除开放图层\nmapview.getOperatorBusiness().deleteOpenLayer(OpenLayerID.OpenLayerID9003);

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