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场景图

$\"image.png\"$

注：本文描述导航前沿途服务区的获取，导航中沿途服务区的获取见高速服务区

时序图

前序文档

基础算路

关键参数

开始查找服务区的位置，相对路线起点的距离，单位: 米

long startPos

输入所需的最大个数

long maxAreaCount

核心接口

获得路径上指定位置后剩余的服务区

ArrayList<RestAreaInfo> com.autonavi.gbl.common.path.option.PathInfo.getRestAreas(long startPos, long maxAreaCount)

说明：函数详情，请复制函数名称到在线API搜索

调用示例

// 算路结果观察者\nIRouteResultObserver routeResultObserver = new IRouteResultObserver() {\n    @Override\n    public void onNewRoute(PathResultData pathResultData, ArrayList<PathInfo> pathInfoList, java.lang.Object externData) {\n        \n        /* 转线程前，这边需要特殊处理。对SDK回调回来的PathInfo对象需重新构造创建一遍 */\n        ArrayList<PathInfo> paths = new ArrayList<>();\n        for(int i=0;i<pathInfoList.size();i++){\n            PathInfo paths =new PathInfo(pathInfoList.get(i));\n            paths.add(pathInfo);\n        }\n        // 根据情况决定是否将后续处理流程转为其他线程处理，如果转线程，只需将下面示例中的HandleNewRoute函数放在指定线程执行即可\n        HandleNewRoute(pathResultData, paths);\n    }\n\n    @Override\n    public void onNewRouteError(PathResultData pathResultData, java.lang.Object externData) {\n        // code ...\n    }\n};\n\n/* UI 线程逻辑 */\nvoid HandleNewRoute(PathResultData pathResultData, ArrayList<PathInfo> paths)\n{\n   PathsMgr.getInstance().setPathsCache(paths);\n   \n  // 获取路线条数\n  long size = paths.size();\n  \n  for(int i=0; i < size; i++)\n  {\n    PathInfo pathInfo = paths.get(i);\n    if (null != pathInfo && pathInfo.isValid())\n    {  \n        ...\n    \t//获得路径上指定位置后剩余的服务区(从开始位置获取最多20个)\n\t\tArrayList<RestAreaInfo> restAreaInfos = pathInfo.getRestAreas(0, 20); \n    \t// 调用基础图层能力，绘制到路线上，需要抛线程处理，具体见图层内容\n        ...\n    }\n  }\n    \n  // 若之后业务还需使用路线 通过getPathsCache获取\n  // 若不在需当前路线时回收路线 destoryPathsCache()  \n}\n\npublic class PathsMgr {\n    public static final String TAG = "PathsMgr";\n    private ArrayList<PathInfo> mPathsCache;\n    \n    private static class SinglonHolder {\n        private static PathsMgr instance = new PathsMgr();\n    }\n\n    public static PathsMgr getInstance() {\n        return SinglonHolder.instance;\n    }\n\n    // 在UI线程缓存路线结果\n    public void setPathsCache(ArrayList<PathInfo> paths) {\n        // 清除上一次老路线缓存\n        destoryPathsCache()\n        //无效的结果不需要cache\n        if (paths == null || paths.size() <= 0) {\n            return;\n        }\n        mPathsCache = paths;\n        Logger.d(TAG,"setPathsCache:paths = {?}",paths.toString());\n    }\n    \n    // 在UI线程获取路线缓存结果\n    public ArrayList<PathInfo> getPathsCache() {\n        Logger.d(TAG,"getPathsCache:paths = {?}",mPathsCache.toString());\n        return mPathsCache;\n    }\n\n    // 不再使用当前路线时在UI线程调用，如退出路线规划页，结束真实导航\n    public void destoryPathsCache() {\n        if (mPathsCache == null || mPathsCache.size() <= 0) {\n            return;\n        }\n        Iterator<PathInfo> it = mPathsCache.iterator();\n        while(it.hasNext()){\n            PathInfo pathInfo = it.next();\n            pathInfo.delete();\n            it.remove();\n        }\n    }\n}

注：图层示例代码见《服务区扎标图层》

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