高德地图API文档解读：Java代码实现公交车在线运行状态查询

import com.amap.api.maps.model.LatLng;
import com.amap.api.services.busline.BusLineQuery;
import com.amap.api.services.busline.BusLineSearch;
import com.amap.api.services.busline.BusLineSearch.OnBusLineSearchListener;
import com.amap.api.services.busline.BusLineItem;
import com.amap.api.services.busline.BusLineResult;

public class BusLineSearchExample {
    private static final String KEY = "your_amap_api_key";

    public static void main(String[] args) {
        // 初始化查询对象
        BusLineQuery query = new BusLineQuery("bus_line_id", BusLineQuery.SearchType.BY_LINE_ID, "city_code");
        // 设置查询结果监听器
        BusLineSearch search = new BusLineSearch(context, query);
        search.setOnBusLineSearchListener(new OnBusLineSearchListener() {
            @Override
            public void onBusLineSearched(BusLineResult result, int rCode) {
                if (rCode == 1000) {
                    // 查询成功，处理结果
                    for (BusLineItem item : result.getBusLines()) {
                        // 获取公交车位置信息
                        LatLng position = item.getBusStations().get(item.getBusStations().size() - 1).getLatLonPoint();
                        // 处理位置信息
                        // ...
                    }
                } else {
                    // 查询失败，处理错误信息
                    // ...
                }
            }
        });
        // 发起查询
        search.searchBusLineAsyn();
    }
}