百度地图总结第四篇之路线规划功能

线路规划：
今天总结的有四种路线方案，分别是驾车、公交(通从)、步行(同城)、骑行。(自3.7.0起，新增骑行线路规划功能)
好了下面我们来看下吧，这里的代码有点多，我在本篇结束后，会给出github地址，以便参考(这里基本也是demo里面的代码)。
公交线路规化：
第一步，创建公交线路规划检索实例；

mSearch = RoutePlanSearch.newInstance();

第二步，创建公交线路规划检索监听者；

OnGetRoutePlanResultListener listener = new OnGetRoutePlanResultListener() {  
    public void onGetWalkingRouteResult(WalkingRouteResult result) {  
        // 
    }  
    public void onGetTransitRouteResult(TransitRouteResult result) {  
        if (result == null || result.error != SearchResult.ERRORNO.NO_ERROR) {  
            Toast.makeText(RoutePlanDemo.this, "抱歉，未找到结果", Toast.LENGTH_SHORT).show();  
        }  
        if (result.error == SearchResult.ERRORNO.AMBIGUOUS_ROURE_ADDR) {  
            //起终点或途经点地址有岐义，通过以下接口获取建议查询信息 
            //result.getSuggestAddrInfo() 
            return;  
        }  
        if (result.error == SearchResult.ERRORNO.NO_ERROR) {  
            TransitRouteOverlay overlay = new MyTransitRouteOverlay(mBaidumap);  
            mBaidumap.setOnMarkerClickListener(overlay);  
            overlay.setData(result.getRouteLines().get(0));  
            overlay.addToMap();  
            overlay.zoomToSpan();  
        }  
    }  
    public void onGetDrivingRouteResult(DrivingRouteResult result) {  
        // 
    }  
};

第三步，设置公交线路规划检索监听者；

mSearch.setOnGetRoutePlanResultListener(listener);

第四步，准备检索起、终点信息；

PlanNode stNode = PlanNode.withCityNameAndPlaceName("北京", "龙泽"); 
PlanNode enNode = PlanNode.withCityNameAndPlaceName("北京", "西单");

第五步，发起公交线路规划检索；

mSearch.transitSearch((new TransitRoutePlanOption())  
    .from(stNode)  
    .city("北京")  
    .to(enNode));

第六步，释放检索实例；

mSearch.destory();

其他的三种路线规划的大致步奏和公交路线大致相同，可以参考下。
这里我们就直接上代码了（里面做了解释）：

package com.example.mylocation;


import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.BitmapDescriptor;
import com.baidu.mapapi.map.BitmapDescriptorFactory;
import com.baidu.mapapi.map.InfoWindow;
import com.baidu.mapapi.map.MapPoi;
import com.baidu.mapapi.map.MapStatusUpdateFactory;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.model.LatLng;

import com.baidu.mapapi.search.core.RouteLine;
import com.baidu.mapapi.search.core.SearchResult;
import com.baidu.mapapi.search.route.BikingRouteLine;
import com.baidu.mapapi.search.route.BikingRoutePlanOption;
import com.baidu.mapapi.search.route.BikingRouteResult;
import com.baidu.mapapi.search.route.DrivingRouteLine;
import com.baidu.mapapi.search.route.DrivingRoutePlanOption;
import com.baidu.mapapi.search.route.DrivingRouteResult;
import com.baidu.mapapi.search.route.OnGetRoutePlanResultListener;
import com.baidu.mapapi.search.route.PlanNode;
import com.baidu.mapapi.search.route.RoutePlanSearch;
import com.baidu.mapapi.search.route.TransitRouteLine;
import com.baidu.mapapi.search.route.TransitRoutePlanOption;
import com.baidu.mapapi.search.route.TransitRouteResult;
import com.baidu.mapapi.search.route.WalkingRouteLine;
import com.baidu.mapapi.search.route.WalkingRoutePlanOption;
import com.baidu.mapapi.search.route.WalkingRouteResult;
import com.example.mylocation.overly.BikingRouteOverlay;
import com.example.mylocation.overly.DrivingRouteOverlay;
import com.example.mylocation.overly.OverlayManager;
import com.example.mylocation.overly.TransitRouteOverlay;
import com.example.mylocation.overly.WalkingRouteOverlay;

/** * 此demo用来展示如何进行驾车、步行、公交路线搜索并在地图使用RouteOverlay、TransitOverlay绘制 * 同时展示如何进行节点浏览并弹出泡泡 */
public class RoutePlanDemo extends AppCompatActivity implements BaiduMap.OnMapClickListener, OnGetRoutePlanResultListener {
    // 浏览路线节点相关
    Button mBtnPre = null; // 上一个节点
    Button mBtnNext = null; // 下一个节点
    int nodeIndex = -1; // 节点索引,供浏览节点时使用
    RouteLine route = null;  //路线
    OverlayManager routeOverlay = null;  //该类提供一个能够显示和管理多个Overlay的基类
    boolean useDefaultIcon = false;  //
    private TextView popupText = null; // 泡泡view

    // 地图相关，使用继承MapView的MyRouteMapView目的是重写touch事件实现泡泡处理
    // 如果不处理touch事件，则无需继承，直接使用MapView即可
    MapView mMapView = null;    // 地图View
    BaiduMap mBaidumap = null;
    // 搜索相关
    RoutePlanSearch mSearch = null;    // 搜索模块，也可去掉地图模块独立使用

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_routeplan);
        CharSequence titleLable = "路线规划功能";
        setTitle(titleLable);
        // 初始化地图
        mMapView = (MapView) findViewById(R.id.map);
        mBaidumap = mMapView.getMap();
        mBtnPre = (Button) findViewById(R.id.pre);
        mBtnNext = (Button) findViewById(R.id.next);
        mBtnPre.setVisibility(View.INVISIBLE);
        mBtnNext.setVisibility(View.INVISIBLE);
        // 地图点击事件处理
        mBaidumap.setOnMapClickListener(this);
        // 初始化搜索模块，注册事件监听
        mSearch = RoutePlanSearch.newInstance();
        mSearch.setOnGetRoutePlanResultListener(this);
    }

    /** * 发起路线规划搜索示例 * * @param v */
    public void searchButtonProcess(View v) {
        // 重置浏览节点的路线数据
        route = null;
        mBtnPre.setVisibility(View.INVISIBLE);
        mBtnNext.setVisibility(View.INVISIBLE);
        mBaidumap.clear();
        // 处理搜索按钮响应
        EditText editSt = (EditText) findViewById(R.id.start);
        EditText editEn = (EditText) findViewById(R.id.end);
        // 设置起终点信息，对于tranist search 来说，城市名无意义
        PlanNode stNode = PlanNode.withCityNameAndPlaceName("北京", editSt.getText().toString());
        PlanNode enNode = PlanNode.withCityNameAndPlaceName("北京", editEn.getText().toString());

        // 实际使用中请对起点终点城市进行正确的设定
        if (v.getId() == R.id.drive) {
            //驾车行驶
            mSearch.drivingSearch((new DrivingRoutePlanOption())
                    .from(stNode).to(enNode));
        } else if (v.getId() == R.id.transit) {
            //公交行驶
            mSearch.transitSearch((new TransitRoutePlanOption())
                    .from(stNode).city("北京").to(enNode));
        } else if (v.getId() == R.id.walk) {
            //步行
            mSearch.walkingSearch((new WalkingRoutePlanOption())
                    .from(stNode).to(enNode));
        } else if (v.getId() == R.id.bike) {
            //骑行
            mSearch.bikingSearch((new BikingRoutePlanOption())
                    .from(stNode).to(enNode));
        }
    }

    /** * 节点浏览示例 * * @param v */
    public void nodeClick(View v) {
        if (route == null || route.getAllStep() == null) {
            return;
        }
        if (nodeIndex == -1 && v.getId() == R.id.pre) {
            return;
        }
        // 设置节点索引
        if (v.getId() == R.id.next) {
            if (nodeIndex < route.getAllStep().size() - 1) {
                nodeIndex++;
            } else {
                return;
            }
        } else if (v.getId() == R.id.pre) {
            if (nodeIndex > 0) {
                nodeIndex--;
            } else {
                return;
            }
        }
        // 获取节结果信息
        LatLng nodeLocation = null;  //经纬度
        String nodeTitle = null;  //节点title(驾程信息)
        Object step = route.getAllStep().get(nodeIndex);
        if (step instanceof DrivingRouteLine.DrivingStep) {
            //驾车
            nodeLocation = ((DrivingRouteLine.DrivingStep) step).getEntrance().getLocation();
            nodeTitle = ((DrivingRouteLine.DrivingStep) step).getInstructions();
        } else if (step instanceof WalkingRouteLine.WalkingStep) {
            //步行
            nodeLocation = ((WalkingRouteLine.WalkingStep) step).getEntrance().getLocation();
            nodeTitle = ((WalkingRouteLine.WalkingStep) step).getInstructions();
        } else if (step instanceof TransitRouteLine.TransitStep) {
            //公交
            nodeLocation = ((TransitRouteLine.TransitStep) step).getEntrance().getLocation();
            nodeTitle = ((TransitRouteLine.TransitStep) step).getInstructions();
        } else if (step instanceof BikingRouteLine.BikingStep) {
            //骑行
            nodeLocation = ((BikingRouteLine.BikingStep) step).getEntrance().getLocation();
            nodeTitle = ((BikingRouteLine.BikingStep) step).getInstructions();
        }

        if (nodeLocation == null || nodeTitle == null) {
            return;
        }
        // 移动节点至中心
        mBaidumap.setMapStatus(MapStatusUpdateFactory.newLatLng(nodeLocation));
        // show popup
        //这个是在每次点击左或者右(也就是前后节点，这个时候就会在站点的上方弹出一个infowindow,显示路线换成信息)
        popupText = new TextView(RoutePlanDemo.this);
        popupText.setBackgroundResource(R.mipmap.popup);
        popupText.setTextColor(0xFF000000);
        popupText.setText(nodeTitle);
        mBaidumap.showInfoWindow(new InfoWindow(popupText, nodeLocation, 0));

    }

    /** * 切换路线图标，刷新地图使其生效 * 注意： 起终点图标使用中心对齐. */
    public void changeRouteIcon(View v) {
        if (routeOverlay == null) {
            return;
        }
        if (useDefaultIcon) {
            ((Button) v).setText("自定义起终点图标");
            Toast.makeText(this,
                    "将使用系统起终点图标",
                    Toast.LENGTH_SHORT).show();

        } else {
            ((Button) v).setText("系统起终点图标");
            Toast.makeText(this,
                    "将使用自定义起终点图标",
                    Toast.LENGTH_SHORT).show();

        }
        useDefaultIcon = !useDefaultIcon;
        routeOverlay.removeFromMap();  //将所有overlay从地图中溢出
        routeOverlay.addToMap();  //添加
    }


    @Override
    protected void onRestoreInstanceState(Bundle savedInstanceState) {
        super.onRestoreInstanceState(savedInstanceState);
    }

    /** * 得到步行路线的结果 * @param result */
    @Override
    public void onGetWalkingRouteResult(WalkingRouteResult result) {
        if (result == null || result.error != SearchResult.ERRORNO.NO_ERROR) {
            Toast.makeText(RoutePlanDemo.this, "抱歉，未找到结果", Toast.LENGTH_SHORT).show();
        }
        if (result.error == SearchResult.ERRORNO.AMBIGUOUS_ROURE_ADDR) {
            // 起终点或途经点地址有岐义，通过以下接口获取建议查询信息
            // result.getSuggestAddrInfo()
            return;
        }
        if (result.error == SearchResult.ERRORNO.NO_ERROR) {
            nodeIndex = -1;
            mBtnPre.setVisibility(View.VISIBLE);
            mBtnNext.setVisibility(View.VISIBLE);
            route = result.getRouteLines().get(0);
            WalkingRouteOverlay overlay = new MyWalkingRouteOverlay(mBaidumap);
            mBaidumap.setOnMarkerClickListener(overlay);
            routeOverlay = overlay;
            //设置路线数据
            overlay.setData(result.getRouteLines().get(0));
            overlay.addToMap();  //将所有overlay添加到地图中
            overlay.zoomToSpan();//缩放地图
        }

    }

    /** * 得到公交车的驾驶路线 * @param result */
    @Override
    public void onGetTransitRouteResult(TransitRouteResult result) {

        if (result == null || result.error != SearchResult.ERRORNO.NO_ERROR) {
            Toast.makeText(RoutePlanDemo.this, "抱歉，未找到结果", Toast.LENGTH_SHORT).show();
        }
        if (result.error == SearchResult.ERRORNO.AMBIGUOUS_ROURE_ADDR) {
            // 起终点或途经点地址有岐义，通过以下接口获取建议查询信息
            // result.getSuggestAddrInfo()
            return;
        }
        if (result.error == SearchResult.ERRORNO.NO_ERROR) {
            nodeIndex = -1;
            mBtnPre.setVisibility(View.VISIBLE);
            mBtnNext.setVisibility(View.VISIBLE);
            route = result.getRouteLines().get(0);
            TransitRouteOverlay overlay = new MyTransitRouteOverlay(mBaidumap);
            mBaidumap.setOnMarkerClickListener(overlay);
            routeOverlay = overlay;
            //设置路线数据
            overlay.setData(result.getRouteLines().get(0));
            overlay.addToMap();  //将所有overlay添加到地图中
            overlay.zoomToSpan();//缩放地图
        }
    }

    /** * 得到驾车路线 * @param result */
    @Override
    public void onGetDrivingRouteResult(DrivingRouteResult result) {
        if (result == null || result.error != SearchResult.ERRORNO.NO_ERROR) {
            Toast.makeText(RoutePlanDemo.this, "抱歉，未找到结果", Toast.LENGTH_SHORT).show();
        }
        if (result.error == SearchResult.ERRORNO.AMBIGUOUS_ROURE_ADDR) {
            // 起终点或途经点地址有岐义，通过以下接口获取建议查询信息
            // result.getSuggestAddrInfo()
            return;
        }
        if (result.error == SearchResult.ERRORNO.NO_ERROR) {
            nodeIndex = -1;
            mBtnPre.setVisibility(View.VISIBLE);
            mBtnNext.setVisibility(View.VISIBLE);
            route = result.getRouteLines().get(0);
            DrivingRouteOverlay overlay = new MyDrivingRouteOverlay(mBaidumap);
            routeOverlay = overlay;
            mBaidumap.setOnMarkerClickListener(overlay);
            overlay.setData(result.getRouteLines().get(0));  //设置路线数据
            overlay.addToMap(); //将所有overlay添加到地图中
            overlay.zoomToSpan();//缩放地图
        }
    }

    /** * 得到步行的路线 * * @param bikingRouteResult */
    @Override
    public void onGetBikingRouteResult(BikingRouteResult bikingRouteResult) {
        if (bikingRouteResult == null || bikingRouteResult.error != SearchResult.ERRORNO.NO_ERROR) {
            Toast.makeText(RoutePlanDemo.this, "抱歉，未找到结果", Toast.LENGTH_SHORT).show();
        }
        if (bikingRouteResult.error == SearchResult.ERRORNO.AMBIGUOUS_ROURE_ADDR) {
            // 起终点或途经点地址有岐义，通过以下接口获取建议查询信息
            // result.getSuggestAddrInfo()
            return;
        }
        if (bikingRouteResult.error == SearchResult.ERRORNO.NO_ERROR) {
            nodeIndex = -1;
            mBtnPre.setVisibility(View.VISIBLE);
            mBtnNext.setVisibility(View.VISIBLE);
            route = bikingRouteResult.getRouteLines().get(0);
            BikingRouteOverlay overlay = new MyBikingRouteOverlay(mBaidumap);
            routeOverlay = overlay;
            mBaidumap.setOnMarkerClickListener(overlay);
            overlay.setData(bikingRouteResult.getRouteLines().get(0));//设置路线数据
            overlay.addToMap();//将所有overlay添加到地图中
            overlay.zoomToSpan(); //缩放地图
        }
    }

    /** * 用于显示一条驾车路线的overlay，自3.4.0版本起可实例化多个添加在地图中显示，当数据中包含路况数据时，则默认使用路况纹理分段绘制 */
    // 定制RouteOverly
    private class MyDrivingRouteOverlay extends DrivingRouteOverlay {

        public MyDrivingRouteOverlay(BaiduMap baiduMap) {
            super(baiduMap);
        }

        @Override
        public BitmapDescriptor getStartMarker() {
            if (useDefaultIcon) {
                return BitmapDescriptorFactory.fromResource(R.mipmap.icon_st);
            }
            return null;
        }

        @Override
        public BitmapDescriptor getTerminalMarker() {
            if (useDefaultIcon) {
                return BitmapDescriptorFactory.fromResource(R.mipmap.icon_en);
            }
            return null;
        }
    }

    /** * 用于显示步行路线的overlay，自3.4.0版本起可实例化多个添加在地图中显示 */
    private class MyWalkingRouteOverlay extends WalkingRouteOverlay {

        public MyWalkingRouteOverlay(BaiduMap baiduMap) {
            super(baiduMap);
        }

        @Override
        public BitmapDescriptor getStartMarker() {
            if (useDefaultIcon) {
                return BitmapDescriptorFactory.fromResource(R.mipmap.icon_st);
            }
            return null;
        }

        @Override
        public BitmapDescriptor getTerminalMarker() {
            if (useDefaultIcon) {
                return BitmapDescriptorFactory.fromResource(R.mipmap.icon_en);
            }
            return null;
        }
    }

    /** * 用于显示换乘路线的Overlay，自3.4.0版本起可实例化多个添加在地图中显示 */
    private class MyTransitRouteOverlay extends TransitRouteOverlay {

        public MyTransitRouteOverlay(BaiduMap baiduMap) {
            super(baiduMap);
        }

        @Override
        public BitmapDescriptor getStartMarker() {
            if (useDefaultIcon) {
                return BitmapDescriptorFactory.fromResource(R.mipmap.icon_st);
            }
            return null;
        }

        @Override
        public BitmapDescriptor getTerminalMarker() {
            if (useDefaultIcon) {
                return BitmapDescriptorFactory.fromResource(R.mipmap.icon_en);
            }
            return null;
        }
    }

    /** * 用于显示骑行路线的Overlay */
    private class MyBikingRouteOverlay extends BikingRouteOverlay {
        public  MyBikingRouteOverlay(BaiduMap baiduMap) {
            super(baiduMap);
        }

        @Override
        public BitmapDescriptor getStartMarker() {
            if (useDefaultIcon) {
                return BitmapDescriptorFactory.fromResource(R.mipmap.icon_st);
            }
            return null;
        }

        @Override
        public BitmapDescriptor getTerminalMarker() {
            if (useDefaultIcon) {
                return BitmapDescriptorFactory.fromResource(R.mipmap.icon_en);
            }
            return null;
        }

    }

    @Override
    public void onMapClick(LatLng point) {
        mBaidumap.hideInfoWindow();
    }

    @Override
    public boolean onMapPoiClick(MapPoi poi) {
        return false;
    }

    @Override
    protected void onPause() {
        mMapView.onPause();
        super.onPause();
    }

    @Override
    protected void onResume() {
        mMapView.onResume();
        super.onResume();
    }

    @Override
    protected void onDestroy() {
        mSearch.destroy();
        mMapView.onDestroy();
        super.onDestroy();
    }

}

我们来看下路线截图：

由于用到了其他的类，这几个类在百度地图D:\迅雷下载\BaiduMap_AndroidSDK_All\BaiduMap_AndroidSDK_v3.7.1\BaiduMap_AndroidSDK_v3.7.1_Sample\BaiduMap_AndroidSDK_v3.7.1_Sample\BaiduMapsApiASDemo\app\src\main\java\com\baidu\mapapi\overlayutil这个目录下：
这里上传github地址，方便参考：https://github.com/wuyinlei/BaiDuMap