Amap API document analysis: Java implementation of transfer plan query for route planning

Amap API document analysis: Java implementation of transfer plan query for route planning

Introduction:
With the development of urban transportation and the improvement of people’s living standards, people’s requirements for travel are also getting higher and higher. is getting higher and higher, especially in big cities, different means of transportation are connected to each other, making travel more convenient. In developing applications, we often need to use map services to provide users with path planning needs, including inquiries about transfer plans.

Introduction:
Amap provides a wealth of API services, including transfer plan query for route planning. This article will introduce how to use Java language to implement transfer plan query for route planning through Amap API.

Step 1: Register an account on the Amap Open Platform
Before starting to use the Amap Map API, we need to register an account on the Amap Open Platform. After registration is completed, log in to the open platform to obtain the corresponding API Key so that you can call the corresponding API service.

Step 2: Import the Amap API SDK
In the Java project, we need to import the SDK of the Amap API so that we can use the route planning function. You can download the corresponding SDK from the official website of the Amap open platform and import it into the project.

Step 3: Implement transfer plan query for route planning
Using Amap API to implement transfer plan query for route planning mainly includes the following steps:

1. Create the Client object of the Amap API:

   import com.amap.api.services.core.AMapException;
   import com.amap.api.services.route.BusRouteResult;
   import com.amap.api.services.route.RouteSearch;
   
   RouteSearch routeSearch = new RouteSearch(context);

2. Set the starting point and destination:

   RouteSearch.FromAndTo fromAndTo = new RouteSearch.FromAndTo(
        new LatLonPoint(startLatitude, startLongitude),
        new LatLonPoint(endLatitude, endLongitude));

3. Set the parameters of the path planning:

   RouteSearch.BusRouteQuery query = new RouteSearch.BusRouteQuery(fromAndTo,
        RouteSearch.BUS_DEFAULT, //公交换乘模式，默认
        city, //城市名称
        0); //距离优先默认设置为0

4. Initiate transfer plan query for route planning:

   routeSearch.calculateBusRouteAsyn(query);

5. Process query results:

   routeSearch.setRouteSearchListener(new RouteSearch.OnRouteSearchListener() {
    @Override
    public void onBusRouteSearched(BusRouteResult busRouteResult, int i) {
        if (i == AMapException.CODE_AMAP_SUCCESS) {
            //请求成功，处理查询结果
            //可以通过busRouteResult获取到换乘方案的详细信息
        } else {
            //请求失败，处理失败结果
        }
    }
   
    @Override
    public void onDriveRouteSearched(DriveRouteResult driveRouteResult, int i) {
        //不关注其他交通工具的路径规划
    }
   
    @Override
    public void onWalkRouteSearched(WalkRouteResult walkRouteResult, int i) {
        //不关注步行的路径规划
    }
   
    @Override
    public void onRideRouteSearched(RideRouteResult rideRouteResult, int i) {
        //不关注骑行的路径规划
    }
   });

Summary:
By using the route planning transfer plan query function provided by the Amap API, we can provide users with more convenient travel plans. In this article, we introduce how to use Java language to implement transfer plan query for route planning, and give corresponding code examples. I hope that by reading this article, readers can have an understanding of the path planning function of the Amap API and be able to use it flexibly in actual development.

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