What is the method to write a piece of code in Java to display custom marker points on Baidu Map?

How to write a piece of code in Java to display custom marker points on Baidu Map

Introduction

Baidu Map is a very popular map service that provides a rich API , allowing developers to customize marker points on the map. This article will introduce how to use Java to write a piece of code to display custom marker points on Baidu Maps, and attach a code example.

Preparation work

Before we start, we need to do some preparation work:

1. Apply for a developer account on Baidu Open Platform and create an application. Get a Developer Key (AK).
2. Install the Java development environment and configure the relevant environment variables.

Code Example

The following is a sample code that uses Java code to display custom marker points on Baidu Map:

import com.baidu.mapapi.SDKInitializer;
import com.baidu.mapapi.map.*;
import com.baidu.mapapi.model.LatLng;

public class CustomMarkerDemo {

    public static void main(String[] args) {
        // 初始化地图SDK
        SDKInitializer.initialize();

        // 创建地图控件实例
        MapView mapView = new MapView();

        // 获取地图实例
        BaiduMap baiduMap = mapView.getMap();

        // 设置地图中心点和缩放级别
        LatLng center = new LatLng(39.915, 116.404);
        MapStatus.Builder builder = new MapStatus.Builder();
        builder.target(center).zoom(12);
        baiduMap.setMapStatus(MapStatusUpdateFactory.newMapStatus(builder.build()));

        // 创建自定义标记点图标
        BitmapDescriptor customMarker = BitmapDescriptorFactory.fromResource(R.drawable.custom_marker);

        // 设置标记点的位置
        LatLng point = new LatLng(39.915, 116.404);

        // 创建标记点覆盖物选项类
        MarkerOptions markerOptions = new MarkerOptions().position(point).icon(customMarker);

        // 在地图上添加标记点覆盖物
        baiduMap.addOverlay(markerOptions);
    }
}

In the above code example, we First, initialize the map SDK through the initialize method of the SDKInitializer class, and create a MapView instance as the map control. Then an instance of Baidu Map was obtained, and the center point and zoom level of the map were set. Next, we used the fromResource method of the BitmapDescriptorFactory class to create a custom marker icon, and used the MarkerOptions class to set the location and icon of the marker. Finally, add the marker point to the map by calling BaiduMap's addOverlay method.

Summary

Through the above code examples, we can see that it is very simple to display custom marker points in Baidu Maps. Developers only need to introduce relevant class libraries, create map instances and marker point coverage option classes, and then set related properties. I hope the content of this article can help you learn how to display custom markers in Baidu map development.

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