百度地图之添加覆盖物

r囧r小猫 2022-07-29 11:57 233阅读 0赞

### 本文主要讲解如何实现在百度地图上添加覆盖物 ###

### 1.承载数据的实体 ###

我们从服务器返回的数据部分，最终可能是个Json数组，我们需要转换为实体集合，即下面的Info.java  
我直接在实体类中声明了一个静态列表集合，模拟从服务器返回的数据Info.infos

package com.zj.map2;
    
    import java.io.Serializable;  
    import java.util.ArrayList;  
    import java.util.List;  
    
    public class Info implements Serializable  
    {
          
        private static final long serialVersionUID = -758459502806858414L;  
        /** 
         * 精度 
         */  
        private double latitude;  
        /** 
         * 纬度 
         */  
        private double longitude;  
        /** 
         * 图片ID，真实项目中可能是图片路径 
         */  
        private int imgId;  
        /** 
         * 商家名称 
         */  
        private String name;  
        /** 
         * 距离 
         */  
        private String distance;  
        /** 
         * 赞数量 
         */  
        private int zan;  
    
        public static List<Info> infos = new ArrayList<Info>();  
    
        static  
        {  
            infos.add(new Info(34.242652, 108.971171, R.drawable.a01, "英伦贵族小旅馆",  
                    "距离209米", 1456));  
            infos.add(new Info(34.242952, 108.972171, R.drawable.a02, "沙井国际洗浴会所",  
                    "距离897米", 456));  
            infos.add(new Info(34.242852, 108.973171, R.drawable.a03, "五环服装城",  
                    "距离249米", 1456));  
            infos.add(new Info(34.242152, 108.971971, R.drawable.a04, "老米家泡馍小炒",  
                    "距离679米", 1456));  
        }  
    
        public Info()  
        {  
        }  
    
        public Info(double latitude, double longitude, int imgId, String name,  
                String distance, int zan)  
        {  
            super();  
            this.latitude = latitude;  
            this.longitude = longitude;  
            this.imgId = imgId;  
            this.name = name;  
            this.distance = distance;  
            this.zan = zan;  
        }  
    
        public double getLatitude()  
        {  
            return latitude;  
        }  
    
        public void setLatitude(double latitude)  
        {  
            this.latitude = latitude;  
        }  
    
        public double getLongitude()  
        {  
            return longitude;  
        }  
    
        public void setLongitude(double longitude)  
        {  
            this.longitude = longitude;  
        }  
    
        public String getName()  
        {  
            return name;  
        }  
    
        public int getImgId()  
        {  
            return imgId;  
        }  
    
        public void setImgId(int imgId)  
        {  
            this.imgId = imgId;  
        }  
    
        public void setName(String name)  
        {  
            this.name = name;  
        }  
    
        public String getDistance()  
        {  
            return distance;  
        }  
    
        public void setDistance(String distance)  
        {  
            this.distance = distance;  
        }  
    
        public int getZan()  
        {  
            return zan;  
        }  
    
        public void setZan(int zan)  
        {  
            this.zan = zan;  
        }  
    
    }

### 在地图中添加overlay ###

/** 
         * 初始化图层 
         */  
        public void addInfosOverlay(List<Info> infos)  
        {  
            mBaiduMap.clear();  
            LatLng latLng = null;  
            OverlayOptions overlayOptions = null;  
            Marker marker = null;  
            for (Info info : infos)  
            {  
                // 位置  
                latLng = new LatLng(info.getLatitude(), info.getLongitude());  
                // 图标  
                overlayOptions = new MarkerOptions().position(latLng)  
                        .icon(mIconMaker).zIndex(5);  
                marker = (Marker) (mBaiduMap.addOverlay(overlayOptions));  
                Bundle bundle = new Bundle();  
                bundle.putSerializable("info", info);  
                marker.setExtraInfo(bundle);  
            }  
            // 将地图移到到最后一个经纬度位置  
            MapStatusUpdate u = MapStatusUpdateFactory.newLatLng(latLng);  
            mBaiduMap.setMapStatus(u);  
        }

### 为地图上的maker添加点击事件 ###

（记得生成TextView的时候，先设置背景，再设置padding，不然可能会失效~~~）

private void initMarkerClickEvent()
        {
            // 对Marker的点击
            mBaiduMap.setOnMarkerClickListener(new OnMarkerClickListener()
            {
                @Override
                public boolean onMarkerClick(final Marker marker)
                {
                    // 获得marker中的数据
                    Info info = (Info) marker.getExtraInfo().get("info");
    
                    InfoWindow mInfoWindow;
                    // 生成一个TextView用户在地图中显示InfoWindow
                    TextView location = new TextView(getApplicationContext());
                    location.setBackgroundResource(R.drawable.location_tips);
                    location.setPadding(30, 20, 30, 50);
                    location.setText(info.getName());
                    // 将marker所在的经纬度的信息转化成屏幕上的坐标
                    final LatLng ll = marker.getPosition();
                    Point p = mBaiduMap.getProjection().toScreenLocation(ll);
                    p.y -= 47;
                    LatLng llInfo = mBaiduMap.getProjection().fromScreenLocation(p);
                    // 为弹出的InfoWindow添加点击事件
                    //mInfoWindow=new InfoWindow(location);
                    mInfoWindow = new InfoWindow(location, llInfo,0);
                    location.setOnClickListener(new OnClickListener() {
    
                        @Override
                        public void onClick(View v) {
                            // TODO Auto-generated method stub
                            mBaiduMap.hideInfoWindow();
                        }
                    });
                    // 显示InfoWindow
                    mBaiduMap.showInfoWindow(mInfoWindow);
                    // 设置详细信息布局为可见
                    mMarkerInfoLy.setVisibility(View.VISIBLE);
                    // 根据商家信息为详细信息布局设置信息
                    popupInfo(mMarkerInfoLy, info);
                    return true;
                }
            });
        }

### 布局文件 ###

### MainActivity完整代码 ###

package com.zj.map2;
    
    import java.util.List;
    
    import com.baidu.mapapi.SDKInitializer;
    import com.baidu.mapapi.map.BaiduMap;
    import com.baidu.mapapi.map.BaiduMap.OnMapClickListener;
    import com.baidu.mapapi.map.BaiduMap.OnMarkerClickListener;
    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.MapStatusUpdate;
    import com.baidu.mapapi.map.MapStatusUpdateFactory;
    import com.baidu.mapapi.map.MapView;
    import com.baidu.mapapi.map.Marker;
    import com.baidu.mapapi.map.MarkerOptions;
    import com.baidu.mapapi.map.OverlayOptions;
    import com.baidu.mapapi.model.LatLng;
    
    import android.app.Activity;
    import android.graphics.Point;
    import android.os.Bundle;
    import android.view.Menu;
    import android.view.MenuItem;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.ImageView;
    import android.widget.RelativeLayout;
    import android.widget.TextView;
    
    public class MainActivity extends Activity {
    
        MapView mapView;
        BaiduMap mBaiduMap;
        // 初始化全局 bitmap 信息，不用时及时 recycle
        private BitmapDescriptor mIconMaker;
        private RelativeLayout mMarkerInfoLy;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            SDKInitializer.initialize(getApplicationContext());
            setContentView(R.layout.activity_main);
    
            mapView=(MapView) findViewById(R.id.id_bmapView);
            mMarkerInfoLy = (RelativeLayout) findViewById(R.id.id_marker_info);
            mBaiduMap=mapView.getMap();
    
            mIconMaker = BitmapDescriptorFactory.fromResource(R.drawable.maker);
            MapStatusUpdate msu = MapStatusUpdateFactory.zoomTo(15.0f);
            mBaiduMap.setMapStatus(msu);
    
    
            initMarkerClickEvent();
            initMapClickEvent();
    
        }
    
        private void initMapClickEvent()
        {
            mBaiduMap.setOnMapClickListener(new OnMapClickListener()
            {
    
                @Override
                public boolean onMapPoiClick(MapPoi arg0)
                {
                    return false;
                }
    
                @Override
                public void onMapClick(LatLng arg0)
                {
                    mMarkerInfoLy.setVisibility(View.GONE);
                    mBaiduMap.hideInfoWindow();
    
                }
            });
        }
    
    
        private void initMarkerClickEvent()
        {
            // 对Marker的点击
            mBaiduMap.setOnMarkerClickListener(new OnMarkerClickListener()
            {
                @Override
                public boolean onMarkerClick(final Marker marker)
                {
                    // 获得marker中的数据
                    Info info = (Info) marker.getExtraInfo().get("info");
    
                    InfoWindow mInfoWindow;
                    // 生成一个TextView用户在地图中显示InfoWindow
                    TextView location = new TextView(getApplicationContext());
                    location.setBackgroundResource(R.drawable.location_tips);
                    location.setPadding(30, 20, 30, 50);
                    location.setText(info.getName());
                    // 将marker所在的经纬度的信息转化成屏幕上的坐标
                    final LatLng ll = marker.getPosition();
                    Point p = mBaiduMap.getProjection().toScreenLocation(ll);
                    p.y -= 47;
                    LatLng llInfo = mBaiduMap.getProjection().fromScreenLocation(p);
                    // 为弹出的InfoWindow添加点击事件
                    //mInfoWindow=new InfoWindow(location);
                    mInfoWindow = new InfoWindow(location, llInfo,0);
                    location.setOnClickListener(new OnClickListener() {
    
                        @Override
                        public void onClick(View v) {
                            // TODO Auto-generated method stub
                            mBaiduMap.hideInfoWindow();
                        }
                    });
                    // 显示InfoWindow
                    mBaiduMap.showInfoWindow(mInfoWindow);
                    // 设置详细信息布局为可见
                    mMarkerInfoLy.setVisibility(View.VISIBLE);
                    // 根据商家信息为详细信息布局设置信息
                    popupInfo(mMarkerInfoLy, info);
                    return true;
                }
            });
        }
    
    
        /** 
         * 根据info为布局上的控件设置信息 
         *  
         * @param mMarkerInfo2 
         * @param info 
         */  
        protected void popupInfo(RelativeLayout mMarkerLy, Info info)  
        {  
            ViewHolder viewHolder = null;  
            if (mMarkerLy.getTag() == null)  
            {  
                viewHolder = new ViewHolder();  
                viewHolder.infoImg = (ImageView) mMarkerLy  
                        .findViewById(R.id.info_img);  
                viewHolder.infoName = (TextView) mMarkerLy  
                        .findViewById(R.id.info_name);  
                viewHolder.infoDistance = (TextView) mMarkerLy  
                        .findViewById(R.id.info_distance);  
                viewHolder.infoZan = (TextView) mMarkerLy  
                        .findViewById(R.id.info_zan);  
    
                mMarkerLy.setTag(viewHolder);  
            }  
            viewHolder = (ViewHolder) mMarkerLy.getTag();  
            viewHolder.infoImg.setImageResource(info.getImgId());  
            viewHolder.infoDistance.setText(info.getDistance());  
            viewHolder.infoName.setText(info.getName());  
            viewHolder.infoZan.setText(info.getZan() + "");  
        }  
    
        /** 
         * 复用弹出面板mMarkerLy的控件 
         *  
         * @author zhy 
         *  
         */  
        private class ViewHolder  
        {  
            ImageView infoImg;  
            TextView infoName;  
            TextView infoDistance;  
            TextView infoZan;  
        }  
    
    
    
    
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
            // TODO Auto-generated method stub
            getMenuInflater().inflate(R.menu.main, menu);
            return super.onCreateOptionsMenu(menu);
        }
    
        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
            // TODO Auto-generated method stub
            switch (item.getItemId()) {
            case R.id.id_menu_map_addMaker:
                 addInfosOverlay(Info.infos);
                break;
    
            default:
                break;
            }
            return super.onOptionsItemSelected(item);
        }
    
        /**
         * 初始化图层
         */
        public void addInfosOverlay(List<Info> infos)
        {
            mBaiduMap.clear();
            LatLng latLng = null;
            OverlayOptions overlayOptions = null;
            Marker marker = null;
            for (Info info : infos)
            {
                // 位置
                latLng = new LatLng(info.getLatitude(), info.getLongitude());
                // 图标
                overlayOptions = new MarkerOptions().position(latLng)
                        .icon(mIconMaker).zIndex(5);
                marker = (Marker) (mBaiduMap.addOverlay(overlayOptions));
                Bundle bundle = new Bundle();
                bundle.putSerializable("info", info);
                marker.setExtraInfo(bundle);
            }
            // 将地图移到到最后一个经纬度位置
            MapStatusUpdate u = MapStatusUpdateFactory.newLatLng(latLng);
            mBaiduMap.setMapStatus(u);
        }
    }

### 参考链接： ###

[Android 百度地图 SDK v3.0.0 （三） 添加覆盖物Marker与InfoWindow的使用 - Hongyang - 博客频道 - CSDN.NET][Android _ SDK v3.0.0 _ _Marker_InfoWindow_ - Hongyang - _ - CSDN.NET]

### 效果如下 ###

![这里写图片描述][20160417152356403]

[Android _ SDK v3.0.0 _ _Marker_InfoWindow_ - Hongyang - _ - CSDN.NET]: http://blog.csdn.net/lmj623565791/article/details/37737213
[20160417152356403]: /images/20220724/6b5783ed60174c1d8926745a28a12e6d.png