（Android）调用百度地图api之添加覆盖物

感谢 hyman 的视频教学课程：https://www.imooc.com/video/5686

 

一、自定义类Info

public class Info implements Serializable
{
   private double latitude;
   private double longitude;
   private int imgId;
   private String name;
   public static List infos = new ArrayList();
   
   //添加两个静态地图覆盖物
   static
   {
      infos.add(new Info(32.120072, 118.922755, R.drawable.bookbox, "box1202"));
      infos.add(new Info(32.120267, 118.920518, R.drawable.bookbox, "box1201"));
   }

   public Info(double latitude, double longitude, int imgId, String name)
   {
      this.latitude = latitude;
      this.longitude = longitude;
      this.imgId = imgId; //点击覆盖物，显示图片
      this.name = name; //点击覆盖物，显示文字
   }

   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 int getImgId()
   {
      return imgId;
   }

   public void setImgId(int imgId)
   {
      this.imgId = imgId;
   }

   public String getName()
   {
      return name;
   }

   public void setName(String name)
   {
      this.name = name;
   }
}

二、核心代码 

• 声明所需变量

// 覆盖物相关
private BitmapDescriptor mMarker;
public RelativeLayout mMarkerLy;

• 核心代码 

private void initMarker() //初始化
{
    mMarker = BitmapDescriptorFactory.fromResource(R.drawable.bookbox); //设置地图覆盖物图标
    mMarkerLy = findViewById(R.id.id_maker_ly); //布局文件中所对应的RelativeLayout
}

 // 添加覆盖物
private void addOverlays(List infos)
{
    mBaiduMap.clear();
    LatLng latLng = null;
    Marker marker = null;
    OverlayOptions options;
    for (Info info : infos)
    {
        // 经纬度
        latLng = new LatLng(info.getLatitude(), info.getLongitude());
        // 图标
        options = new MarkerOptions().position(latLng).icon(mMarker)
                .zIndex(5);
        marker = (Marker) mBaiduMap.addOverlay(options);
        Bundle arg0 = new Bundle();
        arg0.putSerializable("info", info);
        marker.setExtraInfo(arg0);
    }
    MapStatusUpdate msu = MapStatusUpdateFactory.newLatLng(latLng);
    mBaiduMap.setMapStatus(msu);
}

mBaiduMap.setOnMarkerClickListener(new BaiduMap.OnMarkerClickListener() //设置监听
{
    @Override
    public boolean onMarkerClick(Marker marker)
    {

        Bundle extraInfo = marker.getExtraInfo();
        Info info = (Info) extraInfo.getSerializable("info");
        TextView name = mMarkerLy.findViewById(R.id.id_info_name);
        boxname=info.getName(); //从info类中获取数据
        /*connect();*/
        name.setText(info.getName());
        mMarkerLy.setVisibility(View.VISIBLE); //布局文件中的RelativeLayout设置为可见
        return true;
    }
});

mBaiduMap.setOnMapClickListener(new BaiduMap.OnMapClickListener()
{
    @Override
    public boolean onMapPoiClick(MapPoi arg0)
    {
        return false;
    }

    @Override
    public void onMapClick(LatLng arg0)
    {
        mMarkerLy.setVisibility(View.GONE);
        mBaiduMap.hideInfoWindow();
        /*mConnect.disconnect();*/
        /*adapter=null;*/
    }
}); 

 三、其它

android:id="@+id/id_maker_ly"
    android:layout_width="match_parent"
    android:layout_height="240dp"
    android:layout_alignParentBottom="true"
    android:background="#cc4e5a6b"
    android:clickable="true"
    android:visibility="gone">

    
    android:id="@+id/id_info_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="书箱1201"
        android:textColor="#fff5eb" />