【地图转换工具类】：GCJ02与BD09标准转换

public class GCJ02_BD09 {
    public static double pi = 3.141592653589793 * 3000.0 / 180.0;

    /**
     * 火星坐标系 (GCJ-02) 与百度坐标系 (BD-09) 的转换算法 将 GCJ-02 坐标转换成 BD-09 坐标
     *
     * @param gg_lat
     * @param gg_lon
     * @return
     */
    public static LocateInfo gcj02_To_Bd09(double gg_lon, double gg_lat) {
        double x = gg_lon, y = gg_lat;
        double z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * pi);
        double theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * pi);
        double bd_lon = z * Math.cos(theta) + 0.0065;
        double bd_lat = z * Math.sin(theta) + 0.006;
        return new LocateInfo(bd_lon, bd_lat);
    }

    /**
     * 火星坐标系 (GCJ-02) 与百度坐标系 (BD-09) 的转换算法   将 BD-09 坐标转换成GCJ-02 坐标
     *
     * @param bd_lon
     * @param bd_lat
     * @return
     */
    public static LocateInfo bd09_To_Gcj02(double bd_lon, double bd_lat) {
        double x = bd_lon - 0.0065, y = bd_lat - 0.006;
        double z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * pi);
        double theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * pi);
        double gg_lon = z * Math.cos(theta);
        double gg_lat = z * Math.sin(theta);
        return new LocateInfo(gg_lon, gg_lat);
    }
}

/**
 * Created by wangmh on 2018/2/7.
 * 定位的几个基本信息
 */

public class LocateInfo {
    private double longitude;
    private double Latitude;
    private boolean isChina;

    public LocateInfo() {

    }

    public LocateInfo(double longitude, double latitude) {
        this.longitude = longitude;
        Latitude = latitude;
    }

    public double getLongitude() {
        return longitude;
    }

    public void setLongitude(double longitude) {
        this.longitude = longitude;
    }

    public double getLatitude() {
        return Latitude;
    }

    public void setLatitude(double latitude) {
        Latitude = latitude;
    }

    public boolean isChina() {
        return isChina;
    }

    public void setChina(boolean china) {
        isChina = china;
    }
}