1. public class GCJ2WGS {
    3.     public static void main(String[] args) {
    5.         GCJ2WGS wg = new GCJ2WGS();
    7.         HashMap<String, Double> hm = wg.delta(38.123456,114.654321);
    9.         System.out.println(hm);
    10.     }
    11.     //圆周率 GCJ_02_To_WGS_84
    12.     double PI = 3.14159265358979324;
    13.     /**
    14.      * @author 作者:
    15.      * 方法描述:方法可以将高德地图SDK获取到的GPS经纬度转换为真实的经纬度，可以用于解决安卓系统使用高德SDK获取经纬度的转换问题。
    16.      * @param 需要转换的经纬度
    17.      * @return 转换为真实GPS坐标后的经纬度
    18.      * @throws <异常类型> {@inheritDoc} 异常描述
    19.      */
    20.     public HashMap<String, Double> delta(double lat,double lon) {
    21.         double a = 6378245.0;//克拉索夫斯基椭球参数长半轴a
    22.         double ee = 0.00669342162296594323;//克拉索夫斯基椭球参数第一偏心率平方
    23.         double dLat = this.transformLat(lon - 105.0, lat - 35.0);
    24.         double dLon = this.transformLon(lon - 105.0, lat - 35.0);
    25.         double radLat = lat / 180.0 * this.PI;
    26.         double magic = Math.sin(radLat);
    27.         magic = 1 - ee * magic * magic;
    28.         double sqrtMagic = Math.sqrt(magic);
    29.         dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * this.PI);
    30.         dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * this.PI);
    32.         HashMap<String, Double> hm = new HashMap<String, Double>();
    33.         hm.put("lat",lat - dLat);
    34.         hm.put("lon",lon - dLon);
    36.         return hm;
    37.     }
    38.     //转换经度
    39.     public double transformLon(double x, double y) {
    40.         double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * Math.sqrt(Math.abs(x));
    41.         ret += (20.0 * Math.sin(6.0 * x * this.PI) + 20.0 * Math.sin(2.0 * x * this.PI)) * 2.0 / 3.0;
    42.         ret += (20.0 * Math.sin(x * this.PI) + 40.0 * Math.sin(x / 3.0 * this.PI)) * 2.0 / 3.0;
    43.         ret += (150.0 * Math.sin(x / 12.0 * this.PI) + 300.0 * Math.sin(x / 30.0 * this.PI)) * 2.0 / 3.0;
    44.         return ret;
    45.     }
    46.     //转换纬度
    47.     public double transformLat(double x, double y) {
    48.         double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * Math.sqrt(Math.abs(x));
    49.         ret += (20.0 * Math.sin(6.0 * x * this.PI) + 20.0 * Math.sin(2.0 * x * this.PI)) * 2.0 / 3.0;
    50.         ret += (20.0 * Math.sin(y * this.PI) + 40.0 * Math.sin(y / 3.0 * this.PI)) * 2.0 / 3.0;
    51.         ret += (160.0 * Math.sin(y / 12.0 * this.PI) + 320 * Math.sin(y * this.PI / 30.0)) * 2.0 / 3.0;
    52.         return ret;
    53.     }
    55. }


    /
    将经纬度转换为度分秒格式
     _    @param du 116.418847
    *     @return 116°25’7.85”
    /
    _fun changeToDFM(du: Double): String? {
    val du1 = du.toInt()
    val tp = (du - du1)     60
    val fen = tp.toInt()
    val miao =
    String._format    (“%.2f”, Math.abs((tp - fen) * 60))
    return du1.toString() + “°” + Math.abs(fen) + “‘“ + miao + “\””
    }
    _/
    将经纬度转换为度分秒格式
     @param _du 116.418847
    *     @return _116°25’7”,E
    /
    _fun changeToDFM(du: Double, isLat: Boolean): String? {
    val d = if (isLat) {
    if (du > 0) {
    “N”
    } else {
    “S”
    }
    } else {
    if (du > 0) {
    “E”
    } else {
    “W”
    }
    }
    val du1 = du.toInt()
    val tp = (du - du1)     60
    val fen = tp.toInt()
    val miao = Math.abs((tp - fen) * 60).toInt()
    return du1.toString() + “°” + Math.abs(fen) + “‘“ + miao + “\”” + “,$d”
    }