MapUtil 地图坐标转换

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
public class MapUtil {
//百度转高德
private static double[] bdToGaoDe(double bd_lat, double bd_lon) {
double[] gd_lat_lon = new double[2];
double PI = 3.14159265358979324 * 3000.0 / 180.0;
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);
gd_lat_lon[0] = z * Math.cos(theta);
gd_lat_lon[1] = z * Math.sin(theta);
return gd_lat_lon;
}
//高德转
public static double[] gaoDeToBaidu(double gd_lon, double gd_lat) {
double[] bd_lat_lon = new double[2];
double PI = 3.14159265358979324 * 3000.0 / 180.0;
double x = gd_lon, y = gd_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);
bd_lat_lon[0] = z * Math.cos(theta) + 0.0065;
bd_lat_lon[1] = z * Math.sin(theta) + 0.006;
return bd_lat_lon;
}
//
判断手机是否有app
public static boolean isInstallPackage(String packageName) {
return new File("/data/data/" + packageName).exists();
}
}