计算两个经纬度之间的距离

计算两个经纬度之间的距离

/*
计算两个经纬度之间的距离 结果单位:米
*/
public static double getDistance(String lat1Str, String lng1Str, String lat2Str, String lng2Str) {
Double lat1 = Double.parseDouble(lat1Str);
Double lng1 = Double.parseDouble(lng1Str);
Double lat2 = Double.parseDouble(lat2Str);
Double lng2 = Double.parseDouble(lng2Str); double radLat1 = rad(lat1);
double radLat2 = rad(lat2);
double a = radLat1 - radLat2;
double b = rad(lng1) - rad(lng2);
double s = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a/2),2) +
Math.cos(radLat1)*Math.cos(radLat2)*Math.pow(Math.sin(b/2),2)));
s = s * EARTH_RADIUS;
s = Math.round(s * 10000) / 10000;
return s;
}
private static double EARTH_RADIUS = 6378137;

private static double rad(double d) {
return d * Math.PI / 180.0;
}
05-07 15:55