/**

* 计算两点的距离

*

* @param fromPoint

* @param toPoint

* @return 返回String类型带距离单位

*/

public static String measureDistanceStr(LatLng fromPoint, LatLng toPoint) {

String distanceStr = "";

if (fromPoint != null && toPoint != null) {

long distance = MapUtil.measureDistance(fromPoint, toPoint);

if (distance >= 1000) {

if (distance % 1000 == 0) {

distanceStr = distance / 1000 + "km";

} else {

if ((distance % 1000 + "").length() < 3) {

distanceStr = distance / 1000 + ".0km";

} else {

long l1 = (distance % 1000) / 100;

distanceStr = distance / 1000 + "." + l1 + "km";

}

}

} else {

distanceStr = distance + "m";

}

}

return distanceStr;

}

//测量两点的距离

public static long measureDistance(LatLng fromPoint, LatLng toPoint) {

double EARTH_RADIUS = 6378137;

long distance = 0;

double startLongitude = fromPoint.longitude;

double startLatitude = fromPoint.latitude;

double endLongitude = toPoint.longitude;

double endLatitude = toPoint.latitude;

double radLatitude1 = startLatitude * Math.PI / 180.0;

double radLatitude2 = endLatitude * Math.PI / 180.0;

double a = Math.abs(radLatitude1 - radLatitude2);

double b = Math.abs(startLongitude * Math.PI / 180.0 - endLongitude * Math.PI / 180.0);

double s = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2), 2)

+ Math.cos(radLatitude1) * Math.cos(radLatitude2) * Math.pow(Math.sin(b / 2), 2)));

s = s * EARTH_RADIUS;

distance = Math.round(s * 10000) / 10000; // 返回距离单位是米

return distance;

}

标签：toPoint,distance,double,fromPoint,地图,坐标,高德,Math,1000

来源： https://www.cnblogs.com/pccywq/p/12876253.html