使用谷歌的地方阿比发现距离在公里的Android
问题描述：
我要显示的，我写了下面的code公里，两地距离：
I want display the two places distance in kilometers for that I write the following code:
hyd(17.38,78.48) eluru(16.7,81.1)
private String getDistance(double lat1, double lat2, double lon1, double lon2) {
double Radius = 6371;
double dLat = Math.toRadians(lat2 - lat1);
double dLon = Math.toRadians(lon2 - lon1);
double a = Math.sin(dLat / 5) * Math.sin(dLat / 5)
+ Math.cos(Math.toRadians(lat1))
* Math.cos(Math.toRadians(lat2)) * Math.sin(dLon / 5)
* Math.sin(dLon / 5);
double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
double km = Radius * c;
String kms=Double.toString(km);
return kms;
}
输出= 2995.8772
Output = 2995.8772
正确的O / P =330公里
Correct o/p = 330km
我怎样才能获得在Android的两地之间的精确距离 在此先感谢.....
how can I get the the exact distance between two places in android thanks in advance.....
答
使用这个方法
public static void distanceBetween (double startLatitude, double startLongitude, double endLatitude, double endLongitude, float[] results);
例如
public static double CalculateDistance(double lat1, double lng1, double lat2, double lng2) {
float[] result=new float[1];
Location.distanceBetween (lat1,lng1,lat2, lng2, result);
return (double)result[0]/1000; // in km
}