I want to calculate total distance between each points both contains lat and long, these points are stored in local database, so the scenario is I want to calculate distance from point a to b & b to c & c to d and these points(lat and long) are stored into database using google place api ![enter image description here](https://i.stack.imgur.com/ZBsDW.jpg)
所有点均从数据库中获取。
您可以在不使用places api的情况下计算2个位置点之间的距离
private double distance(double lat1, double lon1, double lat2, double lon2) {
double theta = lon1 - lon2;
double dist = Math.sin(deg2rad(lat1))
* Math.sin(deg2rad(lat2))
+ Math.cos(deg2rad(lat1))
* Math.cos(deg2rad(lat2))
* Math.cos(deg2rad(theta));
dist = Math.acos(dist);
dist = rad2deg(dist);
dist = dist * 60 * 1.1515;
return (dist);
}
private double deg2rad(double deg) {
return (deg * Math.PI / 180.0);
}
private double rad2deg(double rad) {
return (rad * 180.0 / Math.PI);
}
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