查找两个地理点之间的距离的源代码[重复]

Question

我正在开发一个 Android 应用程序，我想添加商店定位器详细信息和地图视图。我搜索了很多。但我没有得到任何有目的的东西。我很紧张，强烈需要您的帮助。

问题是，我想求2个坐标之间的距离，我得到了一个半正弦公式，但不知道如何成功运行该程序，因为我是Android初学者，请帮忙做逐步编码.,即xml代码也..,拜托.,拜托.,

Answer 1

来自 MotoDev 片段（GPS 坐标之间的距离）：

Location originLocation = new Location("gps");
Location destinationLocation = new Location("gps");
originLocation.setLatitude(originLatitude);
originLocation.setLongitude(originLongitude);
destinationLocation.setLatitude(originLatitude);
destinationLocation.setLongitude(originLongitude);
float distance = originLocation.distanceTo(destinationLocation);

Answer 2

http://developer.android.com/reference/android/location/Location.html

查看 distanceTo 或 distanceBetween。您可以根据纬度和经度创建位置对象：

Location location = new Location("");
location.setLatitude(lat);
location.setLongitude(lon);

Answer 3

使用此代码。您将获得两个地理点之间的距离。

 private String distance(double lati, double longi, double curlati1,
        double curlongi1) {

    double theta = longi - curlongi1;
    double dist = Math.sin(deg2rad(lati)) * Math.sin(deg2rad(curlati1))
            + Math.cos(deg2rad(lati)) * Math.cos(deg2rad(curlati1))
            * Math.cos(deg2rad(theta));
    dist = Math.acos(dist);
    dist = rad2deg(dist);
    dist = dist * 60 * 1.1515;

    dist = dist * 1.609344;

    result = Double.toString(dist);
    System.out.println("dist_result :" + result);
    return (result);
}

/* ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: */
/* :: This function converts decimal degrees to radians : */
/* ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: */
private double deg2rad(double deg) {
    return (deg * Math.PI / 180.0);
}

/* ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: */
/* :: This function converts radians to decimal degrees : */
/* ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: */
private double rad2deg(double rad) {
    return (rad * 180.0 / Math.PI);
}