如何找到两个地理点之间的距离? [英] how to find the distance between two geopoints?

问题描述

double distance;  

Location locationA = new Location("point A");  

locationA.setLatitude(latA);  
locationA.setLongitude(lngA);  

Location locationB = new Location("point B");  

locationB.setLatitude(latB);  
LocationB.setLongitude(lngB);  

distance = locationA.distanceTo(locationB);  

上面的代码不起作用，我的距离是 0.0 公里?同样在位置类的构造函数中，字符串提供者是什么意思.在上面的代码中，我使用 PointA 和 PointB 作为提供者.

the above code is not working and i am getting 0.0 Km as distance? Also in the constructor of the location class, what does the string provider mean. In the above code i am using PointA and PointB as the providers.

为什么上面的代码不起作用?

why is the above code not working?

提前谢谢你.

LOGCAT05-09 17:48:56.144:信息/当前位置(1573):纬度 0.0 lng 0.005-09 17:48:56.155: 信息/检查位置 loc(1573): lat 54.4288665 lng 10.169366

LOGCAT 05-09 17:48:56.144: INFO/current loc(1573): lat 0.0 lng 0.0 05-09 17:48:56.155: INFO/checklocation loc(1573): lat 54.4288665 lng 10.169366

推荐答案

试试Location.distanceBetween(..)

更新:

如果您从 GeoPoint 获取纬度/经度，那么它们是微度数.您必须乘以 1e6.

If you are getting lat/lon from GeoPoint then they are in microdegrees. You must multiply by 1e6.

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