使用iPhone的gmap中的纬度经度计算两地之间的距离 [英] Calculate distance between two place using latitude-longitude in gmap for iPhone

问题描述

可能存在重复：

GPS坐标以度来计算距离

如何使用gmap for iphone中的纬度经度计算两地之间的距离？
使用gmap for iphone中的latitude-longitude计算两个地点之间的距离

您必须使用Core位置框架。所以不要忘记添加&导入核心位置框架。

  #import< CoreLocation / CoreLocation.h> 
 
 CLLocation * locA = [[CLLocation alloc] initWithLatitude：lat1 longitude：long1]; 
 
 CLLocation * locB = [[CLLocation alloc] initWithLatitude：lat2 longitude：long2]; 
 
 CLLocationDistance distance = [locA distanceFromLocation：locB]; 
 
 //以米为单位的距离
 
 // 1米== 100厘米
 
 // 1米== 3.280英尺
 
 // 1平方米== 10.76平方英尺
 
 
 [locA发布]; 
 
 [locB发布]; 
  

Possible Duplicate:
GPS coordinates in degrees to calculate distances

How to Calculate distance between two place using latitude-longitude in gmap for iPhone? Calculate distance between two place using latitude-longitude in gmap for iPhone

解决方案

You have to use Core Location Framework. So don't forget to Add & import Core Location Framework .

 #import <CoreLocation/CoreLocation.h>

 CLLocation *locA = [[CLLocation alloc] initWithLatitude:lat1 longitude:long1];

 CLLocation *locB = [[CLLocation alloc] initWithLatitude:lat2 longitude:long2];

 CLLocationDistance distance = [locA distanceFromLocation:locB];

 //distance in Meters

 //1 meter == 100 centimeter

 //1 meter == 3.280 feet

 //1 square meter == 10.76 square feet


 [locA release];

 [locB release];

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