PositionUtils.java

package com.jiuqi.mobile.nigo.comeclose.utils;

/**
 * 定位工具类
 * @author modi
 *
 */
public final class PositionUtils {
	private PositionUtils(){
	}
	/**
	 * 两个经纬度之间的距离
	 * @param lon1
	 * @param lat1
	 * @param lon2
	 * @param lat2
	 * @return 公里数
	 */
	public static double pointSpace(double lon1, double lat1, double lon2, double lat2){
//		double subLon = range_kilometer/111;
//		double subLat = range_kilometer/110;
		return Math.hypot((lon1-lon2)*111, (lat1-lat2)*110);
	}
}