安卓实现高德地图定位 计算两者之间的距离如何实现

安卓实现高德地图定位 计算两者之间的距离如何实现 计算距离的这个类是那个jar包下面的类啊

//1.将两个经纬度点转成投影点

MAMapPoint point1 = MAMapPointForCoordinate(CLLocationCoordinate2DMake(39.989612,116.480972));

MAMapPoint point2 = MAMapPointForCoordinate(CLLocationCoordinate2DMake(39.990347,116.480441));

//2.计算距离

CLLocationDistance distance = MAMetersBetweenMapPoints(point1,point2);