获取地球上两经纬度坐标点间的距离,利用[大圆距离公式] A diagram illustrating great-circle distance (drawn in red) between two points on a sphere, P and Q. Two antipodal points, u and v, are also depicted. 谷歌都在用呢, C#实现的代码如下: /// <summary> /// 地球半径 /// </summary> priva
Version:0.9 StartHTML:-1 EndHTML:-1 StartFragment:00000099 EndFragment:00003259 Android中获取系统上安装的APP信息,并且提供卸载.区别用户应用和系统应用的小程序,供初学者参考. public class PakageInfoProvider { private static final String tag = "GetappinfoActivity"; private Context contex