通过android手机内置GPS获取平面直角坐标和高斯的java程序代码。 在部队和地方测绘工作中，常常需要知道当前位置的平面直角坐标，现在仅仅通过一个带GPS的安卓手机就可以实现。以后在外出找点时，就靠它了。-By android phone built-in GPS for plane rectangular coordinates and Gauss java code. In the armed forces and local mapping work, often need t

计算安卓手机的九宫格解锁程序有多少种解锁图案。-calculate how many kinds of unlock pattern are there in the Android mobile phone by programming.