Android圆形旋转菜单，分享给大家，不仅仅是显示，还可以拖动，然后显示的值根据拖动的结果变换，可做成的demo例如：老式电话拨号程序，轮盘抽奖，大风车-Android circular rotating menu to share to everyone, not just the display, you can also drag and then drag the displayed value according to the results of transformation, c