Android spinner test project

基于android下的自定义下拉列表，是spinner的升级版本-Based on the the android custom drop-down list, is an upgraded version of the spinner

android中的UI控件，spinner下拉列表。它是一个列表选择框，会在用户选择后，展示一个列表供用户进行选择。-The android UI controls, spinner drop-down list. It is a list of select box, the user will be selected, shows a list for the user to make a selection.

android spinner object used to display list