Android代码DropDownMenu

DropDownMenu ThisisaDropDownMenuwiththeadvantageofallthedropDownMenusbyothersbefore, Ihavewrittenitforseveraltimes,Nowthecodeismostclearly. 中文文档 Feature useAdaptertoaddtheSubDropDownMenu.OverridethegetView()methodtosupplythewanttedview. useGenerictomakeal