下拉列表中的单选或多选
/＜em＞-------------------------选择-----------------------＜/em＞
使用：[self showPopUpWithTitle:@"Select Country" withOption:arryList xy:CGPointMake(16, 150) size:CGSizeMake(287, 280) isMultiple:NO];
isMultiple =yes 表示多选；isMultiple =No 表示单选
/＜em＞-------------------------更改下拉列表的背景色----------------
[Dropobj SetBackGroundDropDwon_R:0.0 G:108.0 B:194.0 alpha:0.70];
/＜em＞-------------------------代理方法----------------
对单选获取值
(void)DropDownListView:(DropDownListView *)dropdownListView didSelectedIndex:(NSInteger)anIndex{
}
对多选获取值