一.UISegmentControl是一个分段控件,父类是UIControl,内涵数个button,并且都有对应下标index: NSArray *titles = @[@"护卫队",@"三军仪仗队",@"步兵方队",@"炮兵方队"]; UISegmentedControl  *SegmentedC = [[UISegmentedControl alloc]initWithItems:titles]; SegmentedC.f…