循环判断视图中的子控件:
-(void)BtnOrderClick:(UIButton *)btn{
for(UIButton *button in self.orderView.subviews){
button.titleLabel.font=[UIFont systemFontOfSize:12];
button.selected=NO;
button.backgroundColor=[UIColor whiteColor];
}
btn.backgroundColor=LJColor(0,137,206);
btn.titleLabel.font = [UIFont fontWithName:@"Helvetica-Bold" size:12];
btn.selected=YES;
}