修改searchBar两种后背景颜色

searchbar.barTintColor = [UIColor whiteColor];

    

    UIColor *innerColor = kColor(235, 235, 241, 1);;

    for (UIView* subview in [[searchbar.subviews lastObject] subviews]) {

        if ([subview isKindOfClass:[UITextField class]]) {

            UITextField *textField = (UITextField*)subview;

            textField.backgroundColor = innerColor;

        }

    }