Remove background of Search Bar in iOS

The way to remove background as below:

for (UIView *view in searchBar.subviews)
{
if ([view isKindOfClass:NSClassFromString
(@"UISearchBarBackground")])
{
[view removeFromSuperview];
break;
}
}

Another way: 

UIImage* image = [[UIImage alloc] init];
        [searchBar setBackgroundImage:image];

I hope it will help you.