Search Bar with Clear Background

    UISearchBar* mSearchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0,160,320,40)];
    mSearchBar.showsCancelButton = NO;
    mSearchBar.userInteractionEnabled = YES;
    mSearchBar.backgroundColor = [UIColor clearColor];
    mSearchBar.tintColor = [UIColor whiteColor];
    mSearchBar.showsScopeBar = NO;
    [self.view addSubview:mSearchBar];
   
    for (UIView *subview in mSearchBar.subviews)
    {
        if ([subview isKindOfClass:NSClassFromString(@"UISearchBarBackground")])
        {
            [subview removeFromSuperview];
            break;
        }
    }