Custom UINavigationBar image with default gradient and lines

Question

I want to use custom graphics as UINavigationBar background:

[[UINavigationBar appearance]
    setBackgroundImage:[UIImage imageNamed:@"tile"]
    forBarMetrics:UIBarMetricsDefault];

Works fine, except I lost default gradient, white line at top and black line at bottom of the titlebar. Any ideas how to get them back?

Answer 1

Gave up and added gradient and lines into the texture. Of course this meant that I had to hardcode texture height as 44 pixels == navigation bar size for vertical orientation.

Not happy with the solution, but it does work without any problems.