//
UIImage * backGroundImage = [UIImage imageNamed: @ "titleImage"];
backGroundImage = [backGroundImage resizableImageWithCapInsets: UIEdgeInsetsZero resizingMode: UIImageResizingModeStretch];
[self.navigationController.navigationBar setBackgroundImage: backGroundImage forBarMetrics: UIBarMetricsDefault];
Pro-Test so gut.