Make navigation bar transparent regarding below image in iOS 8.1

Question

I try to set my navigation bar transparent regarding a image below this, something like the following image :

Answer 1

Have you tried setting the navigationBar's alpha property? In your root view controller to the navigation controller...

[self.navigationController.navigationBar setBackgroundColor:[UIColor greenColor]];
[self.navigationController.navigationBar setAlpha:0.3f];