Push a uiviewcontroller with a clear navigation bar

Question

I have a drunk that happens when I push a viewcontroller with a clear navigation bar. Or rather when I press the backbutton.

My app :

I would like this result :

My code :

DetailViewController -> ViewDidLoad

[self.navigationController.navigationBar setBackgroundImage:[UIImage new]
                             forBarMetrics:UIBarMetricsDefault];
    self.navigationController.navigationBar.shadowImage = [UIImage new];
    self.navigationController.navigationBar.translucent = YES;

DetailViewController

- (void)viewDidDisappear:(BOOL)animated {
    self.navigationController.navigationBar.translucent = NO;
}

- (void)viewWillDisappear:(BOOL)animated {
    self.navigationController.navigationBar.translucent = NO;
}

Answer 1

A while back I was looking to solve the exact same issue, and unfortunately never got it looking exactly like your mockup. However, setting the backgroundImage to nil on viewWillDisappear does help the transition a bit.

- (void)viewWillDisappear:(BOOL)animated
{
    [self.navigationController.navigationBar setBackgroundImage:nil                       
                                         forBarMetrics:UIBarMetricsDefault];
    self.navigationController.navigationBar.shadowImage = nil;

    self.navigationController.navigationBar.translucent = NO;
}