当我将透明设置为否时，双击导航栏

Question

When i set this code in viewDidLoad:

[self.navigationController.navigationBar setTranslucent:NO];

and run the project in xcode, it creates other nav bar above of my main nav bar.

Anyone know what is it?

Answer 1

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

The code above set the nav bar from translucent to solid without hide or create an other nav bar.