问题
I have an iOS app where the main screen is a UICollectionViewController. When selecting an Item from the collection view the view is pushed to a detail view of the item. In the detail view I built a drawer/slider that moves out from the side. In order to get the view to look the way I wanted I hid the default navigation bar and inserted one via storyboards.
I ran into an issue that when hiding the default navigation bar you lose the back button functionality that comes with using a navigation controller. I worked around this by adding a button where the back button would have been (the image above is shown without the button). Now I use the line of code below to move back to the collection view.
[self.navigationController popToRootViewControllerAnimated:YES];
It works the way I want it except that I lose my Navigation Bar when I return to the collection view. Does anyone have any thoughts on how to fix this? Thanks in advance!
回答1:
In viewWillAppear of your rootViewControler
-(void)viewWillAppear:(BOOL)animated{
[self.navigationController setNavigationBarHidden:NO];
}
来源：https://stackoverflow.com/questions/18456189/when-using-poptorootviewcontroller-i-lose-my-navigation-bar