Iphone: Is it possible to hide the TabBar? (Pre-iOS 8)

user_136449 0
Viewed 32462

I have an application that uses a UITabBarController to switch between modes. When in a certain mode, I'd like to hide the tab bar until the steps of that mode have been completed. Note that I'm not using a navigation controller so I can't use the setHidesBottomBarWhenPushed method on the navigation controller to hide the tab bar.

Prior to iOS 8, When I attempt to hide the tarbar using:

self.tabBarController.tabBar.hidden = YES

the tab bar goes away, but it leaves a 50 pixel blank area at the bottom of the screen where the tab bar used to be. I can't seem to figure out how to fill that area. Anything in the UI that is in that area is clipped and cannot be seen.

Any ideas if this is even possible? I'd really like to stay away from the navigation controller.

uitabbarcontroller objective-c iphone ios
16 Answers

Like Steve, I haven't found a clean way to do this (even though Apple Photopicker does something similar). Here is what I have done:

 if (systemAction)
  {
    // Reveal tab bar back
    CGRect bounds = [[UIScreen mainScreen] bounds];
    CGRect tabBarFrame = self.tabBarController.tabBar.frame;
    self.tabBarController.view.frame = CGRectMake(0,0,bounds.size.width,bounds.size.height);
    self.toolBar.hidden = YES;
    systemAction = NO;
  }
  else
  {
    //hide tab bar
    CGRect bounds = [[UIScreen mainScreen] bounds];
    CGRect tabBarFrame = self.tabBarController.tabBar.frame;
    CGRect navigationBarFrame = self.navigationController.navigationBar.frame;
    self.tabBarController.view.frame = CGRectMake(0,0,bounds.size.width,bounds.size.height+tabBarFrame.size.height);
    self.toolBar.hidden = NO;
    CGRect frame = self.toolBar.frame;
    frame.origin.y = bounds.size.height - frame.size.height - navigationBarFrame.size.height;
    self.toolBar.frame = frame;
    systemAction = YES;
  }

What it is doing is pushing the view down so I can display a toolbar (and not hiding it). Obviously this is for only the 'root view' of a tabbar + navigation controller. For any subsequent views you can set the 'hidesBottomBarWhenPushed' on the viewcontroller you are pushing.

user_4276340

Do you have the autoResizingMask set on the sub view?

view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;

Something like that should do the trick and allow the view sitting atop the stack to re-size.

user_1167420

put the statement in the init method of the UIViewController

override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {
        super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
        self.hidesBottomBarWhenPushed = true
        setupDependencyConfigurator()
    }
user_51067130
user_610720

Why are you not using a navigation controller. It's a lot easier to hide the nav bar than the tab bar...

user_63300
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