Dynamically hiding tab bar in UITabBarController?

bonehead · 05-02-2008, 11:58 AM

I'm creating a view controller that emulates the Photos "slide viewer" to the extent possible. I'd like to be able to hide the status bar, nav bar, and tab bar (my app uses a UITabBarController) dynamically, after an idle timeout, and then re-show them when the user taps the screen.

I haven't figured out how to hide the tab bar normally displayed by UITabBarController. Is there a straightforward way to do this?

javid.alimohideen · 05-02-2008, 12:06 PM

I was looking for a similar functionality in may application. In my case, I just wanted to slide the Navigation bar up/down (e.g., Maps search, when clicked on search bar, the nav bar slides down)
The way, I did it, I access the navigation Controller property of my view controller and just offset the views to either move up or down inside a animation block.

Code:

-(void) setViewMoveUp:(BOOL) value
{
 [UiView beginAnimations: nil context: NULL];
 [UiView setAnimationDuration: 0.3];

 NSArray *subViews = [self.navigationController.view subViews];
foreach (UIView *view on subViews)
{
  if (value)
   // do something
  else
   // do something
}
[UIView commitAnimations];
}

bonehead · 05-02-2008, 12:55 PM

Interesting suggestion-- I'll give it a shot. Thanks!

javid.alimohideen · 05-02-2008, 01:02 PM

Let me know if you have any success with the tab bar fading in/out, I am looking for the exact same functionality in my app to.

Thanks,
Javid

scottiphone · 05-02-2008, 01:26 PM

Set it's alpha alpha to 0 to fade. 1 to fade in.
Check the animation section in the programmers guide.
(Note that the guide is usually updated with each new SDK so if you only have the original it may be out of date)

bonehead · 05-02-2008, 06:00 PM

Thanks for the hiding and alpha tips -- those work great.

However, the problem I'm having now is that, even if I try to force my content view's size to full screen, it seems that something (the UITabBarController ?) is forcing my content view to remain inside the bounds defined by the navigation bar and the tab bar.

So now I have a screen with nav bar and tab bar hidden, but the main content view is smaller than the full screen.

Is it necessary to set something up in the plist file to allow the content view to take the whole screen?