How to hide tab bar programmatically and then expand view to fit

Question

I got the code from this question: How to hide UITabBarController programmatically? which is brilliant, however the view doesn't expand to fit the space left by the tab bar now.

I have set the appropriate UIViewAutoresizingMasks to the view, but I'm assuming that just because its hidden doesn't mean its not still taking up the space?

Anyway, if I do [self.navigationController setNavigationBarHidden:YES animated:YES]; then the navigation bar moves up and off the screen expanding the view with it.

How can I replicate this behavior for the Tab Bar?

score 1 · Answer 1 · answered Apr 06 '13 at 19:51

This worked great for me! (combines solutions from other posts mentioned -580 is randomly large number)

for(UIView *view in self.tabBarController.view.subviews)
{
    if([view isKindOfClass:[UITabBar class]])
    {
        [view setFrame:CGRectMake(view.frame.origin.x, 580, view.frame.size.width,            
                                  view.frame.size.height)];
    }
    else
    {
        [view setFrame:CGRectMake(view.frame.origin.x, view.frame.origin.y,        
                                  view.frame.size.width, view.frame.size.height +40)];
    }
}

score 1 · Answer 2 · answered Jan 16 '14 at 12:43

-(void)hideTabBar
{   UITabBarController * tabbarcontroller= appDelegate.tabBarVC;
        if (tabbarcontroller.tabBar.isHidden) 
    {
        return;
    }
    tabbarcontroller.tabBar.hidden=YES;
    CGRect frm=tabbarcontroller.view.frame;
    frm.size.height += tabbarcontroller.tabBar.frame.size.height;
    tabbarcontroller.view.frame=frm;
}
-(void)showTabBar
{    UITabBarController * tabbarcontroller=appDelegate.tabBarVC;
    if (!tabbarcontroller.tabBar.isHidden)
    {
        return;
    }
    CGRect frm=tabbarcontroller.view.frame;
    frm.size.height -= tabbarcontroller.tabBar.frame.size.height;
    tabbarcontroller.view.frame=frm;
    tabbarcontroller.tabBar.hidden=NO;  
}
here appDelegate is = (AppDelegate *) [[UIApplication sharedApplication] delegate]
tabBarVc is UITabBarController *tabBarVC defined as property in app delegate

score 1 · Accepted Answer · answered Dec 14 '10 at 09:30

1

Turns out its not quite possible. Best way is to present a modal view (navigation) controller instead of pushing a view controller.

answered Dec 14 '10 at 09:30

Thomas Clayson

29,657
26
147
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score 0 · Answer 4 · answered Aug 01 '16 at 09:13

in NSContraints era, do NOT try to modify frame by code, bad things may happen.

Use: pushedViewController.hidesBottomBarWhenPushed = YES;

typically set hidesBottomBarWhenPushed to yes in prepareforSegue, ANYWAY before iOS actually pushes the new controller.

score -1 · Answer 5 · answered Oct 27 '10 at 10:30

-1

The easiest way is probably to set a new frame for the view:

CGRect viewFrame = view.frame;
viewFrame.size.height += 40; // Change this to the height of the tab bar
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.75];

view.frame = viewFrame;

[UIView commitAnimations];

answered Oct 27 '10 at 10:30

loomer

2,017
1
17
11

Theres just a white space at the bottom where the tab bar used to be. `self.view` has a background picture that doesn't move down and fill in where the tab bar used to be. – Thomas Clayson Oct 28 '10 at 08:03
Ok. Which view is you trying to set a new frame on? It probably doesn't work to change the frame of the view controller view, you need to add a subview. If you can post some code it would make it easier to answer your question. – loomer Oct 28 '10 at 08:27
I have viewController. self.view.backgroundColor is set to redColor and when I move the tabBarController the red color stops where the top of the tab bar used to be. :( Don't worry I've worked around it. Thanks for your help though. – Thomas Clayson Nov 01 '10 at 09:13

How to hide tab bar programmatically and then expand view to fit

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