How to get the height of the tabbar programmatically?

Question

I've found out that the height of a UITabBar is 49px (or 50px, depending on the source).

Because I don't like to use too much hard-coded values in my code I was wondering if it is possible to retrieve the height of the tabbar programmatically.

Kind regards,
Niels R.

PS: The reason I'm asking is because I have a view controller (with a list view containing text fields) that is either simply pushed by the navigationcontroller (pushViewController) or presented as a modal (presentModalViewController). As soon as the keyboard show up, the size of the view is reduced, but I have to take into account that the tabbar is only visible when the view controller is pushed and not presented as a modal.

score 149 · Accepted Answer · edited May 17 '18 at 22:04

149

I don't totally understand your P.S., but you can do:

tabBarController?.tabBar.frame.size.height

edited May 17 '18 at 22:04

shim

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answered Mar 22 '11 at 07:45

Mason

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Thanks. I'm happy that I'd figured it out myself in the meantime. Sometimes I get stuck on the most stupid things. :p – Niels R. Mar 22 '11 at 08:34
So what's the result? 50 or 49? – Anonymous White Oct 24 '12 at 08:10
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I think now it is: self.tabBarController?.tabBar.frame.size.height – Marco Pappalardo Mar 09 '17 at 09:56
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@NaXir With iPhone X that is no longer the case, so this is now very relevant. – nickdnk Nov 22 '17 at 15:52

score 14 · Answer 2 · answered Jun 16 '15 at 18:40

14

If you want to get the standard height for the UITabBar control then you can do:

    UITabBarController *tabBarController = [UITabBarController new];
    CGFloat tabBarHeight = tabBarController.tabBar.frame.size.height;

answered Jun 16 '15 at 18:40

Federico Jordan

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I love this answer. This is my favorite answer. I recommend this answer if you are using Objective C – Brian Whipp Mar 30 '17 at 03:40
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This is a bad answer though.. You create a completely new UITabBarController from scratch, which is entirely unnecessary and wasteful. If you need the height of a TabBar, you should get the height of your current tabBar. – Sti Sep 21 '17 at 13:33
Awesome also fixed iPhone X wrong tabbar size problem on first app install. – ergunkocak May 04 '19 at 13:47

score 10 · Answer 3 · answered Jun 19 '15 at 10:48

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prettier

CGRectGetHeight(self.tabBarController.tabBar.frame)

answered Jun 19 '15 at 10:48

Nick Ginanto

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Thank you. And guided by xcode 8 beta it changed it to 'let tabBarHeight = (self.tabBarController?.tabBar.frame)!.height' – kometen Jun 27 '16 at 12:12
@kometen - be conscious of the force unwrap (ie: `!`) there, it can cause unwanted crashes – NSTJ Nov 19 '16 at 05:37

score 6 · Answer 4 · answered Oct 09 '17 at 12:08

6

check this in your vc

bottomLayoutGuide.length

answered Oct 09 '17 at 12:08

Adam Smaka

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As of iOS 11: "Use view.safeAreaLayoutGuide.bottomAnchor instead of bottomLayoutGuide.topAnchor" – d4Rk Nov 06 '19 at 12:30
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So, basically this should be `self.view.safeAreaInsets.bottom` now. – d4Rk Nov 06 '19 at 13:13

score 3 · Answer 5 · answered Jun 01 '17 at 04:41

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In Swift 3, you can retrieve the height of the UITabBar with this code below.

self.tabBarController!.tabBar.frame.size.height

Which will return a CGFloat value of the height

answered Jun 01 '17 at 04:41

Cyril

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score 1 · Answer 6 · answered Mar 22 '11 at 07:46

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If an object is based on UIView (which most visual elements in the library are), you can get the size from the ivar "frame".

answered Mar 22 '11 at 07:46

Hack Saw

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score 1 · Answer 7 · edited Sep 12 '12 at 05:20

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UITabBar is inherited from UIView as long as you mhave access to your UITabBar instance you can access and modify the frame of UITabBar,

CGRect myRect = myTabBar.frame;

edited Sep 12 '12 at 05:20

Maulik

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answered Mar 22 '11 at 07:48

Jhaliya - Praveen Sharma

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I have a TabbarController subclass, this line gives me full view frame say 320x480 – Nikesh K Aug 31 '18 at 03:08

score 0 · Answer 8 · answered Mar 16 '22 at 14:36

0

Try to use the intrinsicContentSize property of the tab bar like this

let tabBarHeight = self.tabBarController.tabBar.intrinsicContentSize.height

answered Mar 16 '22 at 14:36

iPhoneDeveloper

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How to get the height of the tabbar programmatically?

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