Making uibarbuttonitems fade

Question

I have a navigation bar that is set up and controlled completely with code. So it does not show up in IB. I have a button appear by "self.navigationitem.rightbarbutton = myButton;" An I make it go away by setting it equal to NIL. What I am wondering is how could I make it fade in and out?

score 23 · Accepted Answer · edited Nov 25 '21 at 08:06

23

I found what worked best for me

[self.navigationItem setRightBarButtonItem:myButton animated:YES];

And then

[self.navigationItem setRightBarButtonItem:nil animated:YES];

To make it fade out.

edited Nov 25 '21 at 08:06

Sharad Chauhan

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answered Jun 07 '12 at 20:51

user804306

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score 2 · Answer 2 · answered Dec 20 '16 at 08:22

2

Swift version

fade in: navigationItem.setRightBarButtonItem(myButton, animated: true)

fade out: navigationItem.setRightBarButtonItem(nil, animated: true)

answered Dec 20 '16 at 08:22

budiDino

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score 0 · Answer 3 · edited May 23 '17 at 12:01

0

Unfortunately there is no built in way to animate this for bar button items in a navigation bar. UIBarButtonItem is not a view or a control so it does not have animatable properties like alpha.

For bar button items in a UIToolbar, there is a way to animate. See this answer for details:

Is it possible to use Core Animation to fade out a UIBarButtonItem?

edited May 23 '17 at 12:01

Community

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answered Feb 02 '12 at 15:55

Age Mooij

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Making uibarbuttonitems fade

3 Answers3

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