How do I show/hide a UIBarButtonItem?

Question

I created a toolbar in IB with several buttons. I would like to be able to hide/show one of the buttons depending on the state of the data in the main window.

Answer 1

One way to do it is use the initWithCustomView:(UIView *) property of when allocating the UIBarButtonItem. Subclass for UIView will have hide/unhide property.

For example:

1. Have a UIButton which you want to hide/unhide.

2. Make the UIButtonas the custom view. Like :

UIButton*myButton=[UIButton buttonWithType:UIButtonTypeRoundedRect];//your button

UIBarButtonItem*yourBarButton=[[UIBarButtonItem alloc] initWithCustomView:myButton];

3. You can hide/unhide the myButton you've created. [myButton setHidden:YES];