Bug 2766 - UIBarButtonItem.CustomView cannot be set to null.
Summary: UIBarButtonItem.CustomView cannot be set to null.
Status: RESOLVED FIXED
Alias: None
Product: iOS
Classification: Xamarin
Component: Xamarin.iOS.dll ()
Version: 5.0
Hardware: PC Mac OS
: --- normal
Target Milestone: Untriaged
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2012-01-06 19:46 UTC by JohanO
Modified: 2012-01-10 10:26 UTC (History)
2 users (show)

Tags:
Is this bug a regression?: ---
Last known good build:

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Status:
RESOLVED FIXED

Description JohanO 2012-01-06 19:46:04 UTC
I have some code that changes the custom view of a UIBarButtonItem. The problem is I want to set it back to null.... Observe the following code.

var act = new UIActivityIndicatorView(UIActivityIndicatorViewStyle.White);
act.StartAnimating();
button.CustomView = act;

... Do something in a thead ...

// Presumably the button will return to it's original state...
button.CustomView = null; // Raises ArgumentNullException
Comment 1 JohanO 2012-01-06 19:54:32 UTC
Hi, in the interim I have added the following code where the "button.CustomView = null" used to be and it seems to work. Let me know when the bug is fixed so I can remove the ugliness...

Workaround....

if(this.IsDirectBinding)
				{
					Messaging.void_objc_msgSend_IntPtr(button.Handle, new Selector("setCustomView:").Handle, IntPtr.Zero);
				}
				else
				{
					Messaging.void_objc_msgSendSuper_IntPtr(button.SuperHandle, new Selector("setCustomView:").Handle, IntPtr.Zero);
				}
Comment 2 Sebastien Pouliot 2012-01-10 10:26:45 UTC
You're right, this property should be nullable. This will be part of the next MonoTouch 5.0.x (5.0.6) and 5.1.x releases. 

Thanks for the bug report.