Re: UINavigationBar appearance not updating
Re: UINavigationBar appearance not updating
- Subject: Re: UINavigationBar appearance not updating
- From: Matt Neuburg <email@hidden>
- Date: Fri, 13 Apr 2012 11:32:04 -0700
On Wed, 11 Apr 2012 22:24:45 +0800, Roland King <email@hidden> said:
>
>To do it I'm using the UIAppearance protocol, here's the method which does the work.
>
>-(void)updateTintsForICloud
>{
> BOOL usingICloud = [ [ HIPSettings sharedSettings ] usingICloud ];
> [ [ UINavigationBar appearance ] setTintColor:usingICloud ? [ UIColor colorWithRed:0 green:0 blue:.3 alpha:1.0f ] : [ UIColor clearColor ] ];
>}
>
>it doesn't actually update the on-screen nav bar, nor any subsequent navbar pushes
Correct. As my book tells you, "The rule seems to be that sending a message to an appearance proxy will affect _future_ instances of that class, but it won't spontaneously alter the look of an object that is _currently visible_ in the interface. The look of an existing object will be changed, however, if that object is refreshed somehow." I suspect (as the book goes on to say) that using UIAppearance to change the look of an existing widget is a misuse. You want to change the way an existing widget looks, just change it. m.
--
matt neuburg, phd = email@hidden, <http://www.apeth.net/matt/>
A fool + a tool + an autorelease pool = cool!
Programming iOS 5! http://shop.oreilly.com/product/0636920023562.do
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