Re: iOS 7 - Overriding NSNavigationController
Re: iOS 7 - Overriding NSNavigationController
- Subject: Re: iOS 7 - Overriding NSNavigationController
- From: David Duncan <email@hidden>
- Date: Wed, 25 Sep 2013 09:44:16 -0700
On Sep 21, 2013, at 5:14 AM, Dave <email@hidden> wrote:
> On 20 Sep 2013, at 20:41, David Duncan <email@hidden> wrote:
>
>> If you are building with the iOS 7 SDK, wantsFullScreenLayout should not be consulted for your UI layout at all by the framework. The only thing I can imagine the original engineer wanted was to avoid having to set the flag to NO manually, and thus have it done automatically.
>
> It's because another part of the code relies on it for laying out its view. Is the effect of wantsFullScreenLayout in iOS 6 described in detail somewhere? The best approach would to adapt the code to work on any iOS Version (well, 5, 6 and 7 in this case) without fiddling with wantsFullScreenLayout is this is possible?
wantsFullScreenLayout is generally a flag to request that your view controller’s view be laid out underneath translucent elements (such as a translucent navigation bar or status bar). In practice its behavior is somewhat confusing and a bit arbitrary.
Keep in mind that rather than overriding the getter, it would be simpler to just set the value as you desire in your view controller’s -init* methods.
>
>> Of course even if you build with the iOS 7 SDK and deploy to iOS 6, the flag will be honored there as specified.
>>
>
> Ultimately we want to use some iOS 7 features so it needs to be fixed in iOS 7, I'm wondering how much of a change it will be and if it's worth rewriting it so will work on 5 6 and 7.
As noted, UIKit doesn’t look at the wantsFullScreenLayout property with applications linked on the iOS 7 SDK, instead using edgesForExtendedLayout. The default value of that property is the equivalent of wantsFullScreenLayout=YES, and you should be able to set edgesForExtendedLayout to RectEdgesNone to get a similar effect to NO.
--
David Duncan
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