Re: app delegate +initialize
Re: app delegate +initialize
- Subject: Re: app delegate +initialize
- From: Graham Cox <email@hidden>
- Date: Thu, 8 Oct 2009 15:38:53 +1100
On 08/10/2009, at 2:39 PM, John Baldwin wrote:
The AppController has a +initialize method which initializes my user
defaults.
It's better to initialise your defaults in your app delegate's -
applicationWillFinishLaunching: method, since it is called at a
completely invariant time during the launch process.
So I'm expecting the AppController instance to be loaded and the
+initialize method to be called before my window controller is
loaded and its outlets start getting referenced.
You can't expect this. Objects loaded from a nib are not loaded in any
particular order that you can rely on.
Also, in general, relying on certain user defaults being present can
be fragile, for exactly the reasons you are finding - unknown
initialisation order. Better to design your controllers to either not
need user defaults to initialise itself, or else initialise your user
defaults at a specific known point during launch that you can rely on.
--Graham
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