Re: Loading a class with a specific superclass from a bundle
Re: Loading a class with a specific superclass from a bundle
- Subject: Re: Loading a class with a specific superclass from a bundle
- From: Negm-Awad Amin <email@hidden>
- Date: Tue, 5 Aug 2008 21:00:30 +0200
Am Di,05.08.2008 um 20:41 schrieb Bill Bumgarner:
On Aug 5, 2008, at 11:19 AM, Elan Feingold wrote:
I can load the principal class of a bundle with:
NSBundle* bundleToLoad = [NSBundle bundleWithPath:@"..."];
Class exampleClass = [bundleToLoad principalClass]);
However, I have a situation where I have a bundle that has a class
*without* a principal class, but it has a class that is a subclass
of a specific other class. Is there any way to iterate through
classes offered by a bundle and pick out the ones that derive from
a specific superclass?
"class *without* a principal class" doesn't make sense.
- all bundles have a principal class, automatically (and semi-
randomly) chosen if you don't specify it
- all classes have a super class (unless it is a root class)
If you go to the target inspector's Properties tab in your Xcode
project, you can specifically set the bundle's principal class.
b.bum
If I understood this mail correct, he has a bundle with a class C,
which is not the principal class, but a (single?) subclass of another
(propably abstract?) class T (which can change). He does not know the
name of C and tries to iterate through all classes in the bundle to
find it.
- (Class)loadSubclassOfClass:(Class)T {
// ???
}
IIRC, somebody wrote code to extract classes (on a first step class
names) from a bundle. I couldn''t google it. :-(
I understand the problem, that he does not know the subclass C of the
bundle class T in the loading application. But the programmer of the
bundle knows "his" class hierarchy. So he can write a principal class
with the intention to return all classes in that bundle. The principal
class only needs a class methode +myClassHierarchy.
Amin
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Amin Negm-Awad
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