Cocoa : Objects allocated but not properly accessible? - objective-c

Question

That's what I have :
Class A :
#import "ppCore.h"
#interface ppApplication : NSApplication {
ppCore* core;
}
#property (assign) ppCore* core;
#end
#implementation ppApplication
#synthesize core;
- (void)awakeFromNib
{
[self setCore:[[[ppCore alloc] init] retain]];
}
Class B :
#import "someObject.h"
#import "anotherObject.h"
#interface ppCore : NSObject<NSApplicationDelegate> {
ppSomeObject* someObject;
ppAnotherObject* anotherObject;
}
#property (assign) ppSomeObject* someObject;
#property (assign) ppAnotherObject* anotherObject;
#end
#implementation ppCore
#synthesize someObject, anotherObject;
- (void)applicationDidFinishLaunching:(NSNotification *)notification
{
[self setSomeObject:[[ppSomeObject alloc] init]];
[self setAnotherObject:[[ppAnotherObject alloc] init]];
}
And here's the issue :
AT SOME LATER STAGE, in ppApplication, I'm trying to have access to core.
core is there.
But, when I'm trying to access any of core's elements (e.g. [core someObject]), everything is turning up NULL (I've checked it in the Debugger)...
What am I doing wrong??

Answer 1

Have you tried declaring your objects like this:
#property (nonatomic, retain) ppCore* core;
#property (nonatomic, retain) ppSomeObject* someObject;
#property (nonatomic, retain) ppAnotherObject* anotherObject;

Answer 2

I suggest you remove the whole core thing since you can access your delegate through [[NSApplication sharedApplication] delegate] and move the setting of someObject and anotherObject to the delegate's init method.

Answer 3

Antonio is right, bit you need to manage memory as well,
#import "ppCore.h"
#interface ppApplication : NSApplication {
ppCore* core;
}
#property (nonatomic, retain) ppCore* core;
#end
#implementation ppApplication
#synthesize core;
- (void)awakeFromNib
{
ppCore* tempCore = [[ppCore alloc] init];
[self setCore: tempCore];
[tempCore release];
}
This might help.

Answer 4

Why do you believe - (void)applicationDidFinishLaunching: on your ppCore object is ever getting called? It seems to me you'll have to explicitly invoke it from somewhere.