Hi,
I'm running into a binding issue is my main application so I wrote a small
test app to try to track down the problem: primarily that I cannot get the
UI to update appropriately when it is configured to observe my model objects
via bindings.
// AppDelegate.h
@class ModelObject;
@interface AppDelegate : NSObject {
ModelObject *modelObject;
int _someProperty;
}
@property int someProperty;
- (IBAction)doSomething:(id)sender;
@end
// AppDelegate.m
@implementation AppDelegate
@synthesize someProperty = _someProperty;
- (void)awakeFromNib
{
modelObject = [[ModelObject alloc] init];
}
- (void)dealloc
{
[modelObject release];
[super dealloc];
}
- (void)doSomething:(id)sender
{
[modelObject changeValue];
}
// ModelObject.h
@interface ModelObject : NSObject {
int _someProperty;
}
@property int someProperty;
- (void)changeValue;
@end
// ModelObject.m
@implementation ModelObject
@synthesize someProperty = _someProperty;
- (id)init
{
if (nil == (self = [super init]))
return nil;
self.someProperty = 10;
return self;
}
- (void)changeValue
{
self.someProperty = (_someProperty == 10) ? 5 : 10;
}
@end
In my xib I I have an object that represents my AppDelegate. I bind the
value of an NSLabel to the AppDelegate's modelObject.someProperty keypatch.
But no matter what I do the value is never updated in the UI. Do you see
something obvious that I am missing?
This is a retain/release Cocoa app running on 10.5.6 using Xcode 3.1.2.
Any guidance would be appreciated,
CxT
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