NSNotification 到达时对象已损坏

Question

我以这种方式发布通知：

...
IVSession *newSession = [[[IVSession alloc] initWithDictionary:propertyDict] autorelease];     

NSDictionary *notifParams = [NSDictionary dictionaryWithObject:newSession  forKey:@"session"];        
NSNotification *newSessionNotif = [NSNotification notificationWithName:IVNewSessionNotificaiton object:self userInfo:notifParams]; 
...

IVSession 接口：

@interface IVSession : IVMappableObject {
    NSString *_ssid;
    NSNumber *_uid;    
}

@property (nonatomic,retain) NSString *sessionID;
@property (nonatomic,retain) NSNumber *userID;

和 init 方法：

- (id)initWithDictionary:(NSDictionary*)dict
{
    if ((self = [super init]))
    {
        NSDictionary *mapping = [self elementToPropertyMappings];
        for (NSString *key in mapping)
            [self setValue:[dict objectForKey:key] forKey:[mapping objectForKey:key]];
    }    
    return self;
}

但是在调用此通知的方法中，我收到损坏的 newSession 对象 - 其属性 ssid 和 uid 是无效摘要：

-(void)didOpenSession:(NSNotification *)newSession
{
    if (receivedSession)
        [receivedSession release];
    receivedSession =  [[newSession userInfo] objectForKey:@"session"];
} 

我的错在哪里？

Answer 1

代码对我来说看起来不错...您是否在组装之后、发布通知之前验证了 IVSession 对象包含您期望的内容？