NSMutableArray addObject不影响计数？

Question

有人能告诉我为什么即使我正在添加对象，log [self.giftees count]仍会返回0吗？

头：

#import <UIKit/UIKit.h>

@interface Test2AppDelegate : NSObject <UIApplicationDelegate>  
{
    UIWindow *window;
    NSMutableArray *giftees;
}

@property (nonatomic, retain) UIWindow *window;
@property (nonatomic, retain) NSMutableArray *giftees;

@end

从didFinishLaunchingWithOptions调用：

- (void)bootstrapGiftees
{
    NSArray *gifteeNames = [NSArray arrayWithObjects:@"Jesse",,nil];

    for (NSString *gifteeName in gifteeNames)
    {
        GifteeModel *g = [[GifteeModel alloc] init];
        g.name = gifteeName;

        [self.giftees addObject:g];
        NSLog(@"giftees count = %d", [self.giftees count]);
        [g release];
}
}

Answer 1

“礼品”是否已初始化？如果它是零，[giftees count]也将返回0

Answer 2

因为你很可能根本没有初始化giftees数组，所以当代码运行时它仍然是零。