如何从另一个函数 Objective-C 引用数组

问：

我已经在 SomeClass.h 中声明了数组，这是一个全局变量，不是吗？

@property (nonnull, nonatomic, retain) NSMutableArray *additional_tabs;

下面我声明了 2 个函数，我使用这个数组。

- (id _Nullable)initFromJSON:(NSDictionary *_Nullable)dictionary;

- (void)moreTabs:(NSMutableArray *_Nullable)a;

下面是我在函数内部使用的 if 语句。initFromJSON

if ([Tools isNonullValueForKey:[dictionary valueForKey:@"additional_tabs"]]) {
        _additional_tabs = [NSMutableArray new]; //really I need them?
        _additional_tabs = [dictionary valueForKey:@"additional_tabs"];
            
            NSLog(@"additionalTabCount (initJSON) = %lu", [_additional_tabs count]);
            
            for (int i = 0; i < [_additional_tabs count]; i++) {
                 
                 if ([Tools isNonullValueForKey:[_additional_tabs valueForKey:@"_id"]]) {
                     _additional_tab_id = [[_additional_tabs valueForKey:@"_id"] objectAtIndex:i];
                 }
                     
                 if ([Tools isNonullValueForKey:[_additional_tabs valueForKey:@"names"]]) {
                     NSDictionary *dic = [[_additional_tabs valueForKey:@"names"] objectAtIndex:i];
                     _en_additional_tab_name = [dic valueForKey:@"en"];
                     _pl_additional_tab_name = [dic valueForKey:@"pl"];
                 }
                     
                 if ([Tools isNonullValueForKey:[_additional_tabs valueForKey:@"url"]]) {
                     _additional_tab_url = [[_additional_tabs valueForKey:@"url"] objectAtIndex:i];
                 }
                
                NSLog(@"%@ %d %@ %@ %@ %@", @"pos", i,  @"id: ", _additional_tab_id, @"url: ", _additional_tab_url);
            }
        }

这有 17 个。 但在功能上：[_additional_tabs count]moreTabs

    NSLog(@"additional tabs count: %lu",[_additional_tabs count]);
    for (int i = 1; i < [_additional_tabs count]; i++) {
    [a addObject:[[VCTab alloc] initWithIdAndTypeAndUrl:[[_additional_tabs valueForKey:@"_id"] objectAtIndex:i] :VCTabAdditional :[[_additional_tabs valueForKey:@"url"] objectAtIndex:i]]];
    }
}

以零返回...看起来像是不同的数组还是清除的？[_additional_tabs count]

我将非常感谢您的帮助:) 祝一切顺利