NSMutableArrayaddObject似乎不起作用-NSMutableArrayaddObjectdoesn'tseemtowork

I'm really new to iOS development and I'm trying to create a simple table view, so I added a Table View Controller, added my custom class to it and now I was trying to add items.

我真的很喜欢iOS开发,我正在尝试创建一个简单的表视图,所以我添加了一个表视图控制器,添加了我的自定义类,现在我正在尝试添加项目。

So I created a new array:

所以我创建了一个新数组:

@property (nonatomic, strong) NSMutableArray *activity;

And I the viewDidLoad, I tried adding some items to the array:

我是viewDidLoad,我尝试在数组中添加一些项目:

for(int i = 0; i <20; i++) 
{
    NSLog(@"Current item: %u", i);
    Item *item = [[Item alloc] init];
    item.time = @"14:30";
    item.text = @"A simple test";
    item.startedAgo = @"yesterday";
    item.project = @"testProject";
    [self.activity addObject:item];
}

NSLog(@"Activity count: %u", [self.activity count]);

The log seems to be fine, excpet when I try to output the lenght of the array, it stays 0

日志似乎很好,当我尝试输出数组的长度时,它会保持为0

2012-05-02 14:12:50.772 coop_dev[15352:f803] Current item: 0

2012-05-02 14:12:50.772 coop_dev [15352:f803]当前项目:0

...

2012-05-02 14:12:50.783 coop_dev[15352:f803] Current item: 19

2012-05-02 14:12:50.783 coop_dev [15352:f803]当前项目:19

2012-05-02 14:12:50.784 coop_dev[15352:f803] Activity count: 0

2012-05-02 14:12:50.784 coop_dev [15352:f803]活动计数:0

Am I missing something here?

我在这里错过了什么吗?

2 个解决方案

self.activity = [[[NSMutableArray alloc]init]autorelease];

self.activity = [[NSMutableArray alloc] init];