NSMutableArray count equals 0 when add object

Question

I have the next code:

-(void)accountAdded:(GoogleMailAccount *)account
{
    DLog(@"accountAdded %@ ",account.emailAddress);

     DLog(@"_accounts addObject %@ ",account);
    [_accounts addObject:account];

     DLog(@"_accounts count %d",[_accounts count]);

    [_subFolders setValue:[account subscribedFolders] forKey:account.emailAddress];

    [self refreshTableViewTree];
}

and the next log output for it:

2013-08-02 00:57:28.009 MailClient[9327:11603] accountAdded iosmailclienttest@gmail.com 
2013-08-02 00:57:28.010 MailClient[9327:11603] _accounts addObject <GoogleMailAccount: 0x7db94f0> 
2013-08-02 00:57:28.011 MailClient[9327:11603] _accounts count 0

Why accounts size = 0? (It's a real problem for me :( .What I don't see???)

Is the array _accounts nil? In ObjC you can send messages to nil, so it wouldn't give an error if it was nil and you called a method on it — guitarflow, Aug 01 '13 at 22:10
I get it. My bad - I forgot again about the NullPointerException missing in the language. Thanks. — pvllnspk, Aug 01 '13 at 22:12
@Abdullah Shafique - actually Tom's "Is _accounts != nil?" was enough for understanding my dummy problem. In any case - thanks. — pvllnspk, Aug 01 '13 at 22:16

Abdullah Shafique · Accepted Answer · 2013-10-16T17:24:14.277

3

In start of method:

 if(!_accounts) _accounts = [[NSMutableArray alloc]init];

Or you can do in:

-(NSMutableArray *)accounts
{
    if(!_accounts) _accounts = [[NSMutableArray alloc]init];
    return _accounts;
}

edited Oct 16 '13 at 17:24

answered Aug 01 '13 at 22:09

Abdullah Shafique

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4

A better solution would be to do that in the class's designated initializer. – bbum Aug 01 '13 at 23:00
@bbum That is true but this way works. – Abdullah Shafique Aug 02 '13 at 05:12

NSMutableArray count equals 0 when add object

1 Answers1