NSMutableArray not adding object! (using addObject: nor addObjectsFromArray)

Question

(IBAction)adicionarPastas:(id)sender {

    AbreBrowser *abre = [[AbreBrowser alloc] init];

    NSMutableArray *arquivosRecebe = [[NSMutableArray alloc] initWithArray:[abre abreBrowser]];
    [abre release];

    [arquivos addObjectsFromArray:arquivosRecebe];    
    [arquivosTableView reloadData];

    [arquivosTableView setDataSource:self];
}

Well, arquivos is declared on this files header as:

NSMutableArray *arquivos;

[abre abreBrowser] indeed returns a NSArray.

My problem is [arquivos addObjectsFromArray:arquivosRecebe]; doesn't work. I also tried addObject and it gives me the same result, i.e. nothing.

When I feed arquivos like this:

arquivos = [abre abreBrowser];

it works. But when I do a [arquivos addObject:Object] or [arquivos addObjectsFromArray:NSArray] it doesnt feeds my NSMutableArray arquivos.

Can someone tell me what I'm doing wrong?

sinha · Accepted Answer · 2011-05-15 20:56:44Z

18

It appears that you are not allocating arquivos anywhere in your object's initialization before actually sending the addObjectsFromArray message to it.

answered May 15, 2011 at 20:56

sinha

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3 Comments

Crofuncio Over a year ago

oh my god, you`re right, thank you. after allocating it, it worked. how could i miss that???? i deserve a slap on my face. god....

sinha Over a year ago

:-) The answer was in your question itself; you said - "when i feed arquivos like 'arquivos = [abre abreBrowser];' it works."

Prethen Over a year ago

This prevented me from banging my head into a wall for very long!

Pål Brattberg · Accepted Answer · 2011-05-15 20:48:58Z

0

So why don't you use that which works? arquivos = [abre abreBrowser];

Also, it seems you should switch these statements?

   [arquivosTableView reloadData];
   [arquivosTableView setDataSource:self];

To this:

   [arquivosTableView setDataSource:self];
   [arquivosTableView reloadData];

answered May 15, 2011 at 20:48

Pål Brattberg

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1 Comment

Crofuncio Over a year ago

i didnt use the way that works because i want to keep adding objects into the NSMutableArray, and using the way that works was not possible. Thanks for your help too, the previous answer solved my problem, but i`ll take your sugestion and invert those lines.

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