Cannot addObject into a NSMutableArray?

Question

I have a question about the objective-C. I use the following code to add a contains from an array to another array. However, the second array is null. Can anyone help me? Thank you.

titleArray = [[csvDataArrayString objectAtIndex:0] componentsSeparatedByString:@","];

NSString *title;

dataTitleArray = [[NSMutableArray alloc] init];  // after add this statement it's ok

for(int i=0; i<[tTitleArray count]; i++)
{
    title = [csvPersonalTitleArray objectAtIndex:i];
    [dataTitleArray addObject:title];  // the dataTitleArray is null
}

If dataTitleArray is nil, then you'll need to expand your question to show where you're creating dataTitleArray and how it comes to be in the snippet you've quoted. — Jarret Hardie
– Jarret Hardie, Commented Aug 27, 2010 at 1:39
Or all these lines of code actually next to each other in this order, as written here, or are you picking and choosing from different parts of your program? I suspect the latter, and if so, there's no way we're going to find the bug from random snippets. — Chuck
– Chuck, Commented Aug 27, 2010 at 1:40
@Jarret Hardie, Chuck, thank you for your reply. It's solved Thank you. — Questions
– Questions, Commented Aug 27, 2010 at 1:46

Ben Zotto · Accepted Answer · 2010-08-27 01:34:00Z

1

You haven't shown that you're actually allocating dataTitleArray anywhere. Are you? It's not clear what you're trying to do.

answered Aug 27, 2010 at 1:34

Ben Zotto

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2 Comments

Questions Over a year ago

thank you for your reply. I edited the post. I just want to add an array to another array.

Ben Zotto Over a year ago

[oneArray addObjectsFromArray:anotherArray]

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