Question

My hobby project is getting over my head! I am using an XML parser, which gives me a set of values
row.blurb
row.url
row.keywords
etc.

I now need to put them into an NSDictionary to populate a table, but my understanding of dictionaries is letting me down. I was expecting to be able to say something like

[exhibitors addObject:[[NSMutableDictionary alloc]initWithObjectsAndKeys:
[row.blurb],@"blurb",[row.url],@"url",[row.keywords],"keywords",nil]];

But, as none of you will be at all surprised, I get a crash. Can anyone help me with the correct way to do this?

Thanks.

Answer 1

You are providing a C string as one of the keys -> "keywords".

That is not a valid key in an NSDictionary instance. You probably intended it to be @"keywords".

To add, you are also leaking memory as you are creating an object but aren’t releasing it as you don’t have a reference. You can use the convenience method dictionaryWithObjectsAndKeys : to create an autoreleased instance so that you don’t leak.

[exhibitors addObject:[NSMutableDictionary dictionaryWithObjectsAndKeys:row.blurb, @"blurb", row.url, @"url", row.keywords, @"keywords", nil]];