Op 26 May 2009, om 09:56 heeft John Ku het volgende geschreven:

Oh so the very first return value from a Dictionary is not actually a
string?
NSString *itemA = [DictionaryA valueForKey:@"FirstProcessIdentifier"];

I've check the apple document, valueForKey returns an ID... so it return an
object? how do I proceed?
If i cast it as NSString it gives me an error.

Simple - sort your type error out! The dictionary contains at least one number. This means that either you're creating it wrong, or you're trying to get values out of it wrong...

In the latter case you might want to try something like

id item = [dictionaryA valueForKey:@"FirstProcessIdentifier"];

if ([item isKindOfClass:[NSString class]])
{
        // do stuff
}
else if ([item isKindOfClass:[NSNumber class]])
{
        // do other stuff
}
...


Bob
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