I am trying to pull the value based on the key in a NSArray in Objective-C that are passed in a URL. How do I get the value form the key?

Question

I am pulling in the components from a NSURL using componentswithurl: resolvingagainstbaseurl:. This gives me an NSArray of query items, but I cannot get the value for each object out of the array based on the key. I am doing this for a custom url that is launching my app from another app. I am doing something like:

Incoming url: something://init?item1=xxxx&item2=yyy&item3=www2&item4=sss

NSURLComponents *comp = [NSURLComponents componentsWithURL:url resolvingAgainstBaseURL:true];
NSAray *compDict = comp.queryItems;

Thus giving me a list of object with a key value pair.

compDict[0] =
    name = item1
    value = xxxx

and so on. I am trying to get the value based on the name(key) using:

NSString *value = [compDict valueForKey:@"item1"];

but this gives me an error - [<NSURLQueryItem> valueforundefinedkey:]this class is not key value coding-compliant for key item1.

Can someone help me out on this.