如何访问NSArray中的某个值？

Question

I have an array called someArray . I would like to access the name value of the NSArray . I'm trying to access it using the following, but with out any luck. How do I do it properly?

cell.textLabel.text = [[someArray objectAtIndex:indexPath.row] objectForKey:@"name"];

some array {
    haserror = 0;
    headers =     {
        code = 0;
        haserror = 0;
        nodeid = "fe1.aaaaaa.2.undefined";
        time = 16;
    };
    results =     (
                {
            coords =             (
                "44.916667",
                "8.616667"
            );
            id = 2;
            key = alessandria;
            name = Alessandria;
            state = Piemonte;
            zip = 1512;
        },
                {
            coords =             (
                "43.616944",
                "13.516667"
            );
            id = 3;
            key = ancona;
            name = Ancona;
            state = Marche;
            zip = 601;
        },

}

Answer 1

As far as i see from you data model, the key name is a node under the key results . You can use this data model as a dictionary map, the code snippet below must give you what you need..

NSDictionary *myObject = [[someArray objectAtIndex:indexPath.row] objectForKey:@"results"];
cell.textLabel.text = [myObject objectForKey:"name"];

IMPORTANT NOTE: If you have some lopps or some other mechanisms for receiving data, there may be more efficent ways for your sıolution, so please give some more additional info about what you are exactly tryin to do

Answer 2

As others have noted, someArray is a dictionary while results is a key pointing to an array inside of your dictionary. If you want an array of all of the name fields in your results array, you could use valueForKeyPath: on the someArray variable, like this:

NSArray *names = [someArray valueForKeyPath:@"results.name"];

The names variable should now contain "Alessandria", and "Ancona" from the data set your show in your example code.