Question

If I NSLOG() the array that I’m trying to search I get this…

(
    {
    id = 101323790;
    "screen_name" = AmyBurnett34;
},
    {
    id = 25073877;
    "screen_name" = realDonaldTrump;
},
    {
    id = 159462573;
    "screen_name" = ecomagination;
},
    {
    id = 285234969;
    "screen_name" = "UCB_Properties";
},
    {
    id = 14315150;
    "screen_name" = MichaelHyatt;
}
)

This is fine but what I need to do is to be able to have a method that lets me put in an id and then it returns the matching screen_name as an NSString. How could I do this is the array is called.

I think NSPredicate is what I’m looking for but I’m not sure…

NSArray *twitterInfo;

Answer 1

Yep, NSPredicate is what you want. Something like this:

NSString yourID; // assume this contains the id you want
NSPredicate *pred = [NSPredicate predicateWithFormat:@"id = %@", yourID];
NSString *screenName = [[[twitterInfo filteredArrayUsingPredicate:pred] lastObject] objectForKey:@"screen_name"];