Items in NSDictionary returns NULL

Question

I'm using MGTWitterEngine and I cannot figure out why my dictionary items are returning null.

I have this method:

- (void)searchResultsReceived:(NSArray *)searchResults forRequest:(NSString *)connectionIdentifier{
NSDictionary *result = [searchResults objectAtIndex:0];
NSString *fromUser = [result valueForKey:@"from_user"];
NSLog(@"from user: %@", fromUser);
}

And for some reason, my NSLog always displays "from user: NULL". I can do an NSLog of searchResults which dumps the contents of the search correctly, but I can't figure out how to parse the information. Any help would be greatly appreciated.

NSLog displays null if the value is nil. NSDictionary returns nil if the key couldn't be found. — , Jun 04 '11 at 11:44

score 1 · Accepted Answer · edited May 23 '17 at 10:34

1

Look at this question: Parsing Search Result with MGTwitterEngine in Objective C

They use:

- (void)searchResultsReceived:(NSArray *)searchResults 
                   forRequest:(NSString *)connectionIdentifier
{
    if ([searchResults count] > 0)
    {
        NSDictionary *result = [searchResults objectAtIndex:0];

        NSString *fromUser = [result valueForKey:@"from_user"];
        NSString *fromUserID = [result valueForKey@"from_user_id"];
        // ...
        NSString *text = [result valueForKey@"text"];

        NSLog(@"User %@(%@): %@", fromUser, fromUserID, text);
    }
}

It is similar to your code with a check on searchResults count.

edited May 23 '17 at 10:34

Community

1
1

answered Jun 04 '11 at 11:43

DreamOfMirrors

2,147
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Yes, but I know for certain searchResults contains data. I can do an NSLog of it and it is an array with 1 entry of all search results. [searchResults count] is 1, and in my case it should always execute because I don't check for it's count. – Ngoan Nguyen Jun 04 '11 at 17:21
1

I figured it out, so stupid. My dictionary contained subItems and the key I was searching for was a subitem, not one of the main items. – Ngoan Nguyen Jun 04 '11 at 19:21
@Nguyen.. So… then **HOW** do you get to them, then? I've worked with plists and XML for years, yet these f-ing dictionaries are a headache to work with! – Alex Gray Dec 03 '11 at 01:38

Items in NSDictionary returns NULL

1 Answers1