Unrecognized selector error when indexing into a dictionary of arrays

Question

I have a dictionary of arrays that is causing __NSCFDictionary objectAtIndex: errors.

Can someone tell me why? The dictionary clearly has at least 1 array a

Answer 1

In your case [[json objectForKey:@"words"] objectForKey:@"word"]; is returning a dictionary and not an array. Try doing the following,

id wordParam = [[json objectForKey:@"words"] objectForKey:@"word"];

if ([wordParam isKindOfClass:[NSArray class]]) {
  NSDictionary *word = [(NSArray *)wordParam objectAtIndex:0];
} else if ([wordParam isKindOfClass:[NSDictionary class]]) {
  NSDictionary *word = (NSDictionary *)wordParam;
} else {
  NSLog(@"error. %@ is not an array or dictionary", wordParam);
}

Your response string also shows that value for word is,

{"rowsreturned":0,"id":"-1","date":"","word":"","term":"","definition":"","updated_on":""}

which is a dictionary with key value pairs as rowsreturned:0, id:-1 etc..