nsdictionary

I have an NSDictionary and a CoreData Database. I want to insert the NSDictionary into the database. How can I do this (code snippets if possible)? What is the suitable type for the attribute of the dictionary ? Vincent Bernier You would need to serialize your NSDictionary to an NSData, CoreData can hold to NSData. But you won't be able to search (predicate) element of your NSDictionary. And if we think about this, NSDictionary is a collection of data. A Table in a database is kind of a collection of data. In CoreData the closest thing you got to a collection of data is NSManagedObject. So my

I've contacts array where each contact is a dictionary. Each contact has a key "contact_type" which is an NSNumber. Contact type basically represents whether its a Facebook, LinkedIn or Mail contact etc. I've a search array which holds only NSNumber of contact_type's. What I want is to make a temporary array of contacts which I want to search using my search array. I am facing trouble using NSPredicate to create searched contacts array. Can some one guide me on how to do it? NSArray *contacts = ...; //your array of NSDictionary objects NSPredicate *filter = [NSPredicate predicateWithFormat:@

What is the closest implementation of Objective-C's NSDictionary in Java? To me, it looks like HashMap<String, Object> , but I'm very new to Objective-C. Thanks NSDictionary is a class cluster (see the "Class Cluster" section in The Cocoa Fundamentals Guide ), meaning that the actual implementation is hidden from you, the API user. In fact, the Foundation framework will choose the appropriate implementation at run time based on amount of data etc. In addition, NSDictionary can take any id as a key, not just NSString (of course, the -hash of the key object must be constant). Thus, closest

How can I convert an NSArray to an NSDictionary , using an int field of the array's objects as key for the NSDictionary ? - (NSDictionary *) indexKeyedDictionaryFromArray:(NSArray *)array { id objectInstance; NSUInteger indexKey = 0U; NSMutableDictionary *mutableDictionary = [[NSMutableDictionary alloc] init]; for (objectInstance in array) [mutableDictionary setObject:objectInstance forKey:[NSNumber numberWithUnsignedInt:indexKey++]]; return (NSDictionary *)[mutableDictionary autorelease]; } Try this magic: NSDictionary *dict = [NSDictionary dictionaryWithObjects:records forKeys:[records

I have to convert an NSDictionary object into NSData and further I have to get the same NSDictionary out of the NSData object. How should I go about it? use NSKeyedArchiver To convert NSDictionary To NSData NSMutableData *data = [[NSMutableData alloc]init]; NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc]initForWritingWithMutableData:data]; [archiver encodeObject:YOURDICTIONARY forKey: YOURDATAKEY]; archiver finishEncoding]; [data writeToFile:YOURFILEPATH atomically:YES]; [data release]; [archiver release]; To get the NSDictionary back from the stored NSData NSData *data = [[NSMutableData

I have the following data saved as an NSString : { Key = ID; Value = { Content = 268; Type = Text; }; }, { Key = ContractTemplateId; Value = { Content = 65; Type = Text; }; }, I want to convert this data to an NSDictionary containing the key value pairs. I am trying first to convert the NSString to a JSON objects as follows : NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding]; id json = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil]; However when I try : NSString * test = [json objectForKey:@"ID"]; NSLog(@"TEST IS %@", test); I receive the value as NULL . Can