Using NSKeyedArchiver to store custom data model

Question

I\'m working on a rss reader. It is just a tableview and each cell shows a custom data model RSSEntry. And I have a NSMutableArray allEntries which contains all RSSEntry I got f

Answer 1

You could store an NSDictionary as following

NSDictionary *Your_NSDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
                               @"Obj1", @"Key1",
                               @"Obj2", @"Key2", nil];
//store dictionary
NSMutableData *yourData = [[NSMutableData alloc] init];
NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:yourData];
[archiver encodeObject:Your_NSDictionary forKey: @"key"];
archiver finishEncoding];
[yourData writeToFile:@"FilePath" atomically:YES];
[yourData release];
[archiver release];


//Load dictionary

NSData *yourData = [[NSMutableData alloc]initWithContentsOfFile:@"FilePath"];
NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:yourData];
Your_NSDictionary = [unarchiver decodeObjectForKey: @"key"];
[unarchiver finishDecoding];
[unarchiver release];
[yourData release];