NSData from NSKeyedArchiver to NSString

Question

I\'m trying to convert NSData generated from NSKeyedArchiver to an NSString so that I can pass it around and eventually convert it back to NSData. I have to pass this as a strin

Answer 1

iOS 9.2.1, Xcode 7.2.1, ARC enabled

base64EncodedString, dataFromBase64String: depreciated after iOS 7.0

Updated solution:

Encode to string:

id obj;

NSData *data     = [NSKeyedArchiver archivedDataWithRootObject:obj];
NSString *string = [data base64EncodedStringWithOptions:NSDataBase64EncodingEndLineWithLineFeed];

Decode to data:

NSString *string;

NSData *data    = [[NSData alloc] initWithBase64EncodedString:string options:(NSDataBase64DecodingIgnoreUnknownCharacters)];
id obj = [NSKeyedUnarchiver unarchiveObjectWithData:data];

Note: This is very useful when working with keychain to store a dictionary of key/value pairs into kSecValueData.

Hope this helps someone! Cheers.