Question

I’d like one peer in a session to send an array of strings to another, connected peer. Is there a way to convert such an array into NSData or do I need to send the strings one after another?
Thanks very much.

Answer 1

An NSArray of NSString objects is a property list. You can convert it to an NSData like this:

NSError *error;
NSData *data = [NSPropertyListSerialization dataWithPropertyList:myArray
    format:NSPropertyListBinaryFormat_v1_0
    options:0
    error:&error];

You can convert the data back to a property list like this:

NSError *error;
NSArray *myArray = [NSPropertyListSerialization propertyListWithData:data
    options:NSPropertyListImmutable
    format:NULL
    error:&error];