Question

What is the best way to store an MKCoordinateRegion using core data? I assume there is a way to convert this to binary data somehow??

Many thanks

Jules

Answer 1

MKCoordinateRegion region;

// region to NSData
NSData *data = [NSData dataWithBytes:&region length:sizeof(region)];    

// NSData to region
[data getBytes:&region length:sizeof(region)];

This works in any iOS version, for any struct, with Core Data, NSUserDefaults, or NSKeyedArchiver. It is portable between any system running on the same architecture (all iOS versions run on little-endian 32 bit).
If you use this for archiving, an alternative is subclassing NSCoder or create a NSCoder category.