Question

I am working on an application where the user is able to draw on the screen with their finger. I am using UIBezierPath for this. I need to persist this data which is an NSArray containing multiple BezierPath objects. What is the best way to go about this? Store in coredata, store in a file using NSData? Much obliged.

Answer 1

Are you expecting to have to store multiple objects? Will you need to be able to fetch them based on some filter or ordering? I recommend using Core Data to save yourself a decent amount of work in packing/unpacking the data. There isn’t really a reason to store it in a file.

edit:

As the other answer said, you just archive it to NSData. The UIBezierPath class adheres to the NSCoding protocol so you can do something like this to archive it:

NSData *bezierData = [NSKeyedArchiver archivedDataWithRootObject:bezierPath];

You can persist that NSData object in Core Data.

To decode the archive, assuming we have a bezierData NSData object, you can do something like:

UIBezierPath *bezierPath = [NSKeyedUnarchiver unarchiveObjectWithData:bezierData];