快速将JSON检索的int32解析为核心数据类

Question

I have a Core Data class which is being populated via a JSON rest API call using Swift.

I can parse the dictionary without any problems for strings, but cannot parse the ID field which is an Int32.

My code is:

class Job: NSManagedObject {
    @NSManaged var id: Int32
}


if let id = resultDict["JobID"] as? NSNumber {
    job.id = Int32(id) // THIS LINE IS CAUSING THE ERROR 
}

The error that I'm getting when trying to build is: 'Could not find an overload for 'init' that accepts the supplied arguments"

Answer 1

Int32 doesn't have an initializer that takes an NSNumber . You can use the intValue property of NSNumber directly though; it returns an Int32 :

job.id = id.intValue