Core data How to view Objectid

Objectid is the unique ID identifier provided by core data for each data object, and the method for obtaining Objectid and printing is as follows:

Steps:

1. Get ManagedObject

2. ManagedObject-ObjectID

3. URL ObjectId

4. URL-String

        Nsmanagedobject *managedobject = youmanagedobject;//Gets the object pointer        nsmanagedobjectid *objid = [ManagedObject objectid];//get ObjectID                nsurl * uri = [objId urirepresentation];//objectid-> URL        nsstring *s = [URI absolutest Ring];//url-> String                NSLog (@ "uri =%@", s);//print Objectid corresponding string

Result instances

URI = X-coredata://8fa76f17-3846-4801-b398-80ee9e13ea14/event/p1uri = x-coredata:// 8fa76f17-3846-4801-b398-80ee9e13ea14/event/p2uri = X-coredata://8fa76f17-3846-4801-b398-80ee9e13ea14/event/p3

Core data How to view Objectid