ios - 如何在核心数据中存储记录引用对象

我想使用Coredata以ABRecordRef的格式存储<CPRecord: 0xa2a3500 ABPerson>对象。

虽然我试图像

NSEntityDescription *entityDescriptionStrings = [NSEntityDescription entityForName:@"ContactsStrings" inManagedObjectContext:context];

ContactsStrings *contactsManagedObjectStrings = [[ContactsStrings alloc] initWithEntity:entityDescriptionStrings insertIntoManagedObjectContext:context];

        ABRecordRef recordRef = CFArrayGetValueAtIndex(contactInfoArray, i);
[contactsManagedObjectStrings setValue:(__bridge id)(recordRef) forKey:@"record"];

我崩溃了

记录我已作为Integer32数据类型。

由于未捕获的异常NSInvalidArgumentException终止了应用程序，


  原因：“属性：属性=的值的不可接受类型
  “记录”;所需类型= NSNumber；给定类型= __NSCFType;值=
  。

最佳答案

尝试这个，

ABRecordRef recordRef = CFArrayGetValueAtIndex(contactInfoArray, i);
ABRecordId recId = ABRecordGetRecordID(recordRef);
NSNumber *recordId = [NSNumber numberWithInt:(int)recId];
[contactsManagedObjectStrings setValue:recordId forKey:@"record"];

找回

//recordId is the value of record key from managedobject
ABRecordId recId = (ABRecordId)[recordId intValue];
ABRecordRef recordRef = ABAddressBookGetPersonWithRecordID(ddressBook, recId);