Integer store value is negative

Question

I have a Core Data model that contains an id field which is a Integer 16 .

I noticed that the app was saving some object with a negative value in that field

For instance (from sqlite3 command line):

2|1|1|-32223||9|424968994|424968994|step`

I thought I'd switch to Integer 32 in order to fix it but the problem still remains. Object are still saved with a negative value in that field. I'm not quite sure why.

Was that right to switch to Integer 32 ? Should have this fixed the problem?

Edit: Example of value I want to save

For example the value I am storing is 33239 but it's saved as -32297

Answer 1

由于unsigned long与Integer32和Integer64兼容，您应该传递这种类型的 var ( unsigned long ) 以保存在CoreData 。

Answer 2

I have a similar issue.I am storing the 33675 integer value in CoreData but when i retrieve i got value like -26532.

In My case i defined my integer value as type int16 so range of int16 is -32,768 to 32,767 when i change my variable from int16 to int64 its resolved my issue.

for reference : Swift - Data Types