轻量级迁移完成通知

Question

I've been using lightweight migration for several versions successfully, but in my newest version I need to load some tables that are created during the migration with data after the migration completes. I imagine it's possible that when my initial UIViewController calls the method to load data into the new tables, the migration hasn't completed and the app will crash, so:

How can I determine that lightweight migration has completed?

Answer 1

The automatic lightweight migration happens when you call addPersistentStoreWithType:... with the corresponding options, and is completed when that call returns. There is no asynchronous migration in the background.