如何在iOS中更新应用程序时如何避免数据丢失？

Question

When using PhoneGap, do users lose all of their saved data when they update an iOS app downloaded from iTunes?

I am hoping that anything stored in either Webstorage feature in Construct 2 will be preserved whenever someone downloads a new version of the app from iTunes, but I'm afraid to build a whole Apps only to have a bunch of upset users when they update the app. I know when I build an app in Objective CI have to go through some hoops to get the Core Data store to migrate correctly.

The other option is to mirror the data to an external server/database, but I want to avoid that expense and complication if I can.

Answer 1

If you change anything in the tables in CoreData then you would have to implement migration for the tables by creating a new version (check apple's documentation here: Lightweight Migration )

Otherwise if you don't change anything updating the app would not make the user lose any data.