The version of your app responsible for creating the restoration archive.
- iOS 6.0+
- tvOS 9.0+
The value of this key is an
NSString object that identifies the version of your app (as obtained from the
CFBundle key of your app’s
Info file) was was present when the state information was saved. You can use the value of this key to help make choices about how to proceed during state restoration. For example, if the key indicates that the state is associated with an older version of your app, you might want to avoid restoring the previous state altogether or modify the restoration process more significantly.