Type Property

restorableStateKeyPaths

Returns an array of key paths representing the restorable attributes of the responder.

Declaration

@property(class, readonly, copy) NSArray<NSString *> *restorableStateKeyPaths;

Return Value

An array of NSString objects, each of which contains a key path to one of the responder’s attributes.

Discussion

You can use this method instead of, or in addition to, the encodeRestorableStateWithCoder: and restoreStateWithCoder: methods to save and restore the state of your responder. The key paths you return must refer to attributes that are key-value coding and key-value observing compliant. To learn more about these mechanisms, see Key-Value Coding Programming Guide and Key-Value Observing Programming Guide.

When changes are detected, the specified attributes are automatically written to disk with the rest of the application’s interface-related state. At launch time, the attributes are automatically restored to their previous values.

See Also

Handling Window Restoration

- encodeRestorableStateWithCoder:

Saves the interface-related state of the responder.

- restoreStateWithCoder:

Restores the interface-related state of the responder.

- invalidateRestorableState

Marks the responder’s interface-related state as dirty.