CFPreferencesAppSynchronize(_:)
Writes to permanent storage all pending changes to the preference data for the application, and reads the latest preference data from permanent storage.
Declaration
func CFPreferencesAppSynchronize(_ applicationID: CFString) -> BoolParameters
- applicationID:
The ID of the application whose preferences to write to storage, typically Kcfpreferencescurrentapplication. Do not pass
NULLor Kcfpreferencesanyapplication. Takes the form of a Java package name,com.foosoft.
Return Value
true if synchronization was successful, otherwise false.
Discussion
Calling the function CFPreferencesSetAppValue(_:_:_:) is not in itself sufficient for storing preferences. The CFPreferencesAppSynchronize(_:) function writes to permanent storage all pending preference changes for the application. Typically you would call this function after multiple calls to CFPreferencesSetAppValue(_:_:_:). Conversely, preference data is cached after it is first read. Changes made externally are not automatically incorporated. The CFPreferencesAppSynchronize(_:) function reads the latest preferences from permanent storage.