- iOS 7.0+
- macOS 10.9+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
The object to set for the given key, or
nil to remove an existing entry in the dictionary.
The key to use to store the given object.
Use this method to set a value in the
userInfo dictionary, with appropriate KVO notification for properties whose values can depend on values in the user info dictionary, like
Supply a value of
nil to remove an existing dictionary entry for a given key.
Indicates whether the tracked progress is indeterminate.
A string identifying the kind of progress being made.
A dictionary of arbitrary values associated with the receiver.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.Learn more about using Apple's beta software