Initializes a newly allocated dictionary using the keys and values found at a given URL.
- iOS 2.0–11.0Deprecated
- macOS 10.0–10.13Deprecated
- Mac Catalyst 13.0–13.0Deprecated
- tvOS 9.0–11.0Deprecated
- watchOS 2.0–4.0Deprecated
An URL that identifies a resource containing a string representation of a property list whose root object is a dictionary.
An initialized dictionary—which might be different than the original receiver—that contains the dictionary at
nil if there is an error or if the contents of the resource are an invalid representation of a dictionary.
The dictionary representation in the file identified by
a must contain only property list objects (
NSDictionary objects). For more details, see Property List Programming Guide. The objects contained by this dictionary are immutable, even if the dictionary is mutable.