Instance Method


Archives a given object along with all the objects to which it is connected.


func encodeRootObject(_ rootObject: Any)



The root object of the object graph to archive.


If any object is encountered more than once while traversing the graph, it is encoded only once, but the multiple references to it are stored. (See Archives and Serializations Programming Guide for more information.)

This message must not be sent more than once to a given NSArchiver object; an NSInvalidArgumentException is raised if a root object has already been encoded. If you need to encode multiple object graphs, therefore, don’t attempt to reuse an NSArchiver instance; instead, create a new one for each graph.

See Also

Archiving data

class func archivedData(withRootObject: Any) -> Data

Returns a data object containing the encoded form of the object graph whose root object is given.

class func archiveRootObject(Any, toFile: String) -> Bool

Creates a temporary instance of NSArchiver and archives an object graph by encoding it into a data object and writing the resulting data object to a specified file.

func encodeConditionalObject(Any?)

Conditionally archives a given object.