Type Method


Returns a Foundation object from JSON data in a given stream.


class func jsonObject(with stream: InputStream, options opt: JSONSerialization.ReadingOptions = []) throws -> Any



A stream from which to read JSON data.

The stream should be opened and configured.


Options for reading the JSON data and creating the Foundation objects.

For possible values, see JSONSerialization.ReadingOptions.

Return Value

A Foundation object from the JSON data in stream.


The data in the stream must be in one of the 5 supported encodings listed in the JSON specification: UTF-8, UTF-16LE, UTF-16BE, UTF-32LE, UTF-32BE. The data may or may not have a BOM. The most efficient encoding to use for parsing is UTF-8, so if you have a choice in encoding the data passed to this method, use UTF-8.

See Also

Creating a JSON Object