requestorRequest object associated with the response.
codeError code for the error that occurred.
contextOptional context object that will be passed to the listener when a response is received. This parameter is
provided as a means of keeping track of requests received by the listener, when there are multiple requests outstanding.
Zurückgegebener Wert
None
This method is called when a network error has occurred. See the error enumerator for possible error codes.
Note that HTTP errors from the server are not included. They are reported via the onResponse method.