Return an enumeration of all prefixes for a given URI whose declarations are active in the current context. This includes declarations from parent contexts that have not been overridden.

This method returns prefixes mapped to a specific Namespace URI. The xml: prefix will be included. If you want only one prefix that's mapped to the Namespace URI, and you don't care which one you get, use the NamespaceSupport.GetPrefix(string) method instead.

Note: the empty (default) prefix is never included in this enumeration; to check for the presence of a default Namespace, use the NamespaceSupport.GetURI(string) method with an argument of "".

[Android Documentation]