Name of the activity to be launched to manage application's space on device. The specified activity gets automatically launched when the application's space needs to be managed and is usually invoked through user actions. Applications can thus provide their own custom behavior for managing space for various scenarios like out of memory conditions. This is an optional attribute and applications can choose not to specify a default activity to manage space.

Must be a string value, using '\\;' to escape characters such as '\\n' or '\\uxxxx' for a unicode character.

This may also be a reference to a resource (in the form "@[package:]type:name") or theme attribute (in the form "?[package:][type:]name") containing a value of this type.

[Android Documentation]