If set, specifies that this TextView has an input method. It will be a textual one unless it has otherwise been specified. For TextView, this is false by default. For EditText, it is true by default.

Must be a boolean value, either "true" or "false".

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]