Setting the Property List Type
Set the property list type when creating or editing a property list. If Xcode cannot determine the type of a property list, you may need to set the type manually.
Select a property list in the project navigator.
Control-click in the property list editor to display a contextual menu.
From the Property List Type submenu, choose a new property list type.
Property lists that share the same system-defined structure are said to have the same type. In addition to the
Info.plist file required for every application bundle, the property list editor in Xcode supports a variety of other types. The property list type determines the list of possible keys in the key’s pop-up menu.
In the Property List Type submenu, the current type is indicated by a dash to the left of the type name.