The MLMediaSource class identifies a specific provider of media. Conceptually, a media source respresents a single app, such as iTunes or Aperture. Each media source contains multiple groups of media objects—individual files containing a piece of media such as a photo, song, or movie.


@interface MLMediaSource : NSObject


The structure of the group hierarchy is specific to each media source, but all sources have certain commonalities. For example, every source has a single root media group, which contains all groups and objects within that source. It is the highest-level parent group in the hierarchy and each of its descendant groups contains its own subgroups and their objects. All groups have a reference to their parent within the hierarchy. A group with no descendants contains only its own objects. If a media group does not contain any objects, it is not visible in the hierarchy.

Every media source has a unique media source identifier within a single media library instance. For a list of possible media source identifiers, see Media Source Identifiers.

All MLMediaSource properties are read-only, so this information can be accessed but not altered.


Identifying the Source


A unique identifier for the media source.


A pointer to the media library instance that loaded this media source.

Accessing Source Attributes


A list of attributes describing the media source.

Accessing the Root Media Group


The base media group in the media source that contains all other groups within the source as descendant elements.

Accessing Media

- mediaGroupForIdentifier:

Returns the media group with the specified identifier.

- mediaGroupsForIdentifiers:

Returns the media groups with the specified identifiers.

- mediaObjectForIdentifier:

Returns the media object with the specified identifier.

- mediaObjectsForIdentifiers:

Returns the media objects with the specified identifiers.


Inherits From