Class: MPMediaItem

Inherits:
MPMediaEntity show all

Overview

A media item represents a single piece of media (such as one song or one video podcast) in the iPod library. A media item has an overall unique identifier, accessed using the MPMediaItemPropertyPersistentID property key, as well as specific identifiers for its metadata. These identifiers persists across application launches.

Class Method Summary (collapse)

Methods inherited from MPMediaEntity

canFilterByProperty:, #enumerateValuesForProperties:, #valueForProperty:

Methods inherited from NSObject

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Constructor Details

This class inherits a constructor from NSObject

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class NSObject

Class Method Details

+ (String) persistentIDPropertyForGroupingType(groupingType)

Obtains the persistent identifier key for a specified grouping type. Use this convenience method to obtain the key for a specific persistent identifier based on a grouping type. You can use that key, in turn, to obtain the value of a specific persistent ID of a media item, such as album title or artist name. Using this method simplifies such tasks as drilling down from an artist, to albums by that artist, to a specific album.For example, the following statement returns the persistent identifier key for the album grouping type:You could then obtain the specific persistent ID that you want by using the valueForProperty:method. Grouping keys are described in Media Item Collection Grouping Keys.

Parameters:

  • groupingType (MPMediaGrouping) —

    The grouping type that you want the persistent identifier key for.

Returns:

+ (String) titlePropertyForGroupingType(groupingType)

Obtains the title key for a specified grouping type. Use this convenience method to obtain the key for the title that corresponds to a specified grouping type. For example, the following statement obtains the title key for the album grouping type:You could then obtain the specific title that you want by using the valueForProperty: method. Grouping keys are described in Media Item Collection Grouping Keys.

Parameters:

  • groupingType (MPMediaGrouping) —

    The grouping type that you want the title key for.

Returns: