iOS Music Library: How to tell if a given Playlist is a folder









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Say I have an iOS music library with this playlist structure:



A Folder
|
---> A Playlist
|
---> Song A


I run the following code:



import MediaPlayer

let playlists = MPMediaQuery.playlists().collections! as! [MPMediaPlaylist]
for playlist in playlists
let firstItemName = playlist.items.first?.title ?? "none"
print("playlist: (playlist.name!), first item: "(firstItemName)"")



and I get this console output:




playlist: A Playlist, first item: "Song A"



playlist: A Folder, first item: "Song A"




I've looked through all of the MediaPlayer framework documentation, and can't find any way to discover the parent/child relationship between the playlist and the folder through the API (or even to tell that a collection contains other collections). I'd like to present A Playlist only after a user has browsed through A Folder, rather than showing them as siblings (or maybe even filter out A Folder altogether.



Also, the folder and the playlist both have the same class at runtime: MPConcreteMediaPlaylist.










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    up vote
    2
    down vote

    favorite












    Say I have an iOS music library with this playlist structure:



    A Folder
    |
    ---> A Playlist
    |
    ---> Song A


    I run the following code:



    import MediaPlayer

    let playlists = MPMediaQuery.playlists().collections! as! [MPMediaPlaylist]
    for playlist in playlists
    let firstItemName = playlist.items.first?.title ?? "none"
    print("playlist: (playlist.name!), first item: "(firstItemName)"")



    and I get this console output:




    playlist: A Playlist, first item: "Song A"



    playlist: A Folder, first item: "Song A"




    I've looked through all of the MediaPlayer framework documentation, and can't find any way to discover the parent/child relationship between the playlist and the folder through the API (or even to tell that a collection contains other collections). I'd like to present A Playlist only after a user has browsed through A Folder, rather than showing them as siblings (or maybe even filter out A Folder altogether.



    Also, the folder and the playlist both have the same class at runtime: MPConcreteMediaPlaylist.










    share|improve this question

























      up vote
      2
      down vote

      favorite









      up vote
      2
      down vote

      favorite











      Say I have an iOS music library with this playlist structure:



      A Folder
      |
      ---> A Playlist
      |
      ---> Song A


      I run the following code:



      import MediaPlayer

      let playlists = MPMediaQuery.playlists().collections! as! [MPMediaPlaylist]
      for playlist in playlists
      let firstItemName = playlist.items.first?.title ?? "none"
      print("playlist: (playlist.name!), first item: "(firstItemName)"")



      and I get this console output:




      playlist: A Playlist, first item: "Song A"



      playlist: A Folder, first item: "Song A"




      I've looked through all of the MediaPlayer framework documentation, and can't find any way to discover the parent/child relationship between the playlist and the folder through the API (or even to tell that a collection contains other collections). I'd like to present A Playlist only after a user has browsed through A Folder, rather than showing them as siblings (or maybe even filter out A Folder altogether.



      Also, the folder and the playlist both have the same class at runtime: MPConcreteMediaPlaylist.










      share|improve this question















      Say I have an iOS music library with this playlist structure:



      A Folder
      |
      ---> A Playlist
      |
      ---> Song A


      I run the following code:



      import MediaPlayer

      let playlists = MPMediaQuery.playlists().collections! as! [MPMediaPlaylist]
      for playlist in playlists
      let firstItemName = playlist.items.first?.title ?? "none"
      print("playlist: (playlist.name!), first item: "(firstItemName)"")



      and I get this console output:




      playlist: A Playlist, first item: "Song A"



      playlist: A Folder, first item: "Song A"




      I've looked through all of the MediaPlayer framework documentation, and can't find any way to discover the parent/child relationship between the playlist and the folder through the API (or even to tell that a collection contains other collections). I'd like to present A Playlist only after a user has browsed through A Folder, rather than showing them as siblings (or maybe even filter out A Folder altogether.



      Also, the folder and the playlist both have the same class at runtime: MPConcreteMediaPlaylist.







      ios swift mpmediaquery mpmediaitemcollection






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      edited Nov 9 at 21:59

























      asked Nov 8 at 21:58









      Dov

      7,935854131




      7,935854131



























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