问在使用MediaItem库时添加media3会导致错误

EN

// My MediaLibraryService
// onCreate()
mediaLibrarySession = MediaLibrarySession.Builder(
    this, 
    player, 
    librarySessionCallback // <--
).build()


// NOTE: If you are using MediaSessionService instead of MediaLibraryService,
// use `setCallback(librarySessionCallback)` from the MediaSession.Builder.

class CustomMediaLibrarySessionCallback : MediaLibraryService.MediaLibrarySession.Callback {

    // [...]

    override fun onAddMediaItems(
        mediaSession: MediaSession,
        controller: MediaSession.ControllerInfo,
        mediaItems: MutableList<MediaItem>
    ): ListenableFuture<List<MediaItem>> {
        // NOTE: You can use the id from the mediaItems to look up missing 
        // information (e.g. get URI from a database) and return a Future with 
        // a list of playable MediaItems.

        // If your use case is really simple and the security/privacy reasons 
        // mentioned earlier don't apply to you, you can add the URI to the 
        // MediaItem request metadata in your activity/fragment and use it
        // to rebuild the playable MediaItem.
        val updatedMediaItems = mediaItems.map { mediaItem ->
            mediaItem.buildUpon()
                .setUri(mediaItem.requestMetadata.mediaUri)
                .build()
        }
        return Futures.immediateFuture(updatedMediaItems)
    }
}

// My Activity

val mmd = MediaMetadata.Builder()
    .setTitle("Example")
    .setArtist("Artist name")
    .build()

// Request metadata. New in (1.0.0-beta01)
// This is optional. I'm adding a RequestMetadata to the MediaItem so I 
// can get the mediaUri from my `onAddMediaItems` simple use case (see  
// onAddMediaItems for more info).
// If you are going to get the final URI from a database, you can move your 
// query to your `MediaLibrarySession.Callback#onAddMediaItems` and skip this.
val rmd = RequestMetadata.Builder()
    .setMediaUri("...".toUri())
    .build()

val mediaItem = MediaItem.Builder()
    .setMediaId("123")
    .setMediaMetadata(mmd)
    .setRequestMetadata(rmd)
    .build()

browser.setMediaItem(mediaItem)
browser.prepare()
browser.play()

// My MediaLibraryService
// onCreate()
mediaLibrarySession = MediaLibrarySession.Builder(this, player, librarySessionCallback)
    .setMediaItemFiller(CustomMediaItemFiller()) // <--
    .setSessionActivity(pendingIntent)
    .build()

class CustomMediaItemFiller : MediaSession.MediaItemFiller {
  override fun fillInLocalConfiguration(
    session: MediaSession,
    controller: MediaSession.ControllerInfo,
    mediaItem: MediaItem
  ): MediaItem {
    // Return the media item to be played
    return mediaItem.buildUpon()
        // Use the metadata values to fill our media item
        .setUri(mediaItem.mediaMetadata.mediaUri)
        .build()
  }
}

// My Activity

// Fill some metadata that the MediaItemFiller 
// will use to create the new MediaItem
val mmd = MediaMetadata.Builder()
    .setTitle("Example")
    .setArtist("Artist name")
    .setMediaUri("...".toUri())
    .build()

val mediaItem: MediaItem =
    MediaItem.Builder()
        .setMediaMetadata(mmd)
        .build()

browser.setMediaItem(mediaItem)
browser.prepare()
browser.play()