Within a function how do you initialise an MPMusicPlayerMediaItemQueueDescriptor, as the first step in the prepend method part of Music Kit? I think I need my media query to become a queue descriptor, and believe I need to initialise it, but not sure how to!
Apple documentation for the class (https://developer.apple.com/documentation/mediaplayer/mpmusicplayermediaitemqueuedescriptor) suggests my function should go something like this:
func playPlaylistNext(chosenPlaylist: String?) {
var QueueDescriptor: MPMusicPlayerMediaItemQueueDescriptor
let myMediaQuery = MPMediaQuery.songs()
let predicateFilter = MPMediaPropertyPredicate(value: chosenPlaylist, forProperty: MPMediaPlaylistPropertyName)
myMediaQuery.filterPredicates = NSSet(object: predicateFilter) as? Set<MPMediaPredicate>
init(query: myMediaQuery) {
// What needs to go in here
}
musicPlayerController.prepend(QueueDescriptor)
}
}
