Get current playing song from Spotify iOS app

Here is a solution in Swift 3:

let player = MPMusicPlayerController.systemMusicPlayer()
if let mediaItem = player.nowPlayingItem {
    let title: String = mediaItem.value(forProperty: MPMediaItemPropertyTitle) as! String
    let albumTitle: String = mediaItem.value(forProperty: MPMediaItemPropertyAlbumTitle) as! String
    let artist: String = mediaItem.value(forProperty: MPMediaItemPropertyArtist) as! String

    print("\(title) on \(albumTitle) by \(artist)")
}

Note that starting from iOS 10, you must set a description string for NSAppleMusicUsageDescription in the Info.plist in order to get access to the user’s music.

mediaItem will be an instance of MPMediaItem if there is something playing. You can access the media item’s attributes using the value(forProperty:) method. This methods takes a property. The properties are defined in the documentation for `MPMediaItem under the heading “General Media Item Property Keys”.