ios - 如何使用 swift 获取当前播放音乐的专辑封面？

Question

我正在尝试创建一个 UIImageView，其中包含当前在音乐播放器上播放的歌曲的专辑插图。我找到的所有资源要么在 objective-c(我不知道)中，要么不起作用(也许我没有正确实现它)。

我目前正在尝试使用这段代码来做到这一点:

class ViewController: UIViewController {

@IBOutlet weak var backgroundAlbum: UIImageView!



override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    backgroundAlbum.image = MPMediaItemArtwork()
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

但是我在行中遇到错误

backgroundAlbum.image = MPMediaItemArtwork()

Answer 1

试试这个:

//this method is called after you picked a song from music library
func mediaPicker(mediaPicker: MPMediaPickerController, didPickMediaItems mediaItemCollection: MPMediaItemCollection) {

    dismissViewControllerAnimated(true, completion: nil)

    //get current song
    let currentSong: MPMediaItem = mediaItemCollection.items[0]

    if let artwork: MPMediaItemArtwork = currentSong.valueForProperty(MPMediaItemPropertyArtwork) as? MPMediaItemArtwork{
        albumArt.image = artwork.imageWithSize(CGSize(width: x, height: y))
    }