Ios 在UICollectionView中将图像添加到AvPlayServiceController

根据UICollectionView的indexPath，我正在尝试向AvPlayServiceController contentOverlayView添加一个图像

我希望应用程序根据UICollectioView indexPath播放具有特定背景图像的音频。当用户选择特定indexPath的项目时，我从API接收音频文件和图像，并使用SDWebImage库从URL下载图像

以下是我的collectionView应在indexPath代码中选择项：

override func collectionView(_ collectionView: UICollectionView, shouldSelectItemAt indexPath: IndexPath) -> Bool {

    SVProgressHUD.show()
    if let Url =  URL(string: musicData[indexPath.row].musicCellAudioFile) {
        let musicfileURL = Url
        let audioPlayer = AVPlayer(url: musicfileURL)
        let controller = AVPlayerViewController()
        controller.player = audioPlayer
        controller.player = audioPlayer
        present(controller, animated: true) {

            audioPlayer.play()

        }
        controller.contentOverlayView?.addSubview(imageFromUrl(musicImageUrlString: musicData[indexPath.row].musicImage))

         controller.contentOverlayView?.backgroundColor = UIColor(red: 178/255, green: 178/255, blue: 122/255, alpha: 1)



    }else{
        print("NO music file")
        SVProgressHUD.dismiss()
    }


    return true
}

以下是我的imageFromUrl方法：

func imageFromUrl(musicImageUrlString:String) -> UIImageView{

    let image = UIImage()
    let imageView = UIImageView(image: image)
    imageView.sd_setImage(with: URL(string: musicImageUrlString), placeholderImage: UIImage(named: "App-Default"),options:SDWebImageOptions(rawValue: 0), completed: { (image, error, cacheType, imageURL) in
        SVProgressHUD.dismiss()
    })
    return imageView


}

---

非常感谢您的帮助。

您正在使用一个返回图像本身的完成块。所以你只需要在那里设置图像

func imageFromUrl(musicImageUrlString:String) -> UIImageView {

        let image = UIImage()
        let imageView = UIImageView(image: image)
        imageView.sd_setImage(with: URL(string: musicImageUrlString), placeholderImage: UIImage(named: "App-Default"),options:SDWebImageOptions(rawValue: 0), completed: { (image, error, cacheType, imageURL) in
            SVProgressHUD.dismiss()
            imageView.image = image
        })
        return imageView
    }

更新

override func collectionView(_ collectionView: UICollectionView, shouldSelectItemAt indexPath: IndexPath) -> Bool {

        SVProgressHUD.show()

        if let Url =  URL(string: musicData[indexPath.row].musicCellAudioFile) {
            let musicfileURL = Url
            let audioPlayer = AVPlayer(url: musicfileURL)
            let controller = AVPlayerViewController()
            controller.player = audioPlayer
            controller.player = audioPlayer
            imageFromUrl(musicImageUrlString: "your URL") { (imageView) in
                guard let imageView = imageView else { return }
                controller.contentOverlayView?.addSubview(imageView)
                controller.contentOverlayView?.backgroundColor = UIColor(red: 178/255, green: 178/255, blue: 122/255, alpha: 1)
                present(controller, animated: true) {
                    audioPlayer.play()
                }
            }
        }
        else{
            print("NO music file")
            SVProgressHUD.dismiss()
        }

        return true
    }

你的功能呢

typealias closure = (UIImageView?) -> Void

func imageFromUrl(musicImageUrlString:String, completion: @escaping closure) {
    let image = UIImage()
    let imageView = UIImageView(image: image)
    imageView.sd_setImage(with: URL(string: musicImageUrlString), placeholderImage: UIImage(named: "App-Default"),options:SDWebImageOptions(rawValue: 0), completed: { (image, error, cacheType, imageURL) in
        imageView.image = image
        completion(imageView)
    })
}

---

我已经尝试过你的答案，但是AVPlayerServiceController overlay视图上仍然没有图像我以前没有使用过sdwebimage，但是从文档中我可以看到它下载图像并将其设置为异步。在您的情况下，imageView是在sdWebImage设置图像之前返回的。因此，您需要添加一个调度组，以便仅在图像视图下载完毕后返回图像视图，并且可以帮助我创建调度组吗？我认为您最好使用一个完成块。查看我的更新。我已尝试了你的代码，但图像未显示。我为显示帧=（0；0）的图像制作了一个print语句。