ios - 将图像添加到 UICollectionView 中的 AVPlayerViewController

Question

我正在尝试根据 UICollectionView 的 indexPath 将图像添加到 AVPlayerViewController contentOverlayView。

当用户选择特定索引路径处的项目时，我希望应用程序根据 UICollectioView indexPath 播放具有特定背景图像的音频，我正在从 API 接收音频文件和图像，并且正在使用 SDWebImage 库下载来自 URL 的图像。

这是我的 collectionView shouldSelectItemAt indexPath 代码:

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
}

这是我的 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。

Answer 1

您正在使用返回图像本身的完成 block 。所以你只需要在那里设置图像即可。

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
    }

还有你的函数

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)
    })
}