从一个单元格转到不同的控制器（详细视图和 avcontroller）

Question

如果有视频，点击单元格时，我只想显示视频（在 avPlayerViewController 中），如果没有视频，它会转到详细视图w

我试过这个：

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {


    let post = postArray[indexPath.item]
    let controller = PostDetailViewController.fromStoryboard(post: post)
    self.navigationController?.pushViewController(controller, animated: true)


    guard let videoURL = URL(string: post.videoLink)  else {
        return
            }

    let avPlayer = AVPlayer(url: videoURL)
    let avController = AVPlayerViewController()
    avController.player = avPlayer

    present(avController, animated: true) {
        avPlayer.play()
    }

}

如果有视频，它会播放视频（来自 Firebase），但它也会打开详细视图。所以我希望单元格只打开视频或只打开详细视图

Answer 1

构造它，如果没有post.videoLink，则推送PostDetailViewController，否则将播放视频：

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {

    guard let videoURL = URL(string: post.videoLink) else {
        //If there is no URL, then this else condition will be called. Otherwise, the code below the guard statement will be called, and the video player will appear.
        let post = postArray[indexPath.item]
        let controller = PostDetailViewController.fromStoryboard(post: post)
        self.navigationController?.pushViewController(controller, animated: true)
        return
    }

    let avPlayer = AVPlayer(url: videoURL)
    let avController = AVPlayerViewController()
    avController.player = avPlayer

    present(avController, animated: true) {
        avPlayer.play()
    }

}