在 Swift 中将视频保存在本地（目录）中？答案

【问题标题】：Saving video in locally (directory) in Swift?在 Swift 中将视频保存在本地（目录）中？
【发布时间】：2020-10-16 21:18:15
【问题描述】：

我尝试在本地保存给定的视频，然后我需要这些保存的视频在我的应用中播放视频。我无法处理保存的视频。这是我的保存尝试：

func saveVideoDocumentDirectory(url : URL){
        let fileManager = FileManager.default
        let paths = (NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] as NSString).appendingPathComponent(".MOV")
        do{
            let videoData = try Data(contentsOf: url)
            fileManager.createFile(atPath: paths as String, contents: videoData, attributes: nil)
        }catch{
            //
        }
        
}

这里是get文件试试

func getVideo(){
        let fileManager = FileManager.default
        let videoPAth = (self.getDirectoryPath() as NSString).appendingPathComponent(".MOV")
        if fileManager.fileExists(atPath: videoPAth){
        print(videoPAth)
        

        play(url: URL(string: videoPAth)!)
        }else{
            print("No Video")
        }
}

这是我的播放视频功能：

 func play(url : URL)
        {
        let player = AVPlayer(url: url)
            let playerViewController = AVPlayerViewController()
            playerViewController.player = player
            present(playerViewController, animated: true)
            {
                playerViewController.player!.play()
            }
}

【问题讨论】：

标签： ios swift video saving-data

【解决方案1】：

请尝试使用write，而不是Filemanager.createFile()。

let videoData = try Data(contentsOf: url)
try videoData.write(to: paths, options: .atomic)

另外，我建议先创建一个文件夹（来自 answer）。

extension URL {
    static func createFolder(folderName: String) -> URL? {
        let fileManager = FileManager.default
        // Get document directory for device, this should succeed
        if let documentDirectory = fileManager.urls(for: .documentDirectory,
                                                    in: .userDomainMask).first {
            // Construct a URL with desired folder name
            let folderURL = documentDirectory.appendingPathComponent(folderName)
            // If folder URL does not exist, create it
            if !fileManager.fileExists(atPath: folderURL.path) {
                do {
                    // Attempt to create folder
                    try fileManager.createDirectory(atPath: folderURL.path,
                                                    withIntermediateDirectories: true,
                                                    attributes: nil)
                } catch {
                    // Creation failed. Print error & return nil
                    print(error.localizedDescription)
                    return nil
                }
            }
            // Folder either exists, or was created. Return URL
            return folderURL
        }
        // Will only be called if document directory not found
        return nil
    }
}

然后，你可以这样保存：

guard let folderURL = URL.createFolder(folderName: "StoredVideos") else {
    print("Can't create url")
    return
}

let permanentFileURL = folderURL.appendingPathComponent(nameOfYourFile).appendingPathExtension("MOV")
let videoData = try Data(contentsOf: url)
try videoData.write(to: permanentFileURL, options: .atomic)

这将为您省去NSSearchPathForDirectoriesInDomains 的麻烦。

【讨论】：