如何从 url 将视频保存在目录中？ [复制]答案

【问题标题】：How to save video in directory from url? [duplicate]如何从 url 将视频保存在目录中？ [复制]
【发布时间】：2016-08-22 14:06:10
【问题描述】：

我想将视频从 url 保存到目录并在应用程序的画廊中显示。

下面是我的代码：

import UIKit
import AVFoundation
import AVKit

class SettingsViewController: UIViewController {

    @IBOutlet var urlLabel: UITextField!
    let PlayerController = AVPlayerViewController()
    var Player:AVPlayer?

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

    @IBAction func downloadButton(sender: AnyObject) {

        let urlLabel1 = urlLabel.text
        let videoURL:NSURL? = NSURL(string: urlLabel1!)

        if let url = videoURL {
            self.Player = AVPlayer(URL: url)
            self.PlayerController.player = self.Player
            self.presentViewController(self.PlayerController, animated: true) { self.PlayerController.player?.play()}
            print("work")
        }
        else {
            var refreshAlert = UIAlertController(title: "Error", message: "Please correct your URL", preferredStyle: UIAlertControllerStyle.Alert)
            refreshAlert.addAction(UIAlertAction(title: "Ok", style: .Default, handler: { (action: UIAlertAction!) in
                print("Handle Ok logic here")
            }))
            presentViewController(refreshAlert, animated: true, completion: nil)

            print("not work")
        }
    }
}

有什么办法可以实现吗？

【问题讨论】：

标签： ios swift apple-tv

【解决方案1】：

//Save Video to Home Directory 
func saveVideoFromURL(videoURL: NSURL, name: String) {
    let homeDirectory = NSURL.fileURLWithPath(NSHomeDirectory(), isDirectory: true)
    let fileURL = homeDirectory.URLByAppendingPathComponent(name).URLByAppendingPathComponent("mov")

    let urlData = NSData(contentsOfURL: videoURL)
    urlData?.writeToURL(fileURL, atomically: true)
}

//Extract video from home directory
func getVideoFromDirectoryWithName(name: String) -> NSData {
    let homeDirectory = NSURL.fileURLWithPath(NSHomeDirectory(), isDirectory: true)
    let fileURL = homeDirectory.URLByAppendingPathComponent(name).URLByAppendingPathComponent("mov")

    let fileData = NSData(contentsOfURL: fileURL)!
    return fileData
}

【讨论】：

【解决方案2】：

假设 URL 直接指向视频，您可以简单地创建一个 NSURLSessionDownloadTask 将视频数据下载到文件系统中，并在完成下载后，通过为本地视频创建一个 AVPlayerItem 打开视频。

【讨论】：