前言
正文
一、准备
1.1 默认 App 的文件共享是关闭的，需要在 plist 中设置启用：
Application supports iTunes file sharing 设置为 YES
启用后把设备连接到 iTunes 上，在 iTunes 应用里的文件共享就能看到你的 App 了（如果看不见需要断开重新拔插一下数据线），可以拷贝一些视频进去，便于测试。
1.2 导入库
Photos.framework
AVKit.framework 用于播放视频
二、获取视频列表
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private let VIDEO_EXTENSIONS = [ ".MOV", ".MP4" ] private var fileManager = NSFileManager.defaultManager() func loadVideos() { var paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true) if paths.count > 0 { let documentsDirectory = paths[0] as String let documentUrl = NSURL(fileURLWithPath: documentsDirectory, isDirectory: true) do { documentUrl.path let files = try fileManager.contentsOfDirectoryAtPath(documentsDirectory) for file in files { fetchVideos(documentUrl.URLByAppendingPathComponent(file).path ?? "") } } catch { } self.tableView.reloadData() } } func fetchVideos(path: String) { var isDir: ObjCBool = false if !path.isEmpty && fileManager.fileExistsAtPath(path, isDirectory: &isDir) { if isDir { do { let files = try fileManager.contentsOfDirectoryAtPath(path) for file in files { fetchVideos(file) } } catch { } } else { var file = File(path: path) if file.isValid() && isVideoFileExtension(file.fileExtension.uppercaseString) { do { if let attr: NSDictionary = try fileManager.attributesOfItemAtPath(path) { file.fileSize = attr.fileSize() } } catch { } videos.append(file) } } } } func isVideoFileExtension(ext: String) -> Bool { for videoExtension in VIDEO_EXTENSIONS { if ext == videoExtension { return true } } return false } struct File { var fileExtension = "" var fileName = "" var path = "" var assert: AVURLAsset? var url: NSURL! var fileSize: UInt64 = 0 init(path: String) { self.path = path self.url = NSURL(fileURLWithPath: path) self.fileName = url.lastPathComponent ?? "" self.fileExtension = "." + (url.pathExtension ?? "") } func isValid() -> Bool { return !(fileName.isEmpty || fileExtension.isEmpty) } } |
代码说明：
a）需要注意一些 swift 的用法，例如 fileExistsAtPath 的用法
b）还有 String 的 pathExtension 和 lastPathComponent 都没了，都改到了 NSURL 下面去了，网上很多资料都还是从 NSString 或者 String 取这些属性
c）AVURLAsset 可以取到视频的时长 CMTimeGetSeconds(AVURLAsset(URL: file.url, options: nil).duration)
三、播放视频
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func play(file: File) { let player = AVPlayer(URL: file.url) let playerViewController = AVPlayerViewController() playerViewController.player = player self.presentViewController(playerViewController, animated: true) { playerViewController.player?.play() } } |
四、用 ... 打开
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func openIn(file: File, indexPath: NSIndexPath) { let document = UIDocumentInteractionController(URL: file.url) let rect = self.tableView.rectForRowAtIndexPath(indexPath) document.presentOpenInMenuFromRect(rect, inView: self.tableView, animated: true) } |
五、删除视频
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func delete(file: File, indexPath: NSIndexPath) { do { try fileManager.removeItemAtPath(file.path) videos.removeAtIndex(indexPath.row) tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Automatic) } catch { } } |
六、保存到相册
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func saveToCameraRoll(file: File, indexPath: NSIndexPath) { if UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(file.path) { UISaveVideoAtPathToSavedPhotosAlbum(file.path, self, "image:didFinishSavingWithError:contextInfo:", nil) } else { // save faild } } func image(image: UIImage, didFinishSavingWithError error: NSErrorPointer, contextInfo:UnsafePointer<Void>) { if error == nil { // save success } else { // save faild } } |
代码说明：
注意 UISaveVideoAtPathToSavedPhotosAlbum 的用法，后面 Selector 写得不对就会报错。
以上就是IOS 8 共享文件的实例代码，有需要的朋友可以参考下。
