将coredata中的视频作为nsdata在avplayer中播放

Question

如何从coredata作为nsdata formate在AVPlayer中播放视频？MPMoviePlayerController已弃用，所以我要使用AVPlayer。我正在搜索关于保存的nsdata位置的URL路径的一些信息，我不清楚。有人解释吗？我怎么玩？

对此我是新手，如果能共享该代码，我将不胜感激。

如果有人共享自定义AVPlayer的好教程，我找不到很好的教程，所以请从github示例项目中学习。

预先感谢：）

Answer 1

您可以尝试这个！

 NSString *filePath = [self documentsPathForFileName:@"video.mp4"];

 BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:filePath];
 if(!fileExists) {
    NSData *videoAsData;   // your data here
    [videoAsData writeToFile:filePath atomically:YES];
 }

 // access video as URL
 NSURL *videoFileURL =  [NSURL fileURLWithPath:filePath];

// create an AVPlayer
AVPlayer *player = [AVPlayer playerWithURL:videoFileURL];

// create a player view controller
AVPlayerViewController *controller = [[AVPlayerViewController alloc]init];
controller.player = player;

[self presentViewController:controller animated:YES completion:^{
    [controller.player play];
}];


- (NSString *)documentsPathForFileName:(NSString *)name
{
  NSArray *paths =     NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
  NSString *documentsPath = [paths objectAtIndex:0];

  return [documentsPath stringByAppendingPathComponent:name];
}

// if you want to remove file after playing video

NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
BOOL success = [fileManager removeItemAtPath:filePath error:&error];

Answer 2

这是有关如何执行此操作的Swift版本

let data = //... your video Data/NSData
let cacheURL = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask).first!.appendingPathComponent("yourvidename.mp4")

do {
    try data.write(to: cacheURL, options: .atomicWrite)
} catch let err {
    print("Failed with error:", err.localizedString)
}

// instantiate the player
let player = AVPlayer(url: cacheURL)
let vcPlayer = AVPlayerViewController()
vcPlayer.player = player
vcPlayer.player?.play()

// present it or add it to whatever view you need
present(vcPlayer, animated: true, completion: nil)

然后根据需要删除viewWillDisappear上的内容