下载视频-AFHTTPRequestOperation与NSURLSessionDownloadTask

我尝试更新现有的下载模式，因此我已替换了旧代码：

AFHTTPRequestOperation *downloadRequest = [[AFHTTPRequestOperation alloc] initWithRequest:request];
[downloadRequest setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSData *data = [[NSData alloc] initWithData:responseObject];
    [data writeToFile:video2Save.localFilePath atomically:YES];

    video2Save.downloadComplete = YES;
    [YEPersistentModelHelper saveData:_downloadVideos ToDiskWithIdentifier:persistentIdDownloadedVideos];

    NSLog(@"file downloading complete : %@", video2Save.localFilePath);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"file downloading error : %@", [error localizedDescription]);
}];
[downloadRequest start];*/

以下是：

NSURLSessionDownloadTask *downloadTask = [_sessionManager downloadTaskWithRequest:request progress:&progress destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {
    NSURL *documentsDirectoryURL = [[NSFileManager defaultManager] URLForDirectory:NSDocumentDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:NO error:nil];
    return [documentsDirectoryURL URLByAppendingPathComponent:[NSString stringWithFormat:@"%@.mp4",video2Save.videoVersionId]];

} completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {
    NSLog(@"File downloaded to: %@", filePath);
    video2Save.localFilePath  = [[filePath filePathURL] absoluteString];
    video2Save.downloadComplete = YES;
    [YEPersistentModelHelper saveData:_downloadVideos ToDiskWithIdentifier:persistentIdDownloadedVideos];


    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSError *err = nil;
    NSDictionary *att = [fileManager attributesOfItemAtPath:video2Save.localFilePath error:&err];
    NSLog(@"NSDictionary: %@", att);

}];
[downloadTask resume];

而且似乎效果不错。执行完整的块&文件存在于跟踪的目标上

问题是，我不能再播放视频了！我使用MPMoviePlayerController，它会抛出以下有用的错误：

_itemFailedToPlayToEnd: { kind = 1; new = 2; old = 0; }

唯一的区别似乎是文件权限。第一个添加了一个“员工”组&每个人都可以阅读，而第二个只允许“我”访问。但即使我在finder中更改它，我也无法播放它

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有人有主意吗

要保存位置文件，请使用路径无绝对字符串

video2Save.localFilePath=[[filePath filePathURL]绝对字符串]

不要打电话给absoluteString，即使是为了玩。。就用这条路吧 像这样的例子来调用视频

  NSURL *FilePathURL = [NSURL fileURLWithPath:[docDir stringByAppendingPathComponent:fileToCheck]];
  [[myvideoCalss :[FilePathURL path]]

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嘿，我想这可能触发了这个有用的错误；）