Data not being saved properly

Vote count:

0

I'm getting data from a url (.m4a file), then I'm trying to save the file so I can change it's metadata. I have the code below and it seems like it should be working. The file that is copied in the end is empty (88 bytes).

_previewData = [NSMutableData dataWithContentsOfURL:[NSURL URLWithString:@"http://ift.tt/1AKYk2g"]];
NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
                NSString *documentDirectory=[paths objectAtIndex:0];
                NSString *path = [documentDirectory stringByAppendingPathComponent:[NSString stringWithFormat: @"file.mp4"]];
                NSFileManager *filemanager;
                filemanager = [NSFileManager defaultManager];
                [_previewData writeToFile:path atomically:YES];
                if ([filemanager fileExistsAtPath:path]) {
                    // Runs
                    NSLog(@"It worked");
                }
                NSLog(@"%@",path);

ANMovie* file = [[ANMovie alloc] initWithFile:path]; // or .mp4
                NSData* jpegCover = UIImageJPEGRepresentation(artworkImage, 1.0);
                _imageView.image = [UIImage imageWithData:jpegCover];
                ANMetadata* metadata = [[ANMetadata alloc] init];
                metadata.albumCover = [[ANMetadataImage alloc] initWithImageData:jpegCover type:ANMetadataImageTypeJPG];
                [file setMovieMetadata:metadata];
                [file close];

                    _previewData = [NSMutableData dataWithContentsOfFile:path];

UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
                NSDictionary *imageItem=@{@"public.mpeg-4-audio":self.previewData};
                NSDictionary *textItem=@{@"public.plain-text":self.linkData};

                pasteboard.items=@[imageItem,textItem];

asked 26 secs ago

iamheretoask

7

Data not being saved properly