Move file from Documents to tmp XCode 8 iOS 10

Question

I'm porting my application from XCode7 and iOS 9.x to XCode8 and iOS10. I'm struggling with the handling of the files. I need to download a file from my backend and after that to move it from `/Documents` to `/tmp`. Here is my code: ``` AFURLSessionManager *manager = ... NSURLSessionDownloadTask *downloadTask = [manager downloadTaskWithRequest:request progress:nil destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) { NSURL *documentsDirectoryPath = [NSURL fileURLWithPath:[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]]; return [documentsDirectoryPath URLByAppendingPathComponent:[response suggestedFilename]]; } completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) { if(error) { ... } else { NSFileManager *fileManager = [NSFileManager defaultManager]; NSError *error; NSString *tmpDirectory = NSTemporaryDirectory(); NSString *tmpPDFPath = [tmpDirectory stringByAppendingPathComponent:[[response suggestedFil…

Accepted Answer

My first workaround is to pass through the NSData:

```
 NSError* errorWrite = nil;
 NSData* data = [NSData dataWithContentsOfURL:filePath];
 BOOL write = [data writeToFile:tmpPDFPath options:NSDataWritingAtomic error:&errorWrite];
```

This code works fine, but I would like to understand why the previous one doesn't.

Move file from Documents to tmp XCode 8 iOS 10

Solution

Problem