File existence after AFNetworking download - afnetworking

Question

I'm having some issues with finding my file after downloading it with AFNetworking...
The download itself goes fine, but when I check for the existence of the file afterwards, I can't find it... So I'm hoping someone can help me out...
In my code, I download the file, and in the completion block, I check for the existence (this is only done since I'm having issues finding it, it will be removed afterwards)...
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:#"url to file removed"]];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *path = [[paths objectAtIndex:0] stringByAppendingPathComponent:#"filename removed"];
operation.outputStream = [NSOutputStream outputStreamToFileAtPath:#"filename removed" append:NO];
//Track the progress
[operation setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead)
{
if (totalBytesExpectedToRead > 0)
{
dispatch_async(dispatch_get_main_queue(), ^{
NSString *progress = [NSString stringWithFormat:#"Downloaded %lld of %lld bytes",
totalBytesRead,
totalBytesExpectedToRead];
NSLog(#"%#", progress);
});
}
}];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject)
{
NSLog(#"File downloaded to %#", path);
//Check for existence
NSFileManager *filemgr = [NSFileManager defaultManager];
if([filemgr fileExistsAtPath:path])
{
NSLog(#"File found");
} else
{
NSLog(#"File not found");
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error)
{
NSLog(#"Error: %#", error);
}];
[operation start];
Any ideas where it might be going wrong? As the download itself goes fine, the problem must lie with saving the file / the file system in iOS...

Answer 1

Does the directory you're trying to write to exist? If not you may find [NSOutputStream outputStreamToFileAtPath:#"filename removed" append:NO] is returning nil.
Try creating the directory first:
NSFileManager *fm = [NSFileManager defaultManager];
NSString *folder = [#"filename removed" stringByDeletingLastPathComponent];
if (![fm fileExistsAtPath:folder]) {
[fm createDirectoryAtPath:folder
withIntermediateDirectories:YES
attributes:nil
error:nil];
}
I hope that helps.