How do download a file with AFNetworking 2.0 - ios

Question

I am having a hard time sifting through search results for how to do this and I can't find anything concrete in the documentation. I just want to download a file and store in the Documents directory. The file is of type .plist, but I don't need to parse the plist. Like I said I just need to save it to disk.
Do I use AFHTTPRequestOperationManager for this?
This is what I've been trying in general:
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
//manager.responseSerializer = [AFPropertyListResponseSerializer serializer];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
[manager GET:url parameters:nil
success:^(AFHTTPRequestOperation *operation, id responseObject) {
DLog(#"downloaded plist");
}
failure:^(AFHTTPRequestOperation *operation, NSError *error) {
DLog(#"JSON DataError: %#", error);
}];
If I use AFHTTPResponseSerializer I get this:
Error Domain=AFNetworkingErrorDomain Code=-1011 "Request failed: internal server error (500)"
If I use AFPropertyListResponseSerializer I get this:
Error Domain=AFNetworkingErrorDomain Code=-1016 "Request failed: unacceptable content-type: text/plain"
But I'm not even sure I'm using the correct API.

Answer 1

Please, try this example.
Hope this help!
// Step 1: create NSURL with full path to downloading file
// for example try this: NSString *fileUrl = #"https://pbs.twimg.com/profile_images/2331579964/jrqzn4q29vwy4mors75s_400x400.png";
// And create NSURLRequest object with our URL
NSURL *URL = [NSURL URLWithString:fileUrl];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
// Step 2: save downloading file's name
// For example our fileName string is equal to 'jrqzn4q29vwy4mors75s_400x400.png'
NSString *fileName = [URL lastPathComponent];
// Step 3: create AFHTTPRequestOperation object with our request
AFHTTPRequestOperation *downloadRequest = [[AFHTTPRequestOperation alloc] initWithRequest:request];
// Step 4: set handling for answer from server and errors with request
[downloadRequest setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
// here we must create NSData object with received data...
NSData *data = [[NSData alloc] initWithData:responseObject];
// ... and save this object as file
// Here 'pathToFile' must be path to directory 'Documents' on your device + filename, of course
[data writeToFile:pathToFile atomically:YES];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"file downloading error : %#", [error localizedDescription]);
}];
// Step 5: begin asynchronous download
[downloadRequest start];
Something else: What's the best way to find the user's Documents directory on an iPhone?