Append NSData to a file in Objective C

Question

I'm attempting to download a large file on the iPhone and save it to disk as it is downloaded.

Ideally, in:

-(void)connection:(NSURLConnection*)connection didReceiveData:(NSData*)data {

}

I want to append 'data' to a file on disk.

I've checked out the NSData documentation. There are functions to write to a file, but I can't see anything to append to an existing file.

Does anyone know how I can append this data? Any help much appreciated! Nick.

Answer 1

You can use a combination of -writeData: and -seekToEndOfFile methods from NSFileHandle class for writing NSData to the end of a file.