Question

I’m downloading pdf documents from the server:

- (void)downloadSingleDocument:(NSURL *)url
{
    [pdfData release];
    pdfData = [[NSMutableData alloc] init];
    NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:url];
    [req addValue:@"Basic **************=" forHTTPHeaderField:@"Authorization"];
    downloadConnection = [[NSURLConnection alloc] initWithRequest:req delegate:self startImmediately:YES];
}

- (void)connection:(NSURLConnection *)conn didReceiveData:(NSData *)data
{
    NSLog(@"Connection did receive data");
    [pdfData appendData:data];
}

On connectionDidFinishLoading I want to save downloaded pdf file to filesystem in Documents directory with the same filename as it was on the server.
What is the best way to do it?

Answer 1

Use this methods if you have large file:

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse*)response
{
  filepath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingPathComponent:save_name];
  [[NSFileManager defaultManager] createFileAtPath:filepath contents:nil attributes:nil];
  file = [[NSFileHandle fileHandleForUpdatingAtPath:filepath] retain];// Here file is object of NSFileHandle and its declare in .h File

  [file seekToEndOfFile];

}



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

 [file seekToEndOfFile];

 [file writeData:data];
}


- (void)connectionDidFinishLoading:(NSURLConnection*)connection 
 {
  [file closeFile];
// After you download your data. you can copy your data from here to filesystem. and remove from here
 }