How send NSData using POST from a iOS application?

Question

NSData *imageData = UIImagePNGRepresentation(image);

How send imageData using POST?

Answer 1

The following code should help

NSData *imageData = UIImagePNGRepresentation(image);

NSURL *yourURL = ...
NSMutableURLRequest *yourRequest = [NSMutableURLRequest requestWithURL:yourURL 
                                                           cachePolicy:NSURLRequestUseProtocolCachePolicy 
                                                       timeoutInterval:60.0];
//Set request to post
[yourRequest setHTTPMethod:@"POST"];

//Set content type 
[yourRequest setValue:@"image/png" forHTTPHeaderField:@"Content-Type"];

// Set authorization header if required
...

// set data
[yourRequest setHTTPBody:imageData];


// create connection and set delegate if needed
NSURLConnection *yourConnection = [[NSURLConnection alloc] initWithRequest:yourRequest 
                                                                  delegate:self
                                                          startImmediately:YES];

Please note that, it is assumed that you are using ARC.