How to upload image to server from gallery as JSON on iOS - iphone

Question

How can I upload an image to a server from the gallery on iPhone as JSON? I tried the following:
[Loading startLoading:YES];
NSString *urlString = [NSString stringWithFormat:#"http://railsboxtech.com/singing/jsn_song/register_response.php?accesstoken=%#",Access_Token];
//username, password, name, email, country
NSString *parameter = [NSString stringWithFormat:#"username=%#&password=%#&fname=%#&email=%#&lname=%#&btnImage4=%#",userField.text,passField.text,fnameField.text,emailField.text,lnameField.text,btnImage4];
NSConnection *conn = [[NSConnection alloc] initWithDelegate:self];
[conn sendRequest:urlString withParaMeter:parameter withMethod:#"POST" withTag:1];
[conn startAsynchronousRequest];

Answer 1

if you want to upload an image as a string you must convert your image data to Base64, then you can use your above method:-
For converting to a base64 string, refer to this Stack Overflow answer. You can then use your code for uploading.
Another Way
You can directly upload an image like so:
-(void)uploadImage
{
NSData *imageData = UIImagePNGRepresentation(yourImage);
NSString *urlString = [ NSString stringWithFormat:#"http://yourUploadImageURl.php?intid=%#",1];
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:#"POST"];
NSString *boundary = [NSString stringWithString:#"---------------------------14737809831466499882746641449"];
NSString *contentType = [NSString stringWithFormat:#"multipart/form-data; boundary=%#",boundary];
[request addValue:contentType forHTTPHeaderField: #"Content-Type"];
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:#"\r\n--%#\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"userfile\"; filename=\"%#\"\r\n", 1]] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:#"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:imageData]];
[body appendData:[[NSString stringWithFormat:#"\r\n--%#--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:body];
[NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
}