How to upload an image to the server from an iPhone application

Many of my friends asked me how to upload an image to a server from an iPhone application.

The following method can be used to upload an image to a server.

This method take a parameter of type UIImage, which is the image to uploaded.


-(void)uploadImage:(UIImage*)imageToUploadK{

NSData *data=UIImageJPEGRepresentation(imageToUploadK, 0);

NSString *urlString=[[NSString alloc]initWithFormat:@"http://riseuplabs.com/applications/iWallpaper/uploadImage.php]


// setting up the request object now

NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:@"POST"];

/*
add some header info now
we always need a boundary when we post a file
also we need to set the content type

You might want to generate a random boundary.. this is just the same
as my output from wireshark on a valid html post
*/

NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"];
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
[request addValue:contentType forHTTPHeaderField: @"Content-Type"];

/*
now lets create the body of the post
*/
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"ipodfile.jpg\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:data]];
[body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];

// setting the body of the post to the reqeust
[request setHTTPBody:body];

NSURLConnection *uploadConnection=[[NSURLConnection alloc] initWithRequest:request delegate:self];

}