How to send Text and Images to server using NSURLConnection in ios - ios

Question

Hi i am very beginner in Ios and in my project i need to send "Username" and "Password" and "UserImage" to server using NSURLConnection and for this i have inserted this three fields(username,password,userimage) in one Dictionary and i am posting this dictionary to server but using my below code details are not sending to server please help me what did i do here wrong
my code:-
#interface SendingImagesToServer ()
{
NSMutableData *body;
}
#end
#implementation SendingImagesToServer
- (void)viewDidLoad {
[super viewDidLoad];
NSData *imageData;
UIImage * image;
NSError *error = nil;
image = [UIImage imageNamed:#"friendship.jpg"];
imageData = UIImageJPEGRepresentation(image, 0.1f);
NSDictionary *mainDict = [NSDictionary dictionaryWithObjectsAndKeys:
#"James" ,#"username",
#"1234",#"Password",
imageData,#"image",
nil];
NSString *jsonString = [mainDict JSONRepresentation];
NSData * webbody = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
body = [webbody mutableCopy];
NSString *urlstr = [NSString stringWithFormat:#"My url here"];
NSURL *url = [NSURL URLWithString:urlstr];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
[request setHTTPMethod:#"POST"];
NSString *boundary = #"----WebKitFormBoundarycC4YiaUFwM44F6rT";
NSString *contentType = [NSString stringWithFormat:#"multipart/form-data; boundary=%#", boundary];
[request setValue:contentType forHTTPHeaderField:#"Content-Type"];
body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:#"\r\n--%#\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"Content-Disposition: form-data; name=\"imagename\"; filename=\"picture.png\"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
if(imageData == nil && error!=nil) {
NSLog(#"nil");
}
else
{
NSLog(#"not nill");
}
[body appendData:[#"Content-Type: image/png\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"\r\n--%#--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:body];
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSLog(#"Successfully sending to server");
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
NSLog(#"error is %#",[error localizedDescription]);
}
#end

Answer 1

You create the request, but don't start it anywhere in your code. Also you don't create the NSURLConnection anywhere (at least not in the posted part).
The easiest way to achieve this would be to simply add this line at the end of your viewDidLoad method :
NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];
You can read more here