access the web service and send data using iOS Objective C - ios

Question

I have string objects and image stored in nsdata. How can i send it to a server by accessing the url? I have seen examples .but its not working.Can someone tell me
Thanks in Advance!!

Answer 1

You could use AFNetworking to easily send string and image to server using url.
Here is a link of tutorial how to use AFNetworking framework.
AFNetworking Tutorial

Answer 2

AFNetworking is the best way to do that. and there are so much tutorials out there.
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSDictionary *params = #{#"username": _username.text,
#"password": passwordMD5
};
[manager POST:#"http://example.com/ws/test.php" parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"JSON: %#", responseObject); //This is the Response
}else{
//if you didnt get expected output then handle it here
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
//Handle any network errors here. ex: if internet disconnected.
}];

Answer 3

Here is an example how to upload an image with string objects as a dictionary to a server using AFNetworking.
- (void)uploadPhoto {
AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:[NSURL URLWithString:#"http://server.url"]];
NSData *imageData = UIImageJPEGRepresentation(self.avatarView.image, 0.5);
NSDictionary *parameters = #{#"username": self.username, #"password" : self.password};
AFHTTPRequestOperation *op = [manager POST:#"rest.of.url" parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
//do not put image inside parameters dictionary as I did, but append it!
[formData appendPartWithFileData:imageData name:paramNameForImage fileName:#"photo.jpg" mimeType:#"image/jpeg"];
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"Success: %# ***** %#", operation.responseString, responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %# ***** %#", operation.responseString, error);
}];
[op start];
}