How can I create a Login Page in Xcode? - iphone

Question

So I'm working on creating a login page. But I'm not sure what part I'm missing here! Every time I try to login it says the credentials are invalid.... I'm betting I got confused with POST and GET methods.
Any help would be appreciated! Thanks.
My Code is below:
- (IBAction)login:(id)sender {
if ([userName.text isEqualToString:#""] || [password.text isEqualToString:#""]) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Oops!" message:#"Please fill in all the fields!" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil, nil];
[alert show];
return;
}
NSURL *url = [NSURL URLWithString:#"http://WEBSITEHERE/api/users/AuthenticateUser"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
NSDictionary *params = #{#"userName": userName.text, #"password": password.text};
NSError *error;
NSData *data = [NSJSONSerialization dataWithJSONObject:params options:0 error:&error];
NSLog(#"PARAMS = %#", params);
[request setHTTPMethod:#"GET"];
[request setValue:#"text/plain" forHTTPHeaderField:#"Accept"];
[request setValue:#"application/json;charset=utf-8" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:data];
NSURLResponse *response = nil;
NSData *dataURL = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSString *result = [[NSString alloc] initWithData:dataURL encoding:NSUTF8StringEncoding];
NSString *responseString = [[NSString alloc]initWithData:dataURL encoding:NSUTF8StringEncoding];
NSLog(#"RESULT = %#", responseString);
if ([result isEqualToString:#"1"])
{
UIStoryboard *mainStoryboard=[UIStoryboard
storyboardWithName:#"MainStoryboard" bundle:nil];
Home *mainView=[mainStoryboard
instantiateViewControllerWithIdentifier:#"mainView"];
mainView.modalTransitionStyle=UIModalTransitionStyleCoverVertical;
[self presentViewController:mainView animated:YES completion:nil];
}else
{
// invalid information
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Oops!" message:#"You must have entered something wrong! Try again!" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil, nil];
[alert show];
return;
}
}

Answer 1

I'm not sure how your server is setup but this is how I setup a request for authentication in one of my recent apps:
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:[NSString stringWithFormat:#"%#%#", kBaseServerURL, sAuthMethod]]];
[request setHTTPMethod:#"GET"];
[request setValue:_username forHTTPHeaderField:#"j_username"];
[request setValue:_password forHTTPHeaderField:#"j_password"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:#"application/json" forHTTPHeaderField:#"Content-Type"];