POST username and password in JSON - iphone

Question

I have a web service I am working with a url such as
//myurl/index.jsp?user_name=bob&user_pwd=new
as you can see the username has been set as "bob" and password "new". The site give this json file when entered,
[{"success":"1"}]
How do you implemented it on xcode, where when a user enters "bob" as username and "new" as password it should lead to the next controller. How do can I achieve that ?
I followed this tutorial though it's not quite the same, how do you do this. Thanks.

Answer 1

Use a navigation controller and set you view controller as the rootViewController. Then after the user has entered the credentials push the new view controller onto the navigation stack.

Answer 2

Get the value of success from json response. If it is equal to 1 then push to next controller else do nothing.

Answer 3

In Following code you can pass data by either GET or POST method … use any one (As You Wish)
-(void) sendRequest
{
//////////////////////////// GET METHOD /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
NSString *strURL=[NSString stringWithFormat:#"http://myurl/index.jsp?user_name=bob&user_pwd=new"];
self.request=[NSURLRequest requestWithURL:[NSURL URLWithString:strURL]];
self.nsCon=[[NSURLConnection alloc] initWithRequest:request delegate:self];
//////////////////////////// POST METHOD /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
NSString *postString = [NSString stringWithFormat:#"&user_name=bob&user_pwd=new"];
NSString *url = [NSString stringWithFormat:#"http://myurl/index.jsp/"];
self.request =[NSMutableURLRequest requestWithURL:[NSURL URLWithString:url]];
[self.request setHTTPMethod:#"POST"];
[self.request setHTTPBody:[postString dataUsingEncoding:NSUTF8StringEncoding]];
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
if(self.nsCon)
{
self.receivedData=[[NSMutableData alloc] init];
}
else
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(#"Error",#"") message:NSLocalizedString(#"Not Connected !!",#"") delegate:nil cancelButtonTitle:NSLocalizedString(#"OK",#"") otherButtonTitles:nil];
[alert show];
[alert release];
}
}
#pragma mark -
#pragma mark - Connection Delegate Methods
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
[self.responseData setLength:0];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[self.responseData appendData:data];
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
[GeneralClass stopHUD];
NSLog(#"Connection failed.");
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(#"Error",#"") message:NSLocalizedString(#"Connection failed!",#"") delegate:nil cancelButtonTitle:NSLocalizedString(#"OK",#"") otherButtonTitles:nil];
[alert show]; alert = nil;
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSString *responseString = [[NSString alloc] initWithData:self.responseData encoding:NSUTF8StringEncoding];
NSMutableDictionary *receivedData = [responseString JSONValue];
if([[receivedData objectForKey:#"success"] isEqualToString:#"1"])
{
MainDetailViewController *mdController = [[MainDetailViewController alloc] init];
[self.navigationController pushViewController:mdController animated:YES];
}
else
{
NSLog(#"%#",receivedData);
}
}

Answer 4

Post login data
NSString *soapMsg = [NSString stringWithFormat:#"&data={\"LoginUser\":[{\"UserName\":\"%#\",\"Password\":\"%#\"}]}",firstname.text, password.text];
NSHTTPURLResponse *response;
NSData *myRequestData = [ NSData dataWithBytes: [ soapMsg UTF8String ] length: [ soapMsg length ] ];
NSString *postLength = [NSString stringWithFormat:#"%d", [myRequestData length]];
NSMutableURLRequest *request = [ [ NSMutableURLRequest alloc ] initWithURL: [ NSURL URLWithString:#"http://myurl/index.jsp"]];
[request setHTTPMethod: #"POST" ];
[request setHTTPBody: myRequestData ];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody: myRequestData];
NSURLConnection *myConnection=[[NSURLConnection alloc] initWithRequest:request delegate:self];
Receive and vaild json data
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
NSString *responseString = [[NSString alloc] initWithData:WebXmlData encoding:NSUTF8StringEncoding];
NSDictionary *results = [responseString JSONValue];
BOOL success = [[results objectForKey:#"success"] boolValue];
if (success) {
ViewController *viewController =[[ViewController alloc]initWithNibName:#"ViewController" bundle:nil];
[self.navigationController pushViewController:viewController animated:YES];
}
}

Answer 5

Not quite the answer you are looking for but this is more a recommendation for what should you use.
I use github link for Network related activities.
They have nice documentation and very easy to use (uses blocks)
NSDictionary *paramsDictionary = [NSDictionary dictionaryWithObjectsAndKeys:#"user",#"client_id",#"password",#"new", nil];
[[YourAFHttpClientExtenstion sharedInstance] postPath:LOGIN_PATH parameters:paramsDictionary success:^(AFHTTPRequestOperation *operation, id responseObject) {
//handle success
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
// handle error.
}];
YourAFHttpClientExtenstion is extending AFHttpClient and adds a convening method of shared instance and implements initWithBaseUr: