using HTTP Post method how to make login page in iphone - iphone

Question

I'm have created a Login view. Everytime I login it gives me login Success message will be displayed. even if I enter wrong username and password.I am created login page static.The menctioned link is sample web services link. This is the method I'm using right now:Please give me any idea.Thanks in advance.
loginPage.m
-
(IBAction)login:(id)sender
{
NSString *post = [NSString stringWithFormat:#"&Username=%#&Password=%#",#"username",#"password"];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%d",[postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:[NSString stringWithFormat:#"HTTP://URL"]]];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Current-Type"];
[request setHTTPBody:postData];
NSURLConnection *conn = [[NSURLConnection alloc]initWithRequest:request delegate:self];
if (conn)
{
NSLog(#"connection successful");
}
else
{
NSLog(#"Failed");
}
}
-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
return YES;
}
-(void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
}
-(void) connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
[receivedData setLength:0];
// NSURL *theURL=[response URL];
}
-(void) connectionDidFinishLoading:(NSURLConnection *)connection
{
if(receivedData)
{
NSLog(#"success",[receivedData length]);
}
else
{
NSLog(#"Success",[receivedData length]);
}
}

Answer 1

NSString *string= [NSString stringWithFormat:#"your Url.php?&Username=%#&Password=%#",username,password];
NSLog(#"%#",string);
NSURL *url = [NSURL URLWithString:string];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:#"POST"];
NSURLResponse *response;
NSError *err;
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err];
NSLog(#"responseData: %#", responseData);
NSString *str = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
NSLog(#"responseData: %#", str);
NSString *str1 = #"1";
if ([str isEqualToString:str1 ])
{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:#"Successfully" message:#"" delegate:nil cancelButtonTitle:#"Ok" otherButtonTitles:nil, nil];
[alert show];
}
else
{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:#"Try Again" message:#"" delegate:self cancelButtonTitle:#"Try Later" otherButtonTitles:#"Call", nil];
alert.tag = 1;
[alert show];
}
Don't need to use JSON you can do this without JSON in a esay way!!!

Answer 2

- (void) alertStatus:(NSString *)msg :(NSString *)title
{
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:title
message:msg
delegate:self
cancelButtonTitle:#"Ok"
otherButtonTitles:nil, nil];
[alertView show];
}
- (IBAction)loginClicked:(id)sender {
#try {
if([[txtUserName text] isEqualToString:#""] || [[txtPassword text] isEqualToString:#""] ) {
[self alertStatus:#"Пожалуйста заполните все поля!!!" :#"Авторизация не удолась!"];
} else {
NSString *post =[[NSString alloc] initWithFormat:#"login=%#&pass=%#",[txtUserName text],[txtPassword text]];
NSURL *url=[NSURL URLWithString:#"http:xxxxxxxx.xxx/?"];
NSData *postData = [post dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%lu", (unsigned long)[postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:url];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:postData];
NSError *error = [[NSError alloc] init];
NSHTTPURLResponse *response = nil;
NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
if ([response statusCode] >=200 && [response statusCode] <300)
{
NSData *responseData = [[NSData alloc]initWithData:urlData];
NSDictionary *jsonObject = [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingMutableContainers error:nil];
if([jsonObject objectForKey:#"error"])
{
[self alertStatus:#"" :#""];
} else {
[self alertStatus:#"" :#""];
}
} else {
if (error) NSLog(#"Error: %#", error);
[self alertStatus:#"Connection Failed" :#"Login Failed!"];
}
}
}
#catch (NSException * e) {
NSLog(#"Exception: %#", e);
[self alertStatus:#"Login Failed." :#"Login Failed!"];
}
[txtUserName resignFirstResponder];
[txtPassword resignFirstResponder];
}

Answer 3

Try below code.
-(void)webservice_Call
{
NSString *urlString=#"http://api.openweathermap.org/data/2.1/find/city?lat=10.369&lon=122.5896";
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlString]
cachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData
timeoutInterval:10];
[request setHTTPMethod: #"GET"];
NSError *requestError;
NSURLResponse *urlResponse = nil;
NSData *response1 = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&requestError];
NSDictionary *resDictionary = [NSJSONSerialization JSONObjectWithData:response1 options:NSJSONReadingMutableContainers error:Nil];
}

Answer 4

Post Method for iOS 9 Version
NSMutableDictionary *post = [[NSMutableDictionary alloc]init];
   
[post setValue:#“25” forKey:#"user_id"];
NSArray* notifications = [NSArray arrayWithObjects:post, nil];
       
NSError *writeError = nil;
       
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:notifications options:kNilOptions error:&writeError];
       
NSString *postLength = [NSString stringWithFormat:#"%d",[jsonData length]];
       
NSMutableURLRequest *request = [[NSMutableURLRequest alloc]init];
      
[request setURL:[NSURL URLWithString:[NSString stringWithFormat:#"http://your/url]]];
      
[request setHTTPMethod:#"POST"];
      
[request setValue:postLength forHTTPHeaderField:#"Content-Length" ];
      
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
      
[request setValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
      
[request setHTTPBody:jsonData];
      
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration];
 
// Create a data task object to perform the data downloading.
    
NSURLSessionDataTask *task = [session dataTaskWithURL:url completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
 
    data = [[NSData alloc]initWithData:urlData];
    NSMutableDictionary *jsonObject = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
}];
      
[task resume];

Answer 5

-(void)apiCode
{
NSString *string= [NSString stringWithFormat:#"http:url...project_id=1&user_id=58&question=%#&send_enquiry=%#",self.txtTitle.text,self.txtQuestion.text];
NSLog(#"%#",string);
NSURL *url = [NSURL URLWithString:string];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:#"POST"];
NSURLResponse *response;
NSError *err;
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err];
NSLog(#"responseData: %#", responseData);
NSString *str = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
NSLog(#"responseData: %#", str);
NSString *str1 = #"success";
if ([str isEqualToString:str1 ])
{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:#"Successfully" message:#"" delegate:nil cancelButtonTitle:#"Ok" otherButtonTitles:nil, nil];
[alert show];
}
else
{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:#"Try Again" message:#"" delegate:self cancelButtonTitle:#"Try Later" otherButtonTitles:#"Call", nil];
alert.tag = 1;
[alert show];
}
}