gistfile1.txt

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)sigininClicked:(id)sender {
    NSInteger success = 0;
    @try {
        
        if([[self.txtUsername text] isEqualToString:@""] || [[self.txtPassword text] isEqualToString:@""] ) {
            
            [self alertStatus:@"Please enter Email and Password" :@"Sign in Failed!" :0];
            
        } else {
             NSString *post =[[NSString alloc] initWithFormat:@"https://www.90degreeams.com/in/TodoLogin.ashx?email=%@&pass=%@",[self.txtUsername text],[self.txtPassword text]];
            NSLog(@"PostData: %@",post);
          
            
            NSURL *url=[NSURL URLWithString: [[NSString alloc] initWithFormat:@"https://www.90degreeams.com/in/TodoLogin.ashx?email=%@&pass=%@",[self.txtUsername text],[self.txtPassword text]]];
            
            
            NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding 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];
            
            //[NSURLRequest setAllowsAnyHTTPSCertificate:YES forHost:[url host]];
            
            NSError *error = [[NSError alloc] init];
            NSHTTPURLResponse *response = nil;
            NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
            
            NSLog(@"Response code: %ld", (long)[response statusCode]);
            
            if ([response statusCode] >= 200 && [response statusCode] < 300)
            {
                NSString *responseData = [[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
                NSLog(@"Response ==> %@", responseData);
                
                NSError *error = nil;
                NSDictionary *jsonData = [NSJSONSerialization
                                          JSONObjectWithData:urlData
                                          options:NSJSONReadingMutableContainers
                                          error:&error];
                
                success = [jsonData[@"success"] integerValue];
                NSLog(@"Success: %ld",(long)success);
                
                if(success == 1)
                {
                    NSLog(@"Login SUCCESS");
                }
                else
                {
                    
                    NSString *error_msg = (NSString *) jsonData[@"error_message"];
                    [self alertStatus:error_msg :@"Sign in Failed!" :0];
                }
                
            }
            else
            {
                //if (error) NSLog(@"Error: %@", error);
                [self alertStatus:@"Connection Failed" :@"Sign in Failed!" :0];
            }
        }
    }
    @catch (NSException * e) {
        NSLog(@"Exception: %@", e);
        [self alertStatus:@"Sign in Failed." :@"Error!" :0];
    }
    if (success) {
        [self performSegueWithIdentifier:@"login_success" sender:self];
    }
}

- (void) alertStatus:(NSString *)msg :(NSString *)title :(int) tag
{
    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:title
                                                        message:msg
                                                       delegate:self
                                              cancelButtonTitle:@"Ok"
                                              otherButtonTitles:nil, nil];
    alertView.tag = tag;
    [alertView show];
}

- (IBAction)backgroundTap:(id)sender {
    [self.view endEditing:YES];
}

-(BOOL) textFieldShouldReturn:(UITextField *)textField {
    [textField resignFirstResponder];
    return YES;
}

@end