JSON Pasing in Signup page using WebServices

First Create New File webServiceParsing Class

webServiceParsing.h

#import <Foundation/Foundation.h>

@interface webServiceParsing : NSObject

-(id) getDataFromURLString :(NSString*)urlString;

@end

webServiceParsing.m

#import "webServiceParsing.h"

@implementation webServiceParsing

-(id) getDataFromURLString :(NSString*)urlString

{

    NSURL *url = [NSURL URLWithString:urlString];

    NSError* error = nil;

    NSData *data = [NSData dataWithContentsOfURL:url options:NSDataReadingUncached error:&error];

    if (error) {

        NSLog(@"%@", [error localizedDescription]);

    } else {

        NSLog(@"Data has loaded successfully.");

    }

    

    if (data == nil)

    {

        [self performSelectorOnMainThread:@selector(serverError) withObject:nil waitUntilDone:YES];

        return nil;

    }

    else

    {

        NSError *err;

        id result=[NSJSONSerialization JSONObjectWithData:data options: NSJSONReadingMutableContainers error: &err];

        

        return result;

    }

}

-(void)serverError

{

    UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"Error !!!" message:@"Server Error" delegate:nilcancelButtonTitle:@"OK" otherButtonTitles:nil];

    [alert show];

}

@end

signupControoler.m

#import "webServiceParsing.h"

-(void)JSONMethod

{

    //txtfirstname,txtlastname,txtEmail,txtusernamename,txtpassword,txtconfirmpass;

    NSString *urlString = [NSString stringWithFormat:@"http://192.168.1.253:81/roto/registration.php?first_name=%@&last_name=%@&email=%@&username=%@&password=%@",txtfirstname.text,txtlastname.text,txtEmail.text,txtusernamename.text,txtconfirmpass.text];

    

    response = [[webServiceParsing alloc] getDataFromURLString:urlString];

    

   

}

-(IBAction)Signupbutton:(id)sender

{

     [self JSON];

   

    if([[response objectForKey:@"successful"] isEqualToString:@"true"]){

        loginview1 =[[LoginViewController alloc]initWithNibName:@"LoginViewController" bundle:nil];

        [[self navigationController] pushViewController:loginview1 animated:YES];

    }

    else{

        UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"Failed" message:[response objectForKey:@"message"] delegate:nilcancelButtonTitle:@"Ok" otherButtonTitles:nil];

        [alert show];

    }

}