PayU Payment gateway integration in IOS.

Kunal Prasad

26 October 2021

Pay U Payment Gateway

Sometimes we require to integrate an application with Payu payment gateway . for this, we require to follow some steps.

1: There are two ways to integrate with Payu .( seamless and non-seamless(inbuilt UI part)).

2: Here I am defining about non-seamless Integration.

3: Go to that Url and download their SDK. https://github.com/payu-intrepos/Documentations/wiki/8.-iOS-SDK-integration

4: Drag Payu folder in your Xcode project.

5: do some changes in the project.

Add libz.tbd libraries to your project (Project->Build Phases->Link Binary With Libraries)
Add -ObjC in Other Linker Flags in Project Build Settings(Project->Build Settings->Other Linker Flags)
To run the app on iOS9, please add the below code in info.plist

<key>NSAppTransportSecurity</key> <dict> <key>NSAllowsArbitraryLoads</key> <true/> </dict>

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<key>NSAppTransportSecurity</key>
   <dict>
   <key>NSAllowsArbitraryLoads</key>
   <true/>
  </dict>

6: In AppDelegate.h add the below property

@property (weak, nonatomic) UIViewController *paymentOptionVC;

7: suppose you want to integrate into some class lets checkout class (example)

8: do some changes in .h file of checkout class

#import <UIKit/UIKit.h>

#import “PUUIBaseVC.h”

@interface checkout: PUUIBaseVC

9: Here I am giving .m file of checkout class .

//
//  checkout.m
//  PayU
//
//  Created by kunal prasad on 09/08/16.
//  Copyright © 2016 Webkul. All rights reserved.
//

#import "checkout.h"
#import "PUUIPaymentOptionVC.h"
#import "PUSAHelperClass.h"
#import "iOSDefaultActivityIndicator.h"

@interface checkout ()
@property (strong, nonatomic) PayUWebServiceResponse *webServiceResponse;
@property (strong, nonatomic) iOSDefaultActivityIndicator *defaultActivityIndicator;
@end
//PayUModelPaymentParams *paymentParam;
@implementation checkout

- (void)viewDidLoad {
    [super viewDidLoad];
    [self.buttonPressed addTarget:self action:@selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside];
    [self addPaymentResponseNotofication];
    self.defaultActivityIndicator = [iOSDefaultActivityIndicator new];
    self.paymentParam = [PayUModelPaymentParams new];
    self.webServiceResponse = [PayUWebServiceResponse new];
    
}

-(void)btnClicked:(id)sender{
    [self dismissKeyboard];
    [self.defaultActivityIndicator startAnimatingActivityIndicatorWithSelfView:self.view];
    self.view.userInteractionEnabled = NO;
    //self.defaultActivityIndicator = [iOSDefaultActivityIndicator new];
    //self.paymentParam = [PayUModelPaymentParams new];
    
    //PayUModelHashes *hashes = [[PayUModelHashes alloc] init];// Set the hashes here
    self.paymentParam.firstName = @"Ram";
    self.paymentParam.key = @"0MQaQP";
    self.paymentParam.transactionID = [PUSAHelperClass getTransactionIDWithLength:15];
    self.paymentParam.amount = @"110.0";
    self.paymentParam.productInfo = @"Nokia";
    self.paymentParam.SURL = @"https://payu.herokuapp.com/success";
    self.paymentParam.FURL = @"https://payu.herokuapp.com/failure";
    self.paymentParam.phoneNumber = @"1111111111";
    self.paymentParam.email = @"email@testsdk1.com";
    self.paymentParam.udf1 = @"u1";
    self.paymentParam.udf2 = @"u2";
    self.paymentParam.udf3 = @"u3";
    self.paymentParam.udf4 = @"u4";
    self.paymentParam.udf5 = @"u5";
    
    self.scrollView = nil;
    
    // Set the environment according to merchant key ENVIRONMENT_PRODUCTION for Production &
    // ENVIRONMENT_MOBILETEST for mobiletest environment:
    self.paymentParam.environment = ENVIRONMENT_PRODUCTION;
    
    // Set this property if you want to give offer:
    self.paymentParam.offerKey = @"test123@6622"; ////bins@8427,srioffer@8428,cc2@8429,gtkffx@7236
    
    // Set this property if you want to get the stored cards:
    self.paymentParam.userCredentials = @"ra:ra";
    [PUSAHelperClass generateHashFromServer:self.paymentParam withCompletionBlock:^(PayUModelHashes *hashes, NSString *errorString) {
        [self callSDKWithHashes:hashes withError:errorString];
    }];

}
-(void)callSDKWithHashes:(PayUModelHashes *) allHashes withError:(NSString *) errorMessage{
    if (errorMessage == nil) {
        self.paymentParam.hashes = allHashes;
    }
    [self callSDKWithOneTap:nil];
    [self.defaultActivityIndicator stopAnimatingActivityIndicator];


    
}
-(void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:true];
}

-(void) callSDKWithOneTap:(NSDictionary *)oneTapDict{
    self.paymentParam.OneTapTokenDictionary = oneTapDict;
    PayUWebServiceResponse *respo = [PayUWebServiceResponse new];
    self.webServiceResponse = [PayUWebServiceResponse new];
    [self.webServiceResponse getPayUPaymentRelatedDetailForMobileSDK:self.paymentParam withCompletionBlock:^(PayUModelPaymentRelatedDetail *paymentRelatedDetails, NSString *errorMessage, id extraParam) {
        
        [self.defaultActivityIndicator stopAnimatingActivityIndicator];
        
        if (!errorMessage) {
            [respo callVASForMobileSDKWithPaymentParam:self.paymentParam];
            UIStoryboard *stryBrd = [UIStoryboard
                                     storyboardWithName:@"PUUIMainStoryBoard" bundle:nil];
            PUUIPaymentOptionVC *paymentOptionVC = [stryBrd instantiateViewControllerWithIdentifier:VC_IDENTIFIER_PAYMENT_OPTION];
            
            paymentOptionVC.paymentParam = self.paymentParam;
            paymentOptionVC.paymentRelatedDetail = paymentRelatedDetails;
            [self.navigationController pushViewController:paymentOptionVC animated:true];
        }
        else{
            NSLog(@" %@",errorMessage);
        }
    }];
    
}
-(void) dealloc{
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}
-(void)addPaymentResponseNotofication{
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(responseReceived:) name:kPUUINotiPaymentResponse object:nil];
}

-(void)responseReceived:(NSNotification *) notification{
        NSLog(@"Response Received message from server");
        [self.navigationController popToRootViewControllerAnimated:NO];
        //    self.textFieldTransactionID.text = [PUSAHelperClass getTransactionIDWithLength:15];
        NSString *strConvertedRespone = [NSString stringWithFormat:@"%@",notification.object];
        NSLog(@"Response Received %@",strConvertedRespone);
    
        NSError *serializationError;
        id JSON = [NSJSONSerialization JSONObjectWithData:[strConvertedRespone dataUsingEncoding:NSUTF8StringEncoding] options:kNilOptions error:&serializationError];
        if (serializationError == nil && notification.object) {
            NSLog(@"%@",JSON);
            //PAYUALERT([JSON objectForKey:@"status"], strConvertedRespone);
            if ([[JSON objectForKey:@"status"] isEqual:@"success"]) {
                NSString *merchant_hash = [JSON objectForKey:@"merchant_hash"];
                if ([[JSON objectForKey:@"card_token"] length] >1 && merchant_hash.length >1 && paymentParam) {
                    NSLog(@"Saving merchant hash---->");
                    [PUSAHelperClass saveOneTapTokenForMerchantKey:paymentParam.key withCardToken:[JSON objectForKey:@"card_token"] withUserCredential:paymentParam.userCredentials andMerchantHash:merchant_hash withCompletionBlock:^(NSString *message, NSString *errorString) {
                        if (errorString == nil) {
                            NSLog(@"Merchant Hash saved succesfully %@",message);
                        }
                        else{
                            NSLog(@"Error while saving merchant hash %@", errorString);
                        }
                    }];
                }
            }
        }
        else{
            PAYUALERT(@"Response", strConvertedRespone);
        }
}



@end

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// checkout.m

// PayU

// Created by kunal prasad on 09/08/16.

#import "checkout.h"

#import "PUUIPaymentOptionVC.h"

#import "PUSAHelperClass.h"

#import "iOSDefaultActivityIndicator.h"

@interface checkout ()

@property (strong, nonatomic) PayUWebServiceResponse *webServiceResponse;

@property (strong, nonatomic) iOSDefaultActivityIndicator *defaultActivityIndicator;

@end

//PayUModelPaymentParams *paymentParam;

@implementation checkout

- (void)viewDidLoad {

[super viewDidLoad];

[self.buttonPressed addTarget:self action:@selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside];

[self addPaymentResponseNotofication];

self.defaultActivityIndicator = [iOSDefaultActivityIndicator new];

self.paymentParam = [PayUModelPaymentParams new];

self.webServiceResponse = [PayUWebServiceResponse new];

}

-(void)btnClicked:(id)sender{

[self dismissKeyboard];

[self.defaultActivityIndicator startAnimatingActivityIndicatorWithSelfView:self.view];

self.view.userInteractionEnabled = NO;

//self.defaultActivityIndicator = [iOSDefaultActivityIndicator new];

//self.paymentParam = [PayUModelPaymentParams new];

//PayUModelHashes *hashes = [[PayUModelHashes alloc] init];// Set the hashes here

self.paymentParam.firstName = @"Ram";

self.paymentParam.key = @"0MQaQP";

self.paymentParam.transactionID = [PUSAHelperClass getTransactionIDWithLength:15];

self.paymentParam.amount = @"110.0";

self.paymentParam.productInfo = @"Nokia";

self.paymentParam.SURL = @"https://payu.herokuapp.com/success";

self.paymentParam.FURL = @"https://payu.herokuapp.com/failure";

self.paymentParam.phoneNumber = @"1111111111";

self.paymentParam.email = @"email@testsdk1.com";

self.paymentParam.udf1 = @"u1";

self.paymentParam.udf2 = @"u2";

self.paymentParam.udf3 = @"u3";

self.paymentParam.udf4 = @"u4";

self.paymentParam.udf5 = @"u5";

self.scrollView = nil;

// Set the environment according to merchant key ENVIRONMENT_PRODUCTION for Production &

// ENVIRONMENT_MOBILETEST for mobiletest environment:

self.paymentParam.environment = ENVIRONMENT_PRODUCTION;

// Set this property if you want to give offer:

self.paymentParam.offerKey = @"test123@6622"; ////bins@8427,srioffer@8428,cc2@8429,gtkffx@7236

// Set this property if you want to get the stored cards:

self.paymentParam.userCredentials = @"ra:ra";

[PUSAHelperClass generateHashFromServer:self.paymentParam withCompletionBlock:^(PayUModelHashes *hashes, NSString *errorString) {

[self callSDKWithHashes:hashes withError:errorString];

}];

}

-(void)callSDKWithHashes:(PayUModelHashes *) allHashes withError:(NSString *) errorMessage{

if (errorMessage == nil) {

self.paymentParam.hashes = allHashes;

}

[self callSDKWithOneTap:nil];

[self.defaultActivityIndicator stopAnimatingActivityIndicator];

}

-(void)viewWillAppear:(BOOL)animated{

[super viewWillAppear:true];

}

-(void) callSDKWithOneTap:(NSDictionary *)oneTapDict{

self.paymentParam.OneTapTokenDictionary = oneTapDict;

PayUWebServiceResponse *respo = [PayUWebServiceResponse new];

self.webServiceResponse = [PayUWebServiceResponse new];

[self.webServiceResponse getPayUPaymentRelatedDetailForMobileSDK:self.paymentParam withCompletionBlock:^(PayUModelPaymentRelatedDetail *paymentRelatedDetails, NSString *errorMessage, id extraParam) {

[self.defaultActivityIndicator stopAnimatingActivityIndicator];

if (!errorMessage) {

[respo callVASForMobileSDKWithPaymentParam:self.paymentParam];

UIStoryboard *stryBrd = [UIStoryboard

storyboardWithName:@"PUUIMainStoryBoard" bundle:nil];

PUUIPaymentOptionVC *paymentOptionVC = [stryBrd instantiateViewControllerWithIdentifier:VC_IDENTIFIER_PAYMENT_OPTION];

paymentOptionVC.paymentParam = self.paymentParam;

paymentOptionVC.paymentRelatedDetail = paymentRelatedDetails;

[self.navigationController pushViewController:paymentOptionVC animated:true];

}

else{

NSLog(@" %@",errorMessage);

}

}];

}

-(void) dealloc{

[[NSNotificationCenter defaultCenter] removeObserver:self];

}

-(void)addPaymentResponseNotofication{

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(responseReceived:) name:kPUUINotiPaymentResponse object:nil];

}

-(void)responseReceived:(NSNotification *) notification{

NSLog(@"Response Received message from server");

[self.navigationController popToRootViewControllerAnimated:NO];

// self.textFieldTransactionID.text = [PUSAHelperClass getTransactionIDWithLength:15];

NSString *strConvertedRespone = [NSString stringWithFormat:@"%@",notification.object];

NSLog(@"Response Received %@",strConvertedRespone);

NSError *serializationError;

id JSON = [NSJSONSerialization JSONObjectWithData:[strConvertedRespone dataUsingEncoding:NSUTF8StringEncoding] options:kNilOptions error:&serializationError];

if (serializationError == nil && notification.object) {

NSLog(@"%@",JSON);

//PAYUALERT([JSON objectForKey:@"status"], strConvertedRespone);

if ([[JSON objectForKey:@"status"] isEqual:@"success"]) {

NSString *merchant_hash = [JSON objectForKey:@"merchant_hash"];

if ([[JSON objectForKey:@"card_token"] length] >1 && merchant_hash.length >1 && paymentParam) {

NSLog(@"Saving merchant hash---->");

[PUSAHelperClass saveOneTapTokenForMerchantKey:paymentParam.key withCardToken:[JSON objectForKey:@"card_token"] withUserCredential:paymentParam.userCredentials andMerchantHash:merchant_hash withCompletionBlock:^(NSString *message, NSString *errorString) {

if (errorString == nil) {

NSLog(@"Merchant Hash saved succesfully %@",message);

}

else{

NSLog(@"Error while saving merchant hash %@", errorString);

}

}];

}

else{

PAYUALERT(@"Response", strConvertedRespone);

}

@end

10: above value is dummy data for testing purpose.

11: Now I am attaching two file for generating Hash Value , here i am using for only dummy checking so if you want to configure for live payment then you have to write your server file for generating HASH VALUE.

live: https://github.com/payu-intrepos/Documentations/wiki/4.-Server-Side

//
//  PUSAHelperClass.m
//  PayUNonSeamlessTestApp

#import "PUSAHelperClass.h"

NSString *const URLGetHash = @"https://payu.herokuapp.com/get_hash";
NSString *const URLGetMerchantHash = @"https://payu.herokuapp.com/get_merchant_hashes";
NSString *const URLStoreMerchantHash = @"https://payu.herokuapp.com/store_merchant_hash";


@implementation PUSAHelperClass

// To get Hashes from server

+(void) generateHashFromServer:(PayUModelPaymentParams *) paymentParam withCompletionBlock:(hashRequestCompletionBlock)completionBlock{
    
    void(^serverResponseForHashGenerationCallback)(PayUModelHashes *hashes, NSString *errorString) = completionBlock;
    
    NSMutableString *postParam = [NSMutableString new];
    
    if (paymentParam.offerKey) {
        [postParam appendFormat:@"offer_key=%@",paymentParam.offerKey];
    }
    if (paymentParam.key) {
        [postParam appendFormat:@"&key=%@",paymentParam.key];
    }
    if (paymentParam.hashes.paymentHash) {
        [postParam appendFormat:@"&hash=%@",paymentParam.hashes.paymentHash];
    }
    if (paymentParam.email) {
        [postParam appendFormat:@"&email=%@",paymentParam.email];
    }
    if (paymentParam.amount) {
        [postParam appendFormat:@"&amount=%@",paymentParam.amount];
    }
    if (paymentParam.firstName) {
        [postParam appendFormat:@"&firstname=%@",paymentParam.firstName];
    }
    if (paymentParam.transactionID) {
        [postParam appendFormat:@"&txnid=%@",paymentParam.transactionID];
    }
    if (paymentParam.userCredentials) {
        [postParam appendFormat:@"&user_credentials=%@",paymentParam.userCredentials];
    }
    if (paymentParam.udf1) {
        [postParam appendFormat:@"&udf1=%@",paymentParam.udf1];
    }
    if (paymentParam.udf2) {
        [postParam appendFormat:@"&udf2=%@",paymentParam.udf2];
    }
    if (paymentParam.udf3) {
        [postParam appendFormat:@"&udf3=%@",paymentParam.udf3];
    }
    if (paymentParam.udf4) {
        [postParam appendFormat:@"&udf4=%@",paymentParam.udf4];
    }
    if (paymentParam.udf5) {
        [postParam appendFormat:@"&udf5=%@",paymentParam.udf5];
    }
    if (paymentParam.productInfo) {
        [postParam appendFormat:@"&productinfo=%@",paymentParam.productInfo];
    }
    
    NSLog(@"-->>Hash generation Post Param = %@",postParam);
    
    [PUSAWSManager getWebServiceResponse:[PUSAWSManager getURLRequestWithPostParam:postParam withURL:[NSURL URLWithString:URLGetHash]] withCompletionBlock:^(id JSON, NSString *errorMessage, id extraParam) {
        if (JSON) {
            if([[JSON objectForKey:@"message"] isEqualToString:@"successfully generated hash"]){
                PayUModelHashes *payUHashes = [PayUModelHashes new];
                payUHashes.paymentHash = [JSON objectForKey:@"payment_hash"];
                payUHashes.paymentRelatedDetailsHash = [JSON objectForKey:@"payment_related_details_for_mobile_sdk_hash"];
                payUHashes.VASForMobileSDKHash = [JSON objectForKey:@"vas_for_mobile_sdk_hash"];
                payUHashes.deleteUserCardHash = [JSON objectForKey:@"delete_user_card_hash"];
                payUHashes.editUserCardHash = [JSON objectForKey:@"edit_user_card_hash"];
                payUHashes.saveUserCardHash = [JSON objectForKey:@"save_user_card_hash"];
                payUHashes.getUserCardHash = [JSON objectForKey:@"get_user_cards_hash"];
                payUHashes.offerHash = [JSON objectForKey:@"check_offer_status_hash"];
                serverResponseForHashGenerationCallback(payUHashes ,nil);
            }
            else{
                serverResponseForHashGenerationCallback(nil,[JSON objectForKey:@"message"]);
            }
            
        }
        else{
            serverResponseForHashGenerationCallback(nil,errorMessage);
        }
    }];
}

// To get transactionID

+(NSString *) getTransactionIDWithLength:(int) len {
    NSString *letters = @"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
    
    NSMutableString *randomString = [NSMutableString stringWithCapacity: len];
    
    for (int i=0; i<len; i++) {
        [randomString appendFormat: @"%C", [letters characterAtIndex: arc4random_uniform((u_int32_t)[letters length])]];
    }
    
    return randomString;
}


@end

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// PUSAHelperClass.m

// PayUNonSeamlessTestApp

#import "PUSAHelperClass.h"

NSString *const URLGetHash = @"https://payu.herokuapp.com/get_hash";

NSString *const URLGetMerchantHash = @"https://payu.herokuapp.com/get_merchant_hashes";

NSString *const URLStoreMerchantHash = @"https://payu.herokuapp.com/store_merchant_hash";

@implementation PUSAHelperClass

// To get Hashes from server

+(void) generateHashFromServer:(PayUModelPaymentParams *) paymentParam withCompletionBlock:(hashRequestCompletionBlock)completionBlock{

void(^serverResponseForHashGenerationCallback)(PayUModelHashes *hashes, NSString *errorString) = completionBlock;

NSMutableString *postParam = [NSMutableString new];

if (paymentParam.offerKey) {

[postParam appendFormat:@"offer_key=%@",paymentParam.offerKey];

}

if (paymentParam.key) {

[postParam appendFormat:@"&key=%@",paymentParam.key];

}

if (paymentParam.hashes.paymentHash) {

[postParam appendFormat:@"&hash=%@",paymentParam.hashes.paymentHash];

}

if (paymentParam.email) {

[postParam appendFormat:@"&email=%@",paymentParam.email];

}

if (paymentParam.amount) {

[postParam appendFormat:@"&amount=%@",paymentParam.amount];

}

if (paymentParam.firstName) {

[postParam appendFormat:@"&firstname=%@",paymentParam.firstName];

}

if (paymentParam.transactionID) {

[postParam appendFormat:@"&txnid=%@",paymentParam.transactionID];

}

if (paymentParam.userCredentials) {

[postParam appendFormat:@"&user_credentials=%@",paymentParam.userCredentials];

}

if (paymentParam.udf1) {

[postParam appendFormat:@"&udf1=%@",paymentParam.udf1];

}

if (paymentParam.udf2) {

[postParam appendFormat:@"&udf2=%@",paymentParam.udf2];

}

if (paymentParam.udf3) {

[postParam appendFormat:@"&udf3=%@",paymentParam.udf3];

}

if (paymentParam.udf4) {

[postParam appendFormat:@"&udf4=%@",paymentParam.udf4];

}

if (paymentParam.udf5) {

[postParam appendFormat:@"&udf5=%@",paymentParam.udf5];

}

if (paymentParam.productInfo) {

[postParam appendFormat:@"&productinfo=%@",paymentParam.productInfo];

}

NSLog(@"-->>Hash generation Post Param = %@",postParam);

[PUSAWSManager getWebServiceResponse:[PUSAWSManager getURLRequestWithPostParam:postParam withURL:[NSURL URLWithString:URLGetHash]] withCompletionBlock:^(id JSON, NSString *errorMessage, id extraParam) {

if (JSON) {

if([[JSON objectForKey:@"message"] isEqualToString:@"successfully generated hash"]){

PayUModelHashes *payUHashes = [PayUModelHashes new];

payUHashes.paymentHash = [JSON objectForKey:@"payment_hash"];

payUHashes.paymentRelatedDetailsHash = [JSON objectForKey:@"payment_related_details_for_mobile_sdk_hash"];

payUHashes.VASForMobileSDKHash = [JSON objectForKey:@"vas_for_mobile_sdk_hash"];

payUHashes.deleteUserCardHash = [JSON objectForKey:@"delete_user_card_hash"];

payUHashes.editUserCardHash = [JSON objectForKey:@"edit_user_card_hash"];

payUHashes.saveUserCardHash = [JSON objectForKey:@"save_user_card_hash"];

payUHashes.getUserCardHash = [JSON objectForKey:@"get_user_cards_hash"];

payUHashes.offerHash = [JSON objectForKey:@"check_offer_status_hash"];

serverResponseForHashGenerationCallback(payUHashes ,nil);

}

else{

serverResponseForHashGenerationCallback(nil,[JSON objectForKey:@"message"]);

}

else{

serverResponseForHashGenerationCallback(nil,errorMessage);

}

}];

}

// To get transactionID

+(NSString *) getTransactionIDWithLength:(int) len {

NSString *letters = @"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";

NSMutableString *randomString = [NSMutableString stringWithCapacity: len];

for (int i=0; i<len; i++) {

[randomString appendFormat: @"%C", [letters characterAtIndex: arc4random_uniform((u_int32_t)[letters length])]];

}

return randomString;

}

@end

//
//  PUSAWSManager.m
//  PayUNonSeamlessTestApp
//
//  Created by Umang Arya on 04/01/16.
//  Copyright © 2016 PayU. All rights reserved.
//

#import "PUSAWSManager.h"

@implementation PUSAWSManager

+(NSMutableURLRequest *)getURLRequestWithPostParam:(NSString *) postParam withURL:(NSURL *) paramURL{
    NSMutableURLRequest *request;
    request = [NSMutableURLRequest requestWithURL:paramURL cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
    [request setValue:@"application/x-www-form-urlencoded; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
    if (postParam) {
        request.HTTPMethod = @"POST";
        [request setHTTPBody:[postParam dataUsingEncoding:NSUTF8StringEncoding]];
    }
    else{
        request.HTTPMethod = @"GET";
    }
    return request;
}

+(void)getWebServiceResponse:(NSMutableURLRequest *) webServiceRequest withCompletionBlock:(completionBlockForWebServiceResponse) completionBlock{
    void(^callBackForWebServiceResponse)(id JSON ,NSString *errorMessage, id extraParam) = completionBlock;
    
    NSURLSession *defaultSession = [NSURLSession sharedSession];
    NSURLSessionDataTask *dataTask = [defaultSession dataTaskWithRequest:webServiceRequest completionHandler:^(NSData * data, NSURLResponse * response, NSError * error) {
        if (error == nil) {
            NSError *parseError = nil;
            id object = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&parseError];
            NSLog(@"Response after hitting webService --> %@",object);
            if (parseError == nil) {
                callBackForWebServiceResponse(object,nil,nil);
            }
            else{
                NSLog(@"Parse Error: %@",parseError.localizedDescription);
                callBackForWebServiceResponse(nil,parseError.localizedDescription,nil);
            }
        }
        else{
            NSLog(@"Parse Error: %@",error.localizedDescription);
            callBackForWebServiceResponse(nil,error.localizedDescription,nil);
        }
    }];
    [dataTask resume];
}


@end

// PUSAWSManager.m

// PayUNonSeamlessTestApp

// Created by Umang Arya on 04/01/16.

#import "PUSAWSManager.h"

@implementation PUSAWSManager

+(NSMutableURLRequest *)getURLRequestWithPostParam:(NSString *) postParam withURL:(NSURL *) paramURL{

NSMutableURLRequest *request;

request = [NSMutableURLRequest requestWithURL:paramURL cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];

[request setValue:@"application/x-www-form-urlencoded; charset=utf-8" forHTTPHeaderField:@"Content-Type"];

if (postParam) {

request.HTTPMethod = @"POST";

[request setHTTPBody:[postParam dataUsingEncoding:NSUTF8StringEncoding]];

}

else{

request.HTTPMethod = @"GET";

}

return request;

}

+(void)getWebServiceResponse:(NSMutableURLRequest *) webServiceRequest withCompletionBlock:(completionBlockForWebServiceResponse) completionBlock{

void(^callBackForWebServiceResponse)(id JSON ,NSString *errorMessage, id extraParam) = completionBlock;

NSURLSession *defaultSession = [NSURLSession sharedSession];

NSURLSessionDataTask *dataTask = [defaultSession dataTaskWithRequest:webServiceRequest completionHandler:^(NSData * data, NSURLResponse * response, NSError * error) {

if (error == nil) {

NSError *parseError = nil;

id object = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&parseError];

NSLog(@"Response after hitting webService --> %@",object);

if (parseError == nil) {

callBackForWebServiceResponse(object,nil,nil);

}

else{

NSLog(@"Parse Error: %@",parseError.localizedDescription);

callBackForWebServiceResponse(nil,parseError.localizedDescription,nil);

}

else{

NSLog(@"Parse Error: %@",error.localizedDescription);

callBackForWebServiceResponse(nil,error.localizedDescription,nil);

}

}];

[dataTask resume];

}

@end

12: Now its works fine and you can set according to your need.