Mise à jour: solution trouvée. Vous pouvez le lire à la fin de l'article.

J'essaie d'exécuter une requête POST vers une API REST distante à l'aide de NSURLSession. L'idée est de faire une demande avec deux paramètres: deviceIdet textContent.

Le problème est que ces paramètres ne sont pas reconnus par le serveur. La partie serveur fonctionne correctement car j'ai envoyé un POST en utilisant POSTMAN pour Google Chrome et cela a parfaitement fonctionné.

Voici le code que j'utilise en ce moment:

NSString *deviceID = [[NSUserDefaults standardUserDefaults] objectForKey:@"deviceID"];
NSString *textContent = @"New note";
NSString *noteDataString = [NSString stringWithFormat:@"deviceId=%@&textContent=%@", deviceID, textContent];

NSURLSessionConfiguration *sessionConfiguration = [NSURLSessionConfiguration defaultSessionConfiguration];
sessionConfiguration.HTTPAdditionalHeaders = @{
                                               @"api-key"       : @"API_KEY",
                                               @"Content-Type"  : @"application/json"
                                               };
NSURLSession *session = [NSURLSession sessionWithConfiguration:sessionConfiguration];
NSURL *url = [NSURL URLWithString:@"http://url_to_manage_post_requests"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
request.HTTPBody = [noteDataString dataUsingEncoding:NSUTF8StringEncoding];
request.HTTPMethod = @"POST";
NSURLSessionDataTask *postDataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
    // The server answers with an error because it doesn't receive the params
}];
[postDataTask resume];

J'ai essayé la même procédure avec un NSURLSessionUploadTask:

// ...
NSURL *url = [NSURL URLWithString:@"http://url_to_manage_post_requests"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
request.HTTPMethod = @"POST";
NSURLSessionUploadTask *uploadTask = [session uploadTaskWithRequest:request fromData:[noteDataString dataUsingEncoding:NSUTF8StringEncoding] completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
    // The server answers with an error because it doesn't receive the params
}];
[uploadTask resume];

Des idées?

Solution

Le problème avec mon approche était que j'envoyais l'en- Content-Typetête incorrect avec toutes mes demandes. La seule modification nécessaire pour que le code fonctionne correctement consiste donc à supprimer l' Content-Type = application/jsonen-tête HTTP. Donc, le bon code serait le suivant:

NSString *deviceID = [[NSUserDefaults standardUserDefaults] objectForKey:@"deviceID"];
NSString *textContent = @"New note";
NSString *noteDataString = [NSString stringWithFormat:@"deviceId=%@&textContent=%@", deviceID, textContent];

NSURLSessionConfiguration *sessionConfiguration = [NSURLSessionConfiguration defaultSessionConfiguration];
sessionConfiguration.HTTPAdditionalHeaders = @{
                                               @"api-key"       : @"API_KEY"
                                               };
NSURLSession *session = [NSURLSession sessionWithConfiguration:sessionConfiguration];
NSURL *url = [NSURL URLWithString:@"http://url_to_manage_post_requests"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
request.HTTPBody = [noteDataString dataUsingEncoding:NSUTF8StringEncoding];
request.HTTPMethod = @"POST";
NSURLSessionDataTask *postDataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
    // The server answers with an error because it doesn't receive the params
}];
[postDataTask resume];

Envoi d'images avec d'autres paramètres

Si vous devez publier des images avec d'autres paramètres en utilisant NSURLSessionici, vous avez un exemple:

NSString *deviceID = [[NSUserDefaults standardUserDefaults] objectForKey:@"deviceID"];
NSString *textContent = @"This is a new note";

// Build the request body
NSString *boundary = @"SportuondoFormBoundary";
NSMutableData *body = [NSMutableData data];
// Body part for "deviceId" parameter. This is a string.
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n", @"deviceId"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"%@\r\n", deviceID] dataUsingEncoding:NSUTF8StringEncoding]];
// Body part for "textContent" parameter. This is a string.
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n", @"textContent"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"%@\r\n", textContent] dataUsingEncoding:NSUTF8StringEncoding]];
// Body part for the attachament. This is an image.
NSData *imageData = UIImageJPEGRepresentation([UIImage imageNamed:@"ranking"], 0.6);
if (imageData) {
    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"image.jpg\"\r\n", @"image"] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[@"Content-Type: image/jpeg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:imageData];
    [body appendData:[[NSString stringWithFormat:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
}
[body appendData:[[NSString stringWithFormat:@"--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];

// Setup the session
NSURLSessionConfiguration *sessionConfiguration = [NSURLSessionConfiguration defaultSessionConfiguration];
sessionConfiguration.HTTPAdditionalHeaders = @{
                                               @"api-key"       : @"55e76dc4bbae25b066cb",
                                               @"Accept"        : @"application/json",
                                               @"Content-Type"  : [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary]
                                               };

// Create the session
// We can use the delegate to track upload progress
NSURLSession *session = [NSURLSession sessionWithConfiguration:sessionConfiguration delegate:self delegateQueue:nil];

// Data uploading task. We could use NSURLSessionUploadTask instead of NSURLSessionDataTask if we needed to support uploads in the background
NSURL *url = [NSURL URLWithString:@"URL_TO_UPLOAD_TO"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
request.HTTPMethod = @"POST";
request.HTTPBody = body;
NSURLSessionDataTask *uploadTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
    // Process the response
}];
[uploadTask resume];

Vous pouvez essayer d'utiliser un NSDictionary pour les params. Ce qui suit enverra les paramètres correctement à un serveur JSON.

NSError *error;

NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration delegate:self delegateQueue:nil];
NSURL *url = [NSURL URLWithString:@"[JSON SERVER"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
                                                       cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                   timeoutInterval:60.0];

[request addValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request addValue:@"application/json" forHTTPHeaderField:@"Accept"];

[request setHTTPMethod:@"POST"];
NSDictionary *mapData = [[NSDictionary alloc] initWithObjectsAndKeys: @"TEST IOS", @"name",
                     @"IOS TYPE", @"typemap",
                     nil];
NSData *postData = [NSJSONSerialization dataWithJSONObject:mapData options:0 error:&error];
[request setHTTPBody:postData];


NSURLSessionDataTask *postDataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {

}];

[postDataTask resume];

J'espère que cela aide (j'essaie de trier un problème d'authenticité CSRF avec ce qui précède - mais cela envoie les paramètres dans le NSDictionary).

Motivation

Parfois, je reçois des erreurs lorsque vous souhaitez transmettre httpBody sérialisé à Datade Dictionary, ce qui est dans la plupart des cas dû au mauvais codage ou à des données malformées en raison d' objets non conformes au NSCoding dans leDictionary .

Solution

En fonction de vos besoins une solution facile serait de créer un Stringlieu de Dictionaryet le convertir en Data. Vous avez les exemples de code ci-dessous écrits Objective-CetSwift 3.0 .

Objectif c

// Create the URLSession on the default configuration
NSURLSessionConfiguration *defaultSessionConfiguration = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *defaultSession = [NSURLSession sessionWithConfiguration:defaultSessionConfiguration];

// Setup the request with URL
NSURL *url = [NSURL URLWithString:@"yourURL"];
NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url];

// Convert POST string parameters to data using UTF8 Encoding
NSString *postParams = @"api_key=APIKEY&[email protected]&password=password";
NSData *postData = [postParams dataUsingEncoding:NSUTF8StringEncoding];

// Convert POST string parameters to data using UTF8 Encoding
[urlRequest setHTTPMethod:@"POST"];
[urlRequest setHTTPBody:postData];

// Create dataTask
NSURLSessionDataTask *dataTask = [defaultSession dataTaskWithRequest:urlRequest completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
    // Handle your response here
}];

// Fire the request
[dataTask resume];

Rapide

// Create the URLSession on the default configuration
let defaultSessionConfiguration = URLSessionConfiguration.default
let defaultSession = URLSession(configuration: defaultSessionConfiguration)

// Setup the request with URL
let url = URL(string: "yourURL")
var urlRequest = URLRequest(url: url!)  // Note: This is a demo, that's why I use implicitly unwrapped optional

// Convert POST string parameters to data using UTF8 Encoding
let postParams = "api_key=APIKEY&[email protected]&password=password"
let postData = postParams.data(using: .utf8)

// Set the httpMethod and assign httpBody
urlRequest.httpMethod = "POST"
urlRequest.httpBody = postData

// Create dataTask
let dataTask = defaultSession.dataTask(with: urlRequest) { (data, response, error) in
    // Handle your response here
}

// Fire the request
dataTask.resume()

Vous pouvez utiliser https://github.com/mxcl/OMGHTTPURLRQ

id config = [NSURLSessionConfiguration backgroundSessionConfigurationWithIdentifier:someID];
id session = [NSURLSession sessionWithConfiguration:config delegate:someObject delegateQueue:[NSOperationQueue new]];

OMGMultipartFormData *multipartFormData = [OMGMultipartFormData new];
[multipartFormData addFile:data1 parameterName:@"file1" filename:@"myimage1.png" contentType:@"image/png"];

NSURLRequest *rq = [OMGHTTPURLRQ POST:url:multipartFormData];

id path = [[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:@"upload.NSData"];
[rq.HTTPBody writeToFile:path atomically:YES];

[[session uploadTaskWithRequest:rq fromFile:[NSURL fileURLWithPath:path]] resume];

La solution Swift 2.0 est là:

 let urlStr = “http://url_to_manage_post_requests” 
 let url = NSURL(string: urlStr) 
 let request: NSMutableURLRequest =
 NSMutableURLRequest(URL: url!) request.HTTPMethod = "POST"
 request.setValue(“application/json” forHTTPHeaderField:”Content-Type”)
 request.timeoutInterval = 60.0 
 //additional headers
 request.setValue(“deviceIDValue”, forHTTPHeaderField:”DeviceId”)

 let bodyStr = “string or data to add to body of request” 
 let bodyData = bodyStr.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: true) 
 request.HTTPBody = bodyData

 let session = NSURLSession.sharedSession()

 let task = session.dataTaskWithRequest(request){
             (data: NSData?, response: NSURLResponse?, error: NSError?) -> Void in

             if let httpResponse = response as? NSHTTPURLResponse {
                print("responseCode \(httpResponse.statusCode)")
             }

            if error != nil {

                 // You can handle error response here
                 print("\(error)")
             }else {
                  //Converting response to collection formate (array or dictionary)
                 do{
                     let jsonResult: AnyObject = (try NSJSONSerialization.JSONObjectWithData(data!, options:
 NSJSONReadingOptions.MutableContainers))

                     //success code
                 }catch{
                     //failure code
                 }
             }
         }

   task.resume()

Si vous utilisez Swift, la bibliothèque Just le fait pour vous. Exemple à partir de son fichier readme:

//  talk to registration end point
Just.post(
    "http://justiceleauge.org/member/register",
    data: ["username": "barryallen", "password":"ReverseF1ashSucks"],
    files: ["profile_photo": .URL(fileURLWithPath:"flash.jpeg", nil)]
) { (r)
    if (r.ok) { /* success! */ }
}

Le code de Teja Kumar Bethina a changé pour Swift 3:

    let urlStr = "http://url_to_manage_post_requests"
    let url = URL(string: urlStr)

    var request: URLRequest = URLRequest(url: url!)

    request.httpMethod = "POST"

    request.setValue("application/json", forHTTPHeaderField:"Content-Type")
    request.timeoutInterval = 60.0

    //additional headers
    request.setValue("deviceIDValue", forHTTPHeaderField:"DeviceId")

    let bodyStr = "string or data to add to body of request"
    let bodyData = bodyStr.data(using: String.Encoding.utf8, allowLossyConversion: true)
    request.httpBody = bodyData

    let task = URLSession.shared.dataTask(with: request) {
        (data: Data?, response: URLResponse?, error: Error?) -> Void in

        if let httpResponse = response as? HTTPURLResponse {
            print("responseCode \(httpResponse.statusCode)")
        }

        if error != nil {

            // You can handle error response here
            print("\(error)")
        } else {
            //Converting response to collection formate (array or dictionary)
            do {
                let jsonResult = (try JSONSerialization.jsonObject(with: data!, options:
                    JSONSerialization.ReadingOptions.mutableContainers))

                //success code
            } catch {
                //failure code
            }
        }
    }

    task.resume()

    use like this.....

    Create file

    #import <Foundation/Foundation.h>`    
    #import "SharedManager.h"
    #import "Constant.h"
    #import "UserDetails.h"

    @interface APISession : NSURLSession<NSURLSessionDelegate>
    @property (nonatomic, retain) NSMutableData *responseData;
    +(void)postRequetsWithParam:(NSMutableDictionary* )objDic withAPIName:(NSString* 
    )strAPIURL completionHandler:(void (^)(id result, BOOL status))completionHandler;
    @end

****************.m*************************
    #import "APISession.h"
    #import <UIKit/UIKit.h>
    @implementation APISession

    +(void)postRequetsWithParam:(NSMutableDictionary *)objDic withAPIName:(NSString 
    *)strAPIURL completionHandler:(void (^)(id, BOOL))completionHandler
    {
    NSURL *url=[NSURL URLWithString:strAPIURL];
    NSMutableURLRequest *request=[[NSMutableURLRequest alloc]initWithURL:url];
    [request setHTTPMethod:@"POST"];
    [request addValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
    NSError *err = nil;

    NSData *data=[NSJSONSerialization dataWithJSONObject:objDic options:NSJSONWritingPrettyPrinted error:&err];
    [request setHTTPBody:data];

    NSString *strJsonFormat = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
    NSLog(@"API URL: %@ \t  Api Request Parameter ::::::::::::::%@",url,strJsonFormat);
    //    NSLog(@"Request data===%@",objDic);
    NSURLSessionConfiguration *defaultConfigObject = [NSURLSessionConfiguration defaultSessionConfiguration];
    NSURLSession *session = [NSURLSession sessionWithConfiguration: defaultConfigObject delegate: nil delegateQueue: [NSOperationQueue mainQueue]];

    //  NSURLSession *session=[NSURLSession sharedSession];

    NSURLSessionTask *task=[session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error)
                            {
                                if (error==nil) {
                                    NSDictionary *dicData=[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];\
                                    NSLog(@"Response Data=============%@",dicData);
                                    if([[dicData valueForKey:@"tokenExpired"]integerValue] == 1)
                                    {

                                        NSLog(@"hello");
                                        NSDictionary *dict = [NSDictionary dictionaryWithObject:@"Access Token Expire." forKey:@"message"];
                                        [[NSNotificationCenter defaultCenter] postNotificationName:@"UserLogOut" object:self userInfo:dict];
                                    }
                                    dispatch_async(dispatch_get_main_queue(), ^{
                                        completionHandler(dicData,(error == nil));
                                    });
                                    NSLog(@"%@",dicData);
                                }
                                else{
                                    dispatch_async(dispatch_get_main_queue(), ^{
                                        completionHandler(error.localizedDescription,NO);
                                    });
                                }
                            }];
    //    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
    [task resume];
    //    });
    }
    @end

    *****************************in .your view controller***********
    #import "file"
    txtEmail.text = [txtEmail.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];

    {
            [SVProgressHUD showWithStatus:@"Loading..."];
            [SVProgressHUD setDefaultMaskType:SVProgressHUDMaskTypeGradient];

            NSMutableDictionary *objLoginDic=[[NSMutableDictionary alloc] init];
            [objLoginDic setValue:txtEmail.text forKey:@"email"];
            [objLoginDic setValue:@0            forKey:kDeviceType];
            [objLoginDic setValue:txtPassword.text forKey:kPassword];
            [objLoginDic setValue:@"376545432"  forKey:kDeviceTokan];
            [objLoginDic setValue:@""           forKey:kcountryId];
            [objLoginDic setValue:@""           forKey:kfbAccessToken];
            [objLoginDic setValue:@0            forKey:kloginType];

            [APISession postRequetsWithParam:objLoginDic withAPIName:KLOGIN_URL completionHandler:^(id result, BOOL status) {

                [SVProgressHUD dismiss];

                NSInteger statusResponse=[[result valueForKey:kStatus] integerValue];
                NSString *strMessage=[result valueForKey:KMessage];
                if (status) {
                    if (statusResponse == 1)
                {
                        UserDetails *objLoginUserDetail=[[UserDetails alloc] 
                        initWithObject:[result valueForKey:@"userDetails"]];
                          [[NSUserDefaults standardUserDefaults] 
                        setObject:@(objLoginUserDetail.userId) forKey:@"user_id"];
                        [[NSUserDefaults standardUserDefaults] synchronize];
                        [self clearTextfeilds];
                        HomeScreen *obj=[Kiran_Storyboard instantiateViewControllerWithIdentifier:@"HomeScreen"];
                        [self.navigationController pushViewController:obj animated:YES];
                    }
                    else{
                        [strMessage showAsAlert:self];
                    }
                }
            }];
        }
**********use model class for represnt data*************

    #import <Foundation/Foundation.h>
    #import "Constant.h"
    #import <objc/runtime.h>


    @interface UserDetails : NSObject
    @property(strong,nonatomic) NSString *emailId,
    *deviceToken,
    *countryId,
    *fbAccessToken,
    *accessToken,
    *countryName,
    *isProfileSetup,
    *profilePic,
    *firstName,
    *lastName,
    *password;

    @property (assign) NSInteger userId,deviceType,loginType;

    -(id)initWithObject :(NSDictionary *)dicUserData;
    -(void)saveLoginUserDetail;
    +(UserDetails *)getLoginUserDetail;
    -(UserDetails *)getEmptyModel;
    - (NSArray *)allPropertyNames;
    -(void)printDescription;
       -(NSMutableDictionary *)getDictionary;

    @end

    ******************model.m*************

    #import "UserDetails.h"
    #import "SharedManager.h"

    @implementation UserDetails



      -(id)initWithObject :(NSDictionary *)dicUserData
       {
       self = [[UserDetails alloc] init];
       if (self)
       {
           @try {
               [self setFirstName:([dicUserData valueForKey:@"firstName"] != [NSNull null])? 
               [dicUserData valueForKey:@"firstName"]:@""];


               [self setUserId:([dicUserData valueForKey:kUserId] != [NSNull null])? 
               [[dicUserData valueForKey:kUserId] integerValue]:0];


               }
        @catch (NSException *exception) {
            NSLog(@"Exception: %@",exception.description);
        }
        @finally {
        }
    }
    return self;
}

    -(UserDetails *)getEmptyModel{
    [self setFirstName:@""];
    [self setLastName:@""];



    [self setDeviceType:0];


    return self;
       }

     -  (void)encodeWithCoder:(NSCoder *)encoder {
    //    Encode properties, other class variables, etc
    [encoder encodeObject:_firstName forKey:kFirstName];


    [encoder encodeObject:[NSNumber numberWithInteger:_deviceType] forKey:kDeviceType];

    }

    - (id)initWithCoder:(NSCoder *)decoder {
    if((self = [super init])) {
        _firstName = [decoder decodeObjectForKey:kEmailId];

        _deviceType= [[decoder decodeObjectForKey:kDeviceType] integerValue];

    }
    return self;
    }
    - (NSArray *)allPropertyNames
    {
    unsigned count;
    objc_property_t *properties = class_copyPropertyList([self class], &count);

    NSMutableArray *rv = [NSMutableArray array];

    unsigned i;
    for (i = 0; i < count; i++)
    {
        objc_property_t property = properties[i];
        NSString *name = [NSString stringWithUTF8String:property_getName(property)];
        [rv addObject:name];
    }

    free(properties);

    return rv; 
    } 

    -(void)printDescription{
    NSMutableDictionary *dic = [[NSMutableDictionary alloc] init];

    for(NSString *key in [self allPropertyNames])
    {
        [dic setValue:[self valueForKey:key] forKey:key];
    }
    NSLog(@"\n========================= User Detail ==============================\n");
    NSLog(@"%@",[dic description]);
    NSLog(@"\n=============================================================\n");
    }
    -(NSMutableDictionary *)getDictionary{
    NSMutableDictionary *dic = [[NSMutableDictionary alloc] init];
    for(NSString *key in [self allPropertyNames])
    {
        [dic setValue:[self valueForKey:key] forKey:key];
    }
    return dic;
    }
    #pragma mark
    #pragma mark - Save and get User details
    -(void)saveLoginUserDetail{
    NSData *encodedObject = [NSKeyedArchiver archivedDataWithRootObject:self];
    [Shared_UserDefault setObject:encodedObject forKey:kUserDefault_SavedUserDetail];
    [Shared_UserDefault synchronize];
    }
      +(UserDetails *)getLoginUserDetail{
      NSData *encodedObject = [Shared_UserDefault objectForKey:kUserDefault_SavedUserDetail];
    UserDetails *object = [NSKeyedUnarchiver unarchiveObjectWithData:encodedObject];
    return object;
   }
    @end


     ************************usefull code while add data into model and get data********

                   NSLog(@"Response %@",result);
                  NSString *strMessg = [result objectForKey:kMessage];
                 NSString *status = [NSString stringWithFormat:@"%@",[result 
                objectForKey:kStatus]];

            if([status isEqualToString:@"1"])
            {
                arryBankList =[[NSMutableArray alloc]init];

                NSMutableArray *arrEvents=[result valueForKey:kbankList];
                ShareOBJ.isDefaultBank = [result valueForKey:kisDefaultBank];
                if ([arrEvents count]>0)
                {

                for (NSMutableArray *dic in arrEvents)
                    {
                        BankList *objBankListDetail =[[BankList alloc]initWithObject:[dic 
                         mutableCopy]];
                        [arryBankList addObject:objBankListDetail];
                    }
           //display data using model...
           BankList *objBankListing  =[arryBankList objectAtIndex:indexPath.row];