Wrapper

https://docs.google.com/file/d/0B-swXJjVKED1amM4OU10M2x5Nmc/edit?usp=sharing

https://docs.google.com/file/d/0B-swXJjVKED1eXBIWmpzWlFQeVU/edit?usp=sharing

HttpWrapper.h

@class ASIFormDataRequest,HttpWrapper;

@protocol HttpWrapperDelegate

- (void) HttpWrapper:(HttpWrapper *)wrapper fetchDataSuccess:(NSString *)response;

- (void) HttpWrapper:(HttpWrapper *)wrapper fetchDataFail:(NSError *)error;

@optional

- (void) fetchDataSuccess:(NSString *)response;

- (void) fetchDataFail:(NSError *)error;

@optional

- (void) fetchImageSuccess:(NSString *)response;

- (void) fetchImageFail:(NSError *)error;

@end

@interface HttpWrapper : NSObject {

    

    ASIFormDataRequest *requestMain;

    

    NSObject<HttpWrapperDelegate> *delegate;

    //BOOL isImage;

}

@property (nonatomic, assign) ASIFormDataRequest *requestMain;

@property (nonatomic, assign) NSObject<HttpWrapperDelegate> *delegate;

-(void) requestWithMethod:(NSString*)method url:(NSString*)strUrl param:(NSMutableDictionary*)dictParam;

-(void)setVideoData:(NSString*)method url:(NSString*)strUrl param:(NSMutableDictionary*)dictParam;

-(void) requestWithImageUrl:(NSString*)strUrl toFolder:(NSString*)folderName;

-(void) cancelRequest;

@end

HttpWrapper.m

#import "HttpWrapper.h"

#import "ASIFormDataRequest.h"

#import "AppDelegate.h"

#import "NSObject+SBJSON.h"

#import "SBJSON.h"

@implementation HttpWrapper

AppDelegate *appDelegate;

@synthesize delegate, fetchSuccess, fetchFail;

-(id)initWithDelegate:(id)del {

    self = [super init];

    if(self) {

        delegate = del;

        appDelegate = [AppDelegate sharedDelegate];

    }

    return self;

}

-(void) requestWithMethod:(NSString*)method url:(NSString*)strUrl param:(NSMutableDictionary*)dictParam selSuc:(SEL)forSuc selFail:(SEL)forFail

{

    fetchSuccess = forSuc;

    

    fetchFail = forFail;

    

    NSLog(@"HttpWrapper method:%@ >> %@ ", method, strUrl);

    NSLog(@"%@",dictParam);

    

    NSURL *url = [NSURL URLWithString:strUrl];

    ASIFormDataRequest *requestMain = [ASIFormDataRequest requestWithURL:url];

    

    [requestMain setRequestMethod:method];

    

    if(dictParam != nil) {

        NSArray *allKey = [dictParam allKeys];

        for(int i=0; i<[allKey count]; i++) {

            NSString *key = [allKey objectAtIndex:i];            

            

            if([key isEqualToString:@"file"]) {

                NSMutableDictionary *dict = [dictParam valueForKey:key];

                NSString *filepath = [dict valueForKey:@"filepath"];

                NSString *filekey = [dict valueForKey:@"filekey"];

                [requestMain setFile:filepath forKey:filekey];

            } else {

                

                NSString *value = [dictParam valueForKey:key];

                [requestMain setPostValue:value forKey:key];

            }

        }

    }

    [requestMain setDelegate:self];

    [requestMain startAsynchronous];

}

- (void)requestFinished:(ASIHTTPRequest *)request {

    

    NSString *responseString = [request responseString];

    NSLog(@"HttpWrapper > requestFinished > %@",responseString);

    SBJSON *parser = [[[SBJSON alloc] init] autorelease];

    NSDictionary *dic = (NSDictionary *)[parser objectWithString:responseString error:nil];

    

    if([delegate respondsToSelector:fetchSuccess])

        [delegate performSelector:fetchSuccess withObject:dic];

   

    if ([[dic valueForKey:@"success"]intValue] == 0) {

        if ([dic valueForKey:@"msg"] != (id)[NSNull null]) {

            [appDelegate showAlert:@"Alert" message:[dic valueForKey:@"msg"]];

        }

    }

    request = nil;

}

- (void)requestFailed:(ASIHTTPRequest *)request {

    NSError *error = [request error];

    NSLog(@"HttpWrapper > requestFailed > error: %@",error);

    

    request = nil;

    [appDelegate showAlert:@"Warning" message:@"Some Technical or Internet problem accure"];

    if([delegate respondsToSelector:fetchFail])

        [delegate performSelector:fetchFail withObject:error];

}

-(void) requestWithImageUrl:(NSString*)strUrl {

    NSURL *url = [NSURL URLWithString:strUrl];

    

    NSString *filePath = [appDelegate applicationCacheDirectory] ;

    filePath = [filePath stringByAppendingPathComponent:[url lastPathComponent]];

    

    NSFileManager *fileManager = [NSFileManager defaultManager];

    if ([fileManager fileExistsAtPath:filePath] == YES) {

        if([delegate respondsToSelector:@selector(fetchImageSuccess:)])

            [delegate performSelector:@selector(fetchImageSuccess:) withObject:filePath];

        

        return;

    }

    

    ASIFormDataRequest *requestMain = [ASIHTTPRequest requestWithURL:url];

    [requestMain setDidFinishSelector:@selector(requestFinishedImage:)];

    [requestMain setDidFailSelector:@selector(requestFinishedImage:)];

    [requestMain setDownloadDestinationPath:filePath];

    [requestMain setShouldContinueWhenAppEntersBackground:YES];

    [requestMain setDelegate:self];

    [requestMain startAsynchronous];

}

-(void) requestWithImageUrl:(NSString*)strUrl toFolder:(NSString*)folderName venueName:(NSString*)vn{

    

    NSURL *url = [NSURL URLWithString:strUrl];

    

    NSString *filePath = [[appDelegate applicationCacheDirectory] stringByAppendingPathComponent:folderName];

    

    filePath = [filePath stringByAppendingPathComponent:[vn stringByAppendingString:@".png"]];

    

    NSFileManager *fileManager = [NSFileManager defaultManager];

    if ([fileManager fileExistsAtPath:filePath] == YES) {

        if([delegate respondsToSelector:@selector(fetchImageSuccess:)])

            [delegate performSelector:@selector(fetchImageSuccess:) withObject:filePath];

        

        return;

    }

    

    ASIFormDataRequest *requestMain = [ASIHTTPRequest requestWithURL:url];

    [requestMain setDidFinishSelector:@selector(requestFinishedImage:)];

    [requestMain setDidFailSelector:@selector(requestFinishedImage:)];

    [requestMain setDownloadDestinationPath:filePath];

    [requestMain setShouldContinueWhenAppEntersBackground:YES];

    [requestMain setDelegate:self];

    [requestMain startAsynchronous];

}

- (void)requestFinishedImage:(ASIHTTPRequest *)request

{

    //NSData *responseData = [request responseData];

    if([delegate respondsToSelector:@selector(fetchImageSuccess:)])

        [delegate performSelector:@selector(fetchImageSuccess:) withObject:[request downloadDestinationPath]];

    

    request = nil;

}

- (void)requestFailedImage:(ASIHTTPRequest *)request

{

    NSError *error = [request error];

    NSLog(@"HttpWrapper > requestFailedImage > error: %@",error);

    

    request = nil;

    

    

    if([delegate respondsToSelector:@selector(fetchImageFail:)])

        [delegate performSelector:@selector(fetchImageFail:) withObject:error];

    

}

@end

Calling HttpWrapper method for Parsing :-

    if ([txtcommentText.text isEqualToString:@""]) {

        [appDelegate showAlertWithTitle:@"Alert" message:@"CommentBox is Empty Please Write the comment"];

    }

    else

    {

        if(sendCommentRequest)

        {

            [sendCommentRequest cancelRequest];

            [sendCommentRequest release];

            sendCommentRequest = nil;

        }

        

        [appDelegate showLoadingView];

        sendCommentRequest = [[HttpWrapper alloc] init];

        sendCommentRequest.delegate=self;

        

        NSString *strUrl =[NSString stringWithFormat:@"%@?action=addPostComment",serverURl];

        NSString *strPostId =[objUserImage valueForKey:@"postid"];

        

        NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

        NSString *strUsername=[defaults objectForKey:@"username"];

        

        NSMutableDictionary *dictcomment = [NSMutableDictionary dictionary];

        [dictcomment setObject:strUsername forKey:@"username"];

        [dictcomment setObject:strPostId forKey:@"postid"];

        [dictcomment setObject:txtcommentText.text forKey:@"comment"];

        

        [sendCommentRequest requestWithMethod:@"POST" url:strUrl param:dictcomment];

        [UIView transitionWithView:commentView duration:1.0 options:UIViewAnimationOptionTransitionFlipFromRight animations:^{commentView.hidden=NO;} completion:nil];

        [commentView setHidden:YES];

    }

Httpwrapper delegate methods :-

(void)fetchDataFail:(NSError *)error

{

    [appDelegate hideLoadingView];

}

-(void)fetchDataSuccess:(NSString *)response{

    

    SBJSON *parser = [[SBJSON alloc] init];

    [parser retain];

    jsonDic=[parser objectWithString:response error:nil];

    [jsonDic retain];

    

    NSString *strStutas = [jsonDic objectForKey:@"message"];

    

    txtFirstName.hidden = TRUE;

    txtLastName.hidden = TRUE;

    txtCity.hidden = TRUE;

    btnProfileUpdate.hidden =TRUE;

    txtState.hidden = TRUE;

    txtFullName.hidden = FALSE;

    txtFullAdd.hidden = FALSE;

    

    if([strStutas isEqualToString:@"Success"])

    {

        // Delete all Previous Images ...

        [db deleteAllPrevProfileInfo];

        

        if (loadMore == FALSE) {

          

            [db deleteAllPrevProfilePostsInfo];

        }

        else

        {

            [db deleteAllPrevProfilePostsInfoWithMore];

        }

        

        if(result)

        {

            [result release];

            result = nil;

        }

        

        NSMutableDictionary *dicsUserData=[jsonDic objectForKey:@"result"];

        [dicsUserData retain];

                

       NSArray *dataresult =[dicsUserData objectForKey:@"posts"];

        

              

        if (dataresult) {

        for (NSMutableDictionary *objDic in dataresult) {

        

            ProfilePosts *obj = (ProfilePosts *)[NSEntityDescription insertNewObjectForEntityForName:@"ProfilePosts"

                                                                inManagedObjectContext:appDelegate.managedObjectContext];

            float expWidth = 320, expHeight, orgWidth, orgHeight;

            

            orgWidth = [[[objDic objectForKey:@"image_data"] objectForKey:@"width"] floatValue];

            orgHeight = [[[objDic objectForKey:@"image_data"] objectForKey:@"height"] floatValue];

            

            expHeight = (orgHeight * expWidth)/orgWidth;

            

            obj.postid = [objDic objectForKey:@"postid"];

            obj.imagetitle = [objDic objectForKey:@"imagetitle"];

            obj.imageurl = [objDic objectForKey:@"imageurl"];

            obj.imagedesc = [objDic objectForKey:@"imagedesc"];

            obj.is_portrait = [objDic objectForKey:@"is_portrait"];

            obj.username = [objDic objectForKey:@"username"];

            obj.datetime = [objDic objectForKey:@"datetime"];

            obj.photo = [dicsUserData objectForKey:@"photo"];

            obj.commentcount =[objDic objectForKey:@"comment_count"];

            obj.likecount =[objDic objectForKey:@"likecount"];

            obj.userlikecount =[NSNumber numberWithBool:[[objDic objectForKey:@"currentUserLike"] boolValue]];

            

            obj.img_height = [NSNumber numberWithFloat:expHeight];

            obj.img_width = [NSNumber numberWithFloat:expWidth];

            

            [appDelegate saveAction];

            }

        }

       

         ////// Full name

        NSString *fname = [dicsUserData objectForKey:@"FirstName"];

        fname = [fname stringByAppendingString:@" "];

        NSString *fullname = [fname stringByAppendingString:[dicsUserData objectForKey:@"LastName"]];

        

        //// City, State

        NSString *strConcate;

        if ([[dicsUserData objectForKey:@"State"] isEqualToString:@""]) {

            strConcate = [NSString stringWithFormat:@" "];

        }

        else{

            strConcate = [NSString stringWithFormat:@", "];

        }

        //// City, State

        NSString *city = [[dicsUserData objectForKey:@"City"] stringByAppendingString:strConcate];

        NSString *fullAdd = [city stringByAppendingString:[dicsUserData objectForKey:@"State"]];

        

        txtFullName.text = fullname;

        txtFullAdd.text = fullAdd;

        result = [db getLastImages];

        [result retain];

        [tblView reloadData];

        

        if ([[dicsUserData objectForKey:@"photo"] isEqualToString: @""]) {

            

            ivPhoto.image = [UIImage imageNamed:@"noImage.png"];

        }

        

        if (!result) {

            

            ProfilePosts *arrGetUserProfile = (ProfilePosts *)[result objectAtIndex:0];

            NSURL *imgURL = [NSURL URLWithString:arrGetUserProfile.photo];

            NSString *strImg = [NSString stringWithContentsOfURL:imgURL

                                                        encoding:NSStringEnumerationByParagraphs

                                                           error:errno];

//            ivPhoto.image = [UIImage imageWithData:imgData];

            [asyncImg loadImageFromStringforUserimg:strImg];

        }else{

  

            NSString *imgStr = [NSString stringWithFormat:@"%@", [dicsUserData objectForKey:@"photo"]];

            [asyncImg loadImageFromStringforUserimg:imgStr];

        }

        btnProfileUpdate.hidden=FALSE;

       

    }

    

    [appDelegate hideLoadingView];

    [jsonDic release];

    [parser release];

}

OR another methods way of implementing :-

-(void)HttpWrapper:(HttpWrapper *)wrapper fetchDataFail:(NSError *)error{

    [appDelegate hideLoadingView];

    if(wrapper == likeRequest)

    {

        [appDelegate showAlertWithTitle:@"Like"

                                message:@"Error while sending like"];

    }

    else if(wrapper == commentsRequest)

    {

        [appDelegate showAlertWithTitle:@"Comment"

                                message:@"Error while fetching comments"];

    }

    if(wrapper == sendCommentRequest)

    {

        [appDelegate showAlertWithTitle:@"Comment"

                                message:@"Error while posting comment"];

    }

}

-(void)HttpWrapper:(HttpWrapper *)wrapper fetchDataSuccess:(NSString *)response{

    

    SBJSON *parser = [[SBJSON alloc] init];

    NSLog(@"Response : %@",response);

    

    if(wrapper == likeRequest)

    {

        dictDetail =  [parser objectWithString:response];

        [dictDetail retain];

        NSString *counterlike=[dictDetail objectForKey:@"totalLikes"];

        [lblLike setText:[NSString stringWithFormat:@"%@",counterlike]];

        

        BOOL currentUserLike = [[dictDetail objectForKey:@"currentUserLike"] boolValue];

        if (currentUserLike == TRUE) {

            

            UIImage* imageBtn = [UIImage imageNamed:@"favoritered@2x.png"];

            [btnLike setBackgroundImage:imageBtn forState:UIControlStateNormal];

        }

        else{

            

            UIImage* imageBtn = [UIImage imageNamed:@"favorite.png"];

            [btnLike setBackgroundImage:imageBtn forState:UIControlStateNormal];

        }

        

    }

    else if(wrapper == commentsRequest)

    {

        dictComment =[parser objectWithString:response];

        [dictComment retain];

        

        NSString *counterlike=[dictComment objectForKey:@"totalLikes"];

        [lblLike setText:[NSString stringWithFormat:@"%@",counterlike]];

        

        arrComments = [dictComment objectForKey:@"results"];

        NSString *countstr = [NSString stringWithFormat:@"%d",arrComments.count];

        [lblComment setText:countstr];

        

        BOOL currentUserLike = [[dictComment objectForKey:@"currentUserLike"] boolValue];

        if (currentUserLike == TRUE) {

            

            UIImage* imageBtn = [UIImage imageNamed:@"favoritered@2x.png"];

            [btnLike setBackgroundImage:imageBtn forState:UIControlStateNormal];

        }

        else{

            

            UIImage* imageBtn = [UIImage imageNamed:@"favorite.png"];

            [btnLike setBackgroundImage:imageBtn forState:UIControlStateNormal];

        }

        [tblView reloadData];

    }

    else if(wrapper == sendCommentRequest)

    {

        [self fetchComments];

    }

    [parser release];

    [appDelegate hideLoadingView];

}

Soap webservice call

this is url :- http://www.w3schools.com/webservices/tempconvert.asmx?op=CelsiusToFahrenheit

download TouchXml freamwork

then #import "TouchXML.h"

///////////////////////////////////////////////////////     in your .h file  \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

@interface RootViewController : UIViewController {

          NSString *strBarcodeid;

           NSMutableData *webData;

           NSXMLParser *xmlParser;

           NSString *element;

}

-(IBAction)onParse:(id)sender;

///////////////////////////////////////////////////////     in your .m file  \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

-(IBAction)onClickParse:(id)sender{

    NSString *soapMessage = [NSString stringWithFormat:

                             @"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"

                             "<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">\n"

                             "<soap:Body>\n"

                             "<CelsiusToFahrenheit xmlns=\"http://tempuri.org/\">\n"    //hear action pass check 

                             "<Celsius>100</Celsius>\n"//HERE PARAMETER PASS  

                             "</CelsiusToFahrenheit>\n"   //hear action pass check in link

                             "</soap:Body>\n"

                             "</soap:Envelope>\n"

                             ];

    NSLog(@"%@",soapMessage);

NSURL *url = [NSURL URLWithString:@"http://www.w3schools.com/webservices/tempconvert.asmx"];

NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];

NSString *msgLength = [NSString stringWithFormat:@"%d", [soapMessage length]];

[theRequest addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];

[theRequest addValue: @"http://tempuri.org/CelsiusToFahrenheit" forHTTPHeaderField:@"SOAPAction"];      //hear action pass

[theRequest addValue: msgLength forHTTPHeaderField:@"Content-Length"];

[theRequest setHTTPMethod:@"POST"];

[theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];

NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];

if( theConnection )

{

webData = [[NSMutableData data] retain];

}

else

{

NSLog(@"theConnection is NULL");

}

}

///////////connection delegate method for responce---------

-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {

webData = [[NSMutableData data] retain];

}

-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {

[webData appendData:data];

NSLog(@">>>>>>>>>>>>>>>>>>>>>>>>");

}

-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {

NSLog(@"ERROR with theConenction %@",error);

UIAlertView *connectionAlert = [[UIAlertView alloc] initWithTitle:@"Information !" message:@"Internet / Service Connection Error" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];

[connectionAlert show];

[connectionAlert release];

[connection release];

[webData release];

return;

}

-(void)connectionDidFinishLoading:(NSURLConnection *)connection {

    

NSString *theXML = [[NSString alloc] initWithBytes: [webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding];

    theXML = [theXML stringByReplacingOccurrencesOfString:@"&gt;" withString:@">"];

    theXML = [theXML stringByReplacingOccurrencesOfString:@"&lt;" withString:@"<"];

NSLog(@"Received data :%@",theXML);

/* CXMLDocument *doc = [[[CXMLDocument alloc] initWithData:webData options:0 error:nil] autorelease];

NSArray *nodes1 = [doc nodesForXPath:@"//return" error:nil];

NSLog(@"node counts : %d", [nodes1 count]);

for (CXMLElement *node in nodes1) {

for(int counter = 0; counter < [node childCount]; counter++) {    

if ([[[node childAtIndex:counter] name] isEqualToString:@"username"]) {

NSString *str = [[node childAtIndex:counter] stringValue];

NSLog(@"=====================>>string for username : %@\n", str);

}

}

}*/

[connection release];

    [webData release];

}

Json Parsing Example

Steps

first Add "ASSIHTTP" and "JSON" to your project

add all this framework to your project

in your .h file import and set delegate 

#import "HttpWrapper.h"  //import class then add delegete of this
@interface ViewController : UIViewController<HttpWrapperDelegate>
{
}@end

in your .m file call the webservice

-(void)loadWebseviceData

{

 HttpWrapper *httpWrapper=[[HttpWrapper alloc]initWithDelegate:self]; // create object of class with deleget method
    NSMutableDictionary *dicPass=[[NSMutableDictionary alloc]init]; // create a dictionary for a send parameter
    [dicPass setValue:@"Appointments" forKey:@"action"];   //pass action to webseriver
    [dicPass setValue:appDelegate.userId forKey:@"id"];   // pass parameter
    [httpWrapper requestWithMethod:@"POST" url:WEB_URL param:dicPass selSuc:@selector(fetchDataSuccessForClient:) selFail:@selector(fetchDataFail:)];   // fetch data 

}

// if fetch data sucess then call this

-(void)fetchDataSuccessForClient:(NSMutableDictionary *)response
{

 NSLog(@"%@",response);

}


// if fetch data fail then then call this
-(void)fetchDataFail:(NSError *)error
{

}

HttpWrapper.h

@class ASIFormDataRequest;

@protocol HttpWrapperDelegate

@optional

- (void) fetchDataSuccess:(NSString *)response;

- (void) fetchDataFail:(NSError *)error;

- (void) fetchImageSuccess:(NSString *)response;

- (void) fetchImageFail:(NSError *)error;

@end

@interface HttpWrapper : NSObject {

    

   NSObject<HttpWrapperDelegate> *delegate;

        

    SEL fetchSuccess;

SEL fetchFail;

}

@property SEL fetchSuccess;

@property SEL fetchFail;

@property (nonatomic, assign) NSObject<HttpWrapperDelegate> *delegate;

-(id)initWithDelegate:(id)del;

-(void) requestWithMethod:(NSString*)method url:(NSString*)strUrl param:(NSMutableDictionary*)dictParam selSuc:(SEL)forSuc selFail:(SEL)forFail;

@end

HttpWrapper.m

#import "HttpWrapper.h"

#import "ASIFormDataRequest.h"

#import "NSObject+SBJSON.h"

#import "SBJSON.h"

@implementation HttpWrapper

@synthesize delegate, fetchSuccess, fetchFail;

-(id)initWithDelegate:(id)del {

    self = [super init];

    if(self) {

        delegate = del;

    }

    return self;

}

-(void) requestWithMethod:(NSString*)method url:(NSString*)strUrl param:(NSMutableDictionary*)dictParam selSuc:(SEL)forSuc selFail:(SEL)forFail

{

    fetchSuccess = forSuc;

    

    fetchFail = forFail;

    

    NSLog(@"HttpWrapper method:%@ >> %@ ", method, strUrl);

    NSLog(@"%@",dictParam);

    

    NSURL *url = [NSURL URLWithString:strUrl];

    ASIFormDataRequest *requestMain = [ASIFormDataRequest requestWithURL:url];

    

    [requestMain setRequestMethod:method];

    

    if(dictParam != nil) {

        NSArray *allKey = [dictParam allKeys];

        for(int i=0; i<[allKey count]; i++) {

            NSString *key = [allKey objectAtIndex:i];            

            

            if([key isEqualToString:@"file"]) {

                NSMutableDictionary *dict = [dictParam valueForKey:key];

                NSString *filepath = [dict valueForKey:@"filepath"];

                NSString *filekey = [dict valueForKey:@"filekey"];

                [requestMain setFile:filepath forKey:filekey];

            } else {

                

                NSString *value = [dictParam valueForKey:key];

                [requestMain setPostValue:value forKey:key];

            }

        }

    }

    [requestMain setDelegate:self];

    [requestMain startAsynchronous];

    

}

- (void)requestFinished:(ASIHTTPRequest *)request {

    

    NSString *responseString = [request responseString];

    NSLog(@"HttpWrapper > requestFinished > %@",responseString);

    SBJSON *parser = [[[SBJSON alloc] init] autorelease];

    NSDictionary *dic = (NSDictionary *)[parser objectWithString:responseString error:nil];

    

    if([delegate respondsToSelector:fetchSuccess])

        [delegate performSelector:fetchSuccess withObject:dic];

    

    

    request = nil;

}

- (void)requestFailed:(ASIHTTPRequest *)request {

    NSError *error = [request error];

    NSLog(@"HttpWrapper > requestFailed > error: %@",error);

    

    request = nil;

    

    if([delegate respondsToSelector:fetchFail])

        [delegate performSelector:fetchFail withObject:error];

}

@end

Load imgge from nscatchdirectory And Store image to catchDirecoty

This code to fetch image to catchDirecoty
-(void)fetchImageFromCatch{

    if (imgProfile.image!=nil) {

        NSFileManager *fileManager = [NSFileManager defaultManager];

        NSString *filePath = [self applicationCacheDirectory];

        filePath = [filePath stringByAppendingPathComponent:@"anyImageName.png"];

        if ([fileManager fileExistsAtPath:filePath] == YES) {

           NSMutableDictionary *dictImage=[[NSMutableDictionary alloc]init];

           [dictImage setValue:filePath forKey:@"filepath"];

            [dictImage setValue:@"productImage" forKey:@"filekey"];

            [dic setValue:dictImage forKey:@"productImage"];

        }

    }
}

This code to write image to catchDirecoty

-(void)WriteImageToCatch{
    UIImage *image = [UIImage imageNamed:@"anyImageName.png"];
     NSString *filePath = [self applicationCacheDirectory];



        filePath = [filePath stringByAppendingPathComponent:@"itemImage.png"];


    NSData *data1 = [NSData dataWithData:UIImagePNGRepresentation(image)];
    NSError *writeError = nil;

   [data1 writeToFile:filePath options:NSDataWritingAtomic error:&writeError];

   if (writeError) {
      NSLog(@"Error writing file: %@", writeError);
   }
}

This Functiuon for get path to catchDirecoty

-(NSString *) applicationCacheDirectory {

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);

NSString *basePath = ([paths count] > 0) ? [paths objectAtIndex:0]:nil;

 return basePath;

}

UITableview Demo-Example cell value over writing

Download Demo From Hear..... 

--------------------------------------------------------AppDelegate.h--------------------------------------------------
#import <UIKit/UIKit.h>

@class ViewController;

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow *window;

@property (strong, nonatomic) ViewController *viewController;

@end  

---------------------------------------------------------AppDelegate.m-------------------------------------------------

#import "AppDelegate.h"
#import "ViewController.h"

@implementation AppDelegate

@synthesize window = _window;
@synthesize viewController = _viewController;

- (void)dealloc
{
    [_window release];
    [_viewController release];
    [super dealloc];
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
    // Override point for customization after application launch.
    self.viewController = [[[ViewController alloc] initWithNibName:@"ViewController" bundle:nil] autorelease];
    self.window.rootViewController = self.viewController;
    [self.window makeKeyAndVisible];
    return YES;
}

@end
----------------------------------------------------ViewController.xib----------------------------------------------------

 in xib drag adn drop tableview in view

then give reffernce to it....
reference to delegate....also



----------------------------------------------------ViewController.h----------------------------------------------------

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
{
    IBOutlet UITableView *tbl;
}
@property(nonatomic,retain) IBOutlet UITableView *tbl;
@end


--------------------------------------------------ViewController.m------------------------------------------------------

#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)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return 1;
}

// Return how many rows in the table
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return 10;
}

// Return a cell for the ith row
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    // Use re-usable cells to minimize the memory load
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:nil];
//dequeueReusableCellWithIdentifier:nil is not overload the cell value
    if (!cell)  {
        cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:nil] autorelease];
//reuseIdentifier:nil is not overload the cell value both place must use....
    }
   
    // Set up the cell's text
    cell.textLabel.text = [[UIFont familyNames] objectAtIndex:[indexPath row]];
   // cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;



//the above line show discloser button (arrow button) in all cell
//    cell.hidesAccessoryWhenEditing = NO;
    return cell;
}
@end