Json Parser

Json parsar

Here json Example using the NXJson parser.. There are Two Method To Do This ..... It Is Given Below : Method ( 1 ) :- -: First Call Method In Viewdidload and Write This Code In Method :- NSHTTPURLResponse *responce = nil;          NSString *urlstring = [NSString stringWithFormat:@"http://phobos.apple.com/WebObjects/MZStoreServices.woa/ws/RSS/toppaidapplications/limit=20/json"];          NSURL *urldata = [NSURL URLWithString:[urlstring stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];          NSURLRequest *urlrequest = [[NSURLRequest alloc]initWithURL:urldata];          NSData *mydata = [NSURLConnection sendSynchronousRequest:urlrequest returningResponse:&responce error:nil];          NSMutableDictionary *maindic = [NSJSONSerialization JSONObjectWithData:mydata options:NSJSONReadingMutableContainers error:nil]; Then Write Coding To Fetch Your Data Depend Your Need .... Example Is Given Below NSMutableDictionary *feeddic = [maindic objectForKey:@"feed"];               NSMutableArray *mainarr = [feeddic objectForKey:@"entry"];          for (int i = 0; i < mainarr.count; i++)     {                  Container *data = [[Container alloc] init];                  NSMutableDictionary *subdic = [mainarr objectAtIndex:i];                  NSMutableDictionary *secnamedic = [subdic objectForKey:@"im:name"];                  NSString *stringsecname = [secnamedic objectForKey:@"label"];                  data.strsecname = stringsecname;                  NSMutableArray *imgarr = [subdic objectForKey:@"im:image"];                  for (int j = 0; j < imgarr.count; j++)         {             NSMutableDictionary *secsubdic = [imgarr objectAtIndex:0];                          NSString *stringimg = [secsubdic objectForKey:@"label"];             data.strimg=stringimg;                    }                [arrobj addObject:data];     }        [tblobj reloadData]; Method ( 2) :- 1. First put the json folder in your new project Or Exiting project ...(that given below) in this Folder  include the AsiHttp,json,singlton,Staticclass,Singleton folder .   Click here for Download Jason file :-   A this file must import in your bundel..... 2. json folder contain all the non ARC file so set the flag (-fno-objc-arc ) in compile sources.      (go to Build Phases --> compile sources ---> set flag to -fno-objc-arc) 3. add following  framework in your project     1  -  security.framework     2  -  systemConfiguratin.framework     3 -   libz.dylib     4  -  MobileCoreServices.framework     5  -  CFNetwork.framework     6  -  libxml2.dylib 4. inser new  path in header searchpath. (go Build Setting -> Search path-->Header Search Paths) /usr/include/libxml2  and  finally build your project..(cmd +b). (if error occur than see and check again all step).  NOTE :- if you get some syntax error then double click on them and fix -it . so no error occur than ... Then start you project to working json file.. First of all Import These Three files. #import "Singleton.h" #import "HttpQueue.h" #import "NXJsonParser.h" Then After In ViewDidLoad method register a notification. -(void)viewDidLoad {   [super viewDidLoad];    [[NSNotificationCenter defaultCenter] removeObserver:self name:@"1" object:nil];          [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(getAllAPIDataCompletion:) name:@"1" object:nil];          [[NSNotificationCenter defaultCenter] removeObserver:self name:@"-1" object:nil];          [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(getAllAPIDataFail:) name:@"-1" object:nil]; } send request using httpQueue class and get response to given Method.  -(void)viewWillAppear:(BOOL)animated {          [super viewWillAppear:animated];          NSString *myreqstr=[NSString stringWithFormat:@"http://phobos.apple.com/WebObjects/MZStoreServices.woa/ws/RSS/toppaidapplications/limit=10/json"]; // using The Raywendrlich json api for demo          [[HttpQueue sharedSingleton] getItems:myreqstr :1];      } When request is successful get all data This method. -(void ) getAllAPIDataCompletion : (NSNotification *)notification {          NSDictionary *dict = [notification userInfo];          ASIHTTPRequest *res = [dict objectForKey:@"index"];          NXJsonParser * parser = [[NXJsonParser alloc] initWithData:[res responseData]];          id result = [parser parse:nil ignoreNulls:NO];          NSDictionary *maindic = (NSDictionary *)result;     NSDictionary *feeddic = [maindic objectForKey:@"feed"];     NSArray *entryarr = [feeddic objectForKey:@"entry"];               for (int i=0; i<entryarr.count; i++)     {         Container *contain = [[Container alloc] init];                           NSDictionary *subdic = [entryarr objectAtIndex:i];         NSDictionary *namedic = [subdic objectForKey:@"im:name"];         NSString *strname = [namedic objectForKey:@"label"];                  contain.strname = strname;                  NSArray *imgarr = [subdic objectForKey:@"im:image"];         for (int j=0; j<imgarr.count; j++)         {             NSDictionary *imgdic = [imgarr objectAtIndex:j];             NSString *strimg = [imgdic objectForKey:@"label"];                          contain.strimg = strimg;                      }                  [myarr addObject:contain];     }     [tblobj reloadData]; } And  Fail the reason of wrong url and network fail then call this method .. -(void ) getAllAPIDataFail : (NSNotification *)notification {          NSDictionary *dict = [notification userInfo];          ASIHTTPRequest *res = [dict objectForKey:@"index"];          NXJsonParser * parser = [[NXJsonParser alloc] initWithData:[res responseData]];          id result = [parser parse:nil ignoreNulls:NO];          NSLog(@"result=%@",result);      } Run This project and get following out put if you get error please see above the step again . Output in Log. Well, This time to Get the useful data in this all Data . In this result first `{} `contain (NSDictionary ) and `( )`Or `[ ]`contain  (NSArray). if you want to get Activity`s value from the loans Then you have to implement This Step by Step. Here in the Data `{` indicate Dictionary so we hold This Dictionary in NSDictionary .  For Api :-  http://phobos.apple.com/WebObjects/MZStoreServices.woa/ws/RSS/toppaidapplications/limit=10/json     NSDictionary *maindic = (NSDictionary *)result;     NSDictionary *feeddic = [maindic objectForKey:@"feed"];     NSArray *entryarr = [feeddic objectForKey:@"entry"];               for (int i=0; i<entryarr.count; i++)    {     Container *contain = [[Container alloc] init];     // create object of Nsobject(Container)                           NSDictionary *subdic = [entryarr objectAtIndex:i];          NSDictionary *namedic = [subdic objectForKey:@"im:name"];         NSString *strname = [namedic objectForKey:@"label"];                  contain.strname = strname;                              // fetch data in container                  NSArray *imgarr = [subdic objectForKey:@"im:image"];         for (int j=0; j<imgarr.count; j++)         {             NSDictionary *imgdic = [imgarr objectAtIndex:j];             NSString *strimg = [imgdic objectForKey:@"label"];                          contain.strimg = strimg;                                    // fetch data in container                      }                  [myarr addObject:contain];     }               [tblobj  reloadData]; Note :- In the Method of Table view new Object is needed to Show the Data. ex :- - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {     Container *data = [myarr objectAtIndex:indexPath.row];          MyCell *cell = [tblobj dequeueReusableCellWithIdentifier:@"cell"];          cell.lbl.text = data.strname;     cell.imageView.image=[UIImage imageWithData:[NSData dataWithContentsOfURL:                                                     [NSURL URLWithString:data.strimg]]];          return cell; } I think Its May be Very Helpful to You.Thanks!!