objective c - iOS: How can i get location names of multiple longitudes and latitudes when data is coming from web service as a response? -

i need code. getting longitudes , latitudes response web service. need convert them location name , show in respective table view cell label.
following response, code , screen shot of view show converted city, country name, , correct code doing mistake.

#import <uikit/uikit.h> #import "jobtableviewcell.h" #import "slidenavigationcontroller.h" #import <corelocation/corelocation.h>  @interface jobpostedviewcontroller : uiviewcontroller <slidenavigationcontrollerdelegate, uitableviewdatasource, cllocationmanagerdelegate>  @property (strong, nonatomic) nsarray* job_id; @property (strong, nonatomic) nsarray* assigned_user_id; @property (strong, nonatomic) nsarray* job_title; @property (strong, nonatomic) nsarray* job_description; @property (strong, nonatomic) nsarray* job_priority; @property (strong, nonatomic) nsstring* job_longitude; @property (strong, nonatomic) nsarray* date; @property (strong, nonatomic) nsstring* job_latitude; @property (strong, nonatomic) nsarray* job_completed; @property (strong, nonatomic) nsarray* job_start_date; @property (strong, nonatomic) nsarray* bids;  @property (nonatomic, strong) clgeocoder *mygeocoder;  - (ibaction)onclickjobbutton:(id)sender;   @property (weak, nonatomic) iboutlet uibutton *sidenavigation; @property (weak, nonatomic) iboutlet uitableview *jobpostedtableview;  @end `      - (void)viewdidload {     [super viewdidload];     // additional setup after loading view.     self.jobpostedtableview.datasource = self;      //slide navigation     [self.sidenavigation addtarget:[slidenavigationcontroller sharedinstance] action:@selector(toggleleftmenu) forcontrolevents:uicontroleventtouchupinside];      webmanager *manager = [webmanager sharedinstance];     [manager getjobpostedwithcompletionblock:^(id response){         nsdictionary *dictionary = (nsdictionary *)response;          // read data json         nsdictionary *responseobject = [dictionary objectforkey:@"response"];         nslog(@"the array%@",responseobject);          self.bids = [responseobject objectforkey:@"bids"];         self.job_description = [responseobject objectforkey:@"job_description"];         self.job_id = [responseobject objectforkey:@"job_id"];         self.job_completed = [responseobject objectforkey:@"job_completed"];         self.job_latitude = [responseobject objectforkey:@"job_latitude"];         self.job_longitude = [responseobject objectforkey:@"job_longitude"];         self.job_priority = [responseobject objectforkey:@"job_priority"];         self.job_start_date = [responseobject objectforkey:@"job_start_date"];         self.job_title = [responseobject objectforkey:@"job_title"];          [self.jobpostedtableview reloaddata];     }];          clgeocoder *ceo = [[clgeocoder alloc]init];         cllocation *loc = [[cllocation alloc]initwithlatitude:[self.job_latitude floatvalue] longitude:[self.job_longitude floatvalue]]; //insert coordinates          [ceo reversegeocodelocation:loc                   completionhandler:^(nsarray *placemarks, nserror *error) {                       clplacemark *placemark = [placemarks objectatindex:0];                       nslog(@"placemark %@",placemark);                       //string hold address                       [[placemark.addressdictionary valueforkey:@"formattedaddresslines"] componentsjoinedbystring:@", "];                       nslog(@"addressdictionary %@", placemark.addressdictionary);                       nsarray *ar = [placemark.addressdictionary objectforkey:@"locality"];                       nslog(@"placemark %@",ar); // extract city name                       nslog(@"placemark %@",placemark.country);  // give country name                    }           ];     }   #pragma mark - slidenavigationcontroller methods  - (bool)slidenavigationcontrollershoulddisplayleftmenu {      return yes; }  #pragma mark - tableview data source  - (nsinteger)tableview:(uitableview *)tableview numberofrowsinsection:(nsinteger)section {     return [self.job_title count]; }  - (nsinteger) numberofsectionsintableview:(uitableview *)tableview {     return 1; }  - (uitableviewcell *) tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath {     static nsstring *cellidentifier = @"jobtableviewcell";     jobtableviewcell *cell = (jobtableviewcell *)[self.jobpostedtableview dequeuereusablecellwithidentifier:cellidentifier];      if(cell == nil) {          cell = [[jobtableviewcell alloc]initwithstyle:uitableviewcellstyledefault reuseidentifier:cellidentifier];     }     // comparing array string display urgent image     if ([[self.job_priority objectatindex:indexpath.row]          isequaltostring:@"urgent"]) {         cell.urgentlabel.hidden = no;     } else {             cell.urgentlabel.hidden = yes;     }     // condition whether job completed open or closed     if ([[self.job_completed objectatindex:indexpath.row]          isequaltostring:@"1"]) {         cell.jobstatus.text = @"open";         [cell.jobstatus settextcolor:[uicolor colorwithred:(84/255.f) green:(56/255.f) blue:(255/255.f) alpha:1.0f]];         cell.flagimage.image = [uiimage imagenamed:@"jobposted_opened.png"];     } else {         cell.jobstatus.text = @"closed";         [cell.jobstatus settextcolor:[uicolor colorwithred:(179/255.f) green:(179/255.f) blue:(180/255.f) alpha:1.0f]];         cell.flagimage.image = [uiimage imagenamed:@"jobposted_closed.png"];     }       cell.jobtitle.text = [self.job_title objectatindex:indexpath.row];     cell.jobcontent.text = [self.job_description objectatindex:indexpath.row];     cell.bidslabel.text = [[self.bids objectatindex:indexpath.row ]stringvalue];     return cell;  }   - (void)didreceivememorywarning {     [super didreceivememorywarning];     // dispose of resources can recreated. } 

here's solution:

1. change nsstring nsarray of these properties:

   @property (strong, nonatomic) nsstring* job_longitude; @property (strong, nonatomic) nsstring* job_latitude; 

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2. add new property hold geocode results:

   @property (strong, nonatomic) nsmutabledictionary* reversedgeocodes; 

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3. set reversedgeocodes in viewdidload: method:

   self.reversedgeocodes = [nsmutabledictionary dictionary]; 

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4. add method reversed geocode (and save future):

   - (void)locationnamewithlat:(float)lat                         lng:(float)lng           completionhandler:(void (^)(nsstring *locationname, nserror *error))completion {     if (!lat || !lng)         completion(@"unknown location", nil);      if (!completion || !lat || !lng)         return;      nsstring *latstr = @(lat).description;     nsstring *lngstr = @(lng).description;      // each pair of lat , lng creating unique key , saving result     // don't have process same pair multiple times.     // example:     // lat = 23.039567; lng = 72.566004;     // key = @"23.03956772.566004"; value whatever corelocation returns     nsstring *key = [latstr stringbyappendingstring:lngstr];      if (key.length) {         if ([self.reversedgeocodes[key] length]) {             completion (self.reversedgeocodes[key], nil);         } else {             self.reversedgeocodes[key] = @"loading...";             clgeocoder *geocoder = [[clgeocoder alloc] init];             cllocation *location = [[cllocation alloc] initwithlatitude:lat longitude:lng];              [geocoder reversegeocodelocation:location                            completionhandler:^(nsarray *placemarks, nserror *error) {                                if (error) {                                    completion(@"unknown location", error);                                } else {                                    clplacemark *placemark = placemarks.firstobject;                                    nsstring *locationname = placemark.country; // default = country                                     if (placemark.locality.length) // add city if available                                        locationname = [nsstring stringwithformat:@"%@, %@", placemark.locality, placemark.country];                                     self.reversedgeocodes[key] = locationname.length ? locationname : @"unknown location";                                     completion(self.reversedgeocodes[key], nil);                                }                            }              ];         }     } else {         completion(@"unknown location", nil);     } } 

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5. call above method cellforrowatindexpat: method before return cell:

   float lat = self.job_latitude[indexpath.row]; float lng = self.job_longitude[indexpath.row];  [self locationnamewithlat:lat                       lng:lng         completionhandler:^(nsstring *locationname, nserror *error) {             cell.locationname.text = locationname;         }];  return cell; 

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p.s. let me know if missed or misspelled because typed of code on here...