ios - How we get data from server using the JSON query? -


**in code when add breakpoint viewdidload( ) function got greetingarray.count 0 when add breakpoint @ loop works , got results 3 values of greetingarray. possible reason no getting data server.there no problem server side.i check it.

- (void)viewdidload {     [super viewdidload];     greetingarray = [[nsmutablearray alloc] init];     greetingdictionary = [[nsmutabledictionary alloc] init];          nsstring *connectionstring;     connectionstring=[nsstring stringwithformat:@"http://xxx.xxx.x.xx/testmgt/api/%@",self.fieldname];      nsurl *url = [nsurl urlwithstring:connectionstring];     nsurlrequest *request = [nsurlrequest requestwithurl:url];     [nsurlconnection sendasynchronousrequest:request                                        queue:[nsoperationqueue mainqueue]                            completionhandler:^(nsurlresponse *response,                                                nsdata *data, nserror *connectionerror)      {          if (data.length > 0 && connectionerror == nil)          {              nslog(@"----------------------------------------------------");              nslog(@"data length = %d",data.length);             greetingmarray = [nsjsonserialization jsonobjectwithdata:data options:0 error:null];              nslog(@"%@",greetingmarray);              for(int = 0 ; i< greetingmarray.count; i++)              {                  greetingdictionary = (nsmutabledictionary *)[greetingmarray objectatindex:i];                  nslog(@"%@",greetingdictionary);                  connectionovertime *overtime = [[connectionovertime alloc] init];                  overtime.entrydate=[greetingdictionary valueforkey:@"entrydate"];                  [greetingarray addobject:overtime];                  nslog(@"%d",greetingarray.count);              }                }      }]; } 

     if don't answer try jsonframework library , import sbjsonparser.h    example try below code - (void)viewdidload { [super viewdidload]; // additional setup after loading view nib. self.chapterid=[[nsmutablearray alloc]init]; self.chaptername=[[nsmutablearray alloc]init]; nsurl *url=[nsurl urlwithstring:@"https://www.coursekart.com/webservice/load-subjects.php?api_key=68410920ghjflac878&standard_id=2&format=json"]; nsurlrequest *request=[[nsurlrequest alloc]initwithurl:url]; nserror *error; nsurlresponse *response;  nsdata *data=[nsurlconnection  sendsynchronousrequest:request returningresponse:&response error:&error]; if(data!=nil) {     nsstring *content=[[nsstring alloc] initwithdata:data encoding:nsutf8stringencoding];     if(content.length!=0)     {         sbjsonparser *parser=[[sbjsonparser alloc]init];         nsarray *dir=[[parser objectwithstring:content]objectforkey:@"subjectlist"];           for(int i=0;i<dir.count;i++)         {             nsdictionary *array=[dir objectatindex:i];             nsarray *data=[array objectforkey:@"data"];             nsdictionary *dat=(nsdictionary *)data;             nsstring *idch=[dat objectforkey:@"id"];             nsstring *slug=[dat objectforkey:@"slug"];              [chapterid addobject:idch];             [chaptername addobject:slug];            // nslog(@"%@",[chapterid objectatindex:0]);             //nslog(@"%@",[chaptername objectatindex:0]);          }     }    } }

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