iphone - iOS - How to print value in textfield using delegate -

i new ios. have problem have solution it? not able print json value in textfield contactviewcontroller.m file:

  - (void)viewdidload     {         [super viewdidload];          // additional setup after loading view, typically nib.          fname.text=@"hello";     } 

after view loaded hello value shown in text box, when call list button json values:

-(ibaction)list:(id)sender{     vedant=[[webserviceviewcontroller alloc]init];      [vedant listcontacts];  } 

then webserviceviewcontroller.m pass jsonresponse same file i.e contactviewcontroller.m , parse json value , print not shows value in text field

-(void)allcontacts:(nsstring *)jsonresponse{     nslog(@"%@",jsonresponse);       nsdata *jsondata = [jsonresponse datausingencoding:nsasciistringencoding];     //     nserror *err;     nsdictionary *json = [nsjsonserialization jsonobjectwithdata:jsondata options:kniloptions error:&err];     int acccount =[json count];      for(int i=0;i<acccount;i++){          nsdata *jsondata = [jsonresponse datausingencoding:nsasciistringencoding];         //          //   nslog(@"%@",jsonresponse);          nserror *err;         nsdictionary *json = [nsjsonserialization jsonobjectwithdata:jsondata options:kniloptions error:&err];          nsstring *firstname = [nsstring stringwithformat:@"%@", [[json objectatindex:i] objectforkey:@"first_name"]];           nslog(@"%@",firstname);    //this prints actual first name in console          fname.text=firstname;         nslog(@"%@",fname.text);   //it prints "(null)" in console     }  } 

do need create delegate pass value?

yes, of creating such delegate article or example.

check if fname isn't nil. if forgot connect in interface builder, fname nil , messages sent (like settext:) ignored.