php - Show JSON values in textview with Objective C iOS App -

i'm new objective c i'm trying json data show in textview declared. (the textview called textview) here json data being sent php page:

{   "username": "derekshull",   "userbio": "this derekshulls bio",   "usersubmitted": "15" } 

and here objective c code requesting php url , getting json code:

nsurl *myurl = [[nsurl alloc]initwithstring:@"http://domain.com/json.php"];  nsdata *mydata = [[nsdata alloc]initwithcontentsofurl:myurl];  id myjson = [nsjsonserialization jsonobjectwithdata:mydata options:nsjsonreadingmutablecontainers error:nil];  nsarray *jsonarray = (nsarray *)myjson;  (id element in jsonarray) {     textview.text = [nslog(@"element: %@", [element description])];             } 

the json loading in debug bank. have searched , searched 3 days through stackoverflow , internet , i've come with, don't understand why it's not printing textview.

nsurl *myurl = [[nsurl alloc]initwithstring:@"http://domain.com/json.php"];  nsdata *mydata = [[nsdata alloc]initwithcontentsofurl:myurl];  nserror *error; nsarray *jsonarray = [nsjsonserialization jsonobjectwithdata:mydata options:nsjsonreadingmutablecontainers error:&error];  if(!error) {    (id element in jsonarray) {      textview.text = [nsstring stringwithformat:@"element: %@",element];         // text view contain last element loop         } } else{   textview.text = [nsstring stringwithformat:@"error--%@",[error description]];  }