NSString is coming nil - ios

Question

I am new to iOS. Its my first app in which I am calling JSON date from server.
I have to store coming values in tabkeviewcell, but when I am setting value in NSString it is getting nil.
Below is my code :-
.h file
#interface SecondViewController : UIViewController<UITableViewDelegate,UITableViewDataSource,UITextFieldDelegate>
#property (strong, nonatomic) IBOutlet UITableView *tableview;
#property(strong,nonatomic) NSMutableDictionary *jsonresponse;
#property(strong, nonatomic) NSMutableArray *jsonresultarr;
.m file
- (void)viewDidLoad {
[self retrievedata];
[super viewDidLoad];
// Do any additional setup after loading the view.
}
-(void) retrievedata
{
//NSMutableArray *jsonresultarr=[NSMutableArray new];
NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:[NSURL URLWithString:#"http://magmasysdev.com/ddc/getAllCompanies.php"]]; // this is your request url
[request setHTTPMethod:#"GET"];
[request setValue:#"application/json;charset=UTF-8" forHTTPHeaderField:#"content-type"];
NSError *err;
NSURLResponse *response;
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err];
NSArray *jsonArray = [NSJSONSerialization JSONObjectWithData:responseData options: NSJSONReadingMutableContainers error: &err]; // here parsing the array
NSArray *firstArry=[[jsonArray objectAtIndex:1]objectForKey:#"company_data"];
for (int i=0; i<[firstArry count]; i++)
{
_jsonresponse= [firstArry objectAtIndex:i];
NSString *Company_Id=[_jsonresponse objectForKey:#"Company_Id"];
NSString *Company_Name=[_jsonresponse objectForKey:#"Company_Name"];
NSString *Company_Address=[_jsonresponse objectForKey:#"Company_Address"];
NSString *Company_Email=[_jsonresponse objectForKey:#"Company_Email"];
NSString *Company_Tel_Num=[_jsonresponse objectForKey:#"Company_Tel_Num"];
NSString *Company_Website=[_jsonresponse objectForKey:#"Company_Website"];
NSString *Company_Fax_Num=[_jsonresponse objectForKey:#"Company_Fax_Num"];
[_jsonresultarr addObject:Company_Id];
[_jsonresultarr addObject:Company_Name];
[_jsonresultarr addObject:Company_Address];
[_jsonresultarr addObject:Company_Email];
[_jsonresultarr addObject:Company_Tel_Num];
[_jsonresultarr addObject:Company_Website];
[_jsonresultarr addObject:Company_Fax_Num];
}
[_tableview reloadData];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if(self.jsonresultarr) // coming nil
{ return _jsonresultarr.count;
}
return 7;
}
Here is my output response. Can anyone please give me an example or try to modify my code so that I can store data in text boxes.
[{"status":"Y"},{"company_data":[{"Company_Id":"5","Company_Name":"SANTE (PVT) LIMITED","Company_Address":"245\/2-Z P.E.C.H.S Block-6 \nKarachi-75400,Pakistan","Company_Email":"sante#sante.com.pk","Company_Tel_Num":"4520507, 4533425","Company_Website":"www.sante.com.pk","Company_Fax_Num":"4.54885e+006"}

Answer 1

as per your response of array , you get dictionary at index "1" for key "company_data".
NSDictionary *dict = [[innerObject objectAtIndex:1] objectForKey:#"company_data"];
NSString *strCompanyId = [dict objectForKey:#"Company_Id"];
NSString *strCompanyName = [dict objectForKey:#"Company_Name"];
NSString *strCompanyAddress = [dict objectForKey:#"Company_Address"];
NSString *strCompanyEmail = [dict objectForKey:#"Company_Email"];
NSString *strCompanyPhone = [dict objectForKey:#"Company_Tel_Num"];
NSString *strCompanySite = [dict objectForKey:#"Company_Website"];
NSString *strCompanyFax = [dict objectForKey:#"Company_Fax_Num"];
You can set appropriate textField with this strings!

Answer 2

NSMutableArray *jsonresultarr=[NSMutableArray new]; // declare this array in globally
NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:[NSURL URLWithString:#"http://magmasysdev.com/ddc/getAllCompanies.php"]]; // this is your request url
[request setHTTPMethod:#"GET"];
[request setValue:#"application/json;charset=UTF-8" forHTTPHeaderField:#"content-type"];
NSError *err;
NSURLResponse *response;
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err];
NSArray *jsonArray = [NSJSONSerialization JSONObjectWithData:responseData options: NSJSONReadingMutableContainers error: &err]; // here parsing the array
NSArray *firstArry=[[jsonArray objectAtIndex:1]objectForKey:#"company_data"];
for (int i=0; i<[firstArry count]; i++)
{
NSMutableDictionary *getjsonresponse= [firstArry objectAtIndex:i];
NSString *Company_Id=[getjsonresponse objectForKey:#"Company_Id"];
NSString *Company_Name=[getjsonresponse objectForKey:#"Company_Name"];
NSString *Company_Address=[getjsonresponse objectForKey:#"Company_Address"];
NSString *Company_Email=[getjsonresponse objectForKey:#"Company_Email"];
NSString *Company_Tel_Num=[getjsonresponse objectForKey:#"Company_Tel_Num"];
NSString *Company_Website=[getjsonresponse objectForKey:#"Company_Website"];
NSString *Company_Fax_Num=[getjsonresponse objectForKey:#"Company_Fax_Num"];
}
another choice
for (NSDictionary *tmp in firstArry)
{
NSMutableDictionary * itemshowdetails=[[NSMutableDictionary alloc]init];
[itemshowdetails setValue:[tmp objectForKey:#"Company_Id"] forKey:#"Company_Id"];
[itemshowdetails setValue:[tmp objectForKey:#"Company_Name"] forKey:#"Company_Name"];
[itemshowdetails setValue:[tmp objectForKey:#"Company_Address"] forKey:#"Company_Address"];
[itemshowdetails setValue:[tmp objectForKey:#"Company_Email"] forKey:#"Company_Email"];
[itemshowdetails setValue:[tmp objectForKey:#"Company_Tel_Num"] forKey:#"Company_Tel_Num"];
[itemshowdetails setValue:[tmp objectForKey:#"Company_Website"] forKey:#"Company_Website"];
[itemshowdetails setValue:[tmp objectForKey:#"Company_Fax_Num"] forKey:#"Company_Fax_Num"];
[jsonresultarr addObject:itemshowdetails];
}
in your retrieve
NSString *pass = [[jsonresultarr objectAtIndex:0] objectForKey:#"Company_Id"]; // here pass your index if already I know else call the line inside the for loop
#pragma mark - tablevie data source
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [jsonresultarr count];
}
- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
{
return 0.01f;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
.....
// here pass your details
cell.Company_Id.text = [[jsonresultarr objectAtIndex:indexPath.row ] objectForKey:#"Company_Id"];
cell.Company_Name.text = [[jsonresultarr objectAtIndex:indexPath.row ] objectForKey:#"Company_Name"];
cell.Company_Address.text = [[jsonresultarr objectAtIndex:indexPath.row ] objectForKey:#"Company_Address"];
cell. Company_Email.text = [[jsonresultarr objectAtIndex:indexPath.row ] objectForKey:#"Company_Email"];
cell.Company_Tel_Num.text = [[jsonresultarr objectAtIndex:indexPath.row ] objectForKey:#"Company_Tel_Num"];
cell.Company_Website.text = [[jsonresultarr objectAtIndex:indexPath.row ] objectForKey:#"Company_Website"];
cell.Company_Fax_Num.text = [[jsonresultarr objectAtIndex:indexPath.row ] objectForKey:#"Company_Fax_Num"];
return cell;
}

Answer 3

-(void) retrievedata
{
NSURL *url=[NSURL URLWithString:#"http://magmasysdev.com/ddc/getAllCompanies.php"];
NSData *data=[NSData dataWithContentsOfURL:url];
jsonarray=[NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
// companyarray = [[NSMutableArray alloc]init];
NSMutableArray *innerObject = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil]; // plz check here data is not nil
NSDictionary *dicarr=[innerObject objectAtIndex:1];
NSArray *arrCom=[dicarr objectForKey:#"company_data"];
for (int i=0;i<arrCom.count; i++)
{
NSDictionary *dicSub =[arrCom objectAtIndex:i];
NSString *strId=[dicSub objectForKey:#"Company_Id"];
NSString *strAddress=[dicSub objectForKey:#"Company_Address"];
}
}