No information is passed to the DetailView Objective-c - objective-c

Question

my problem - I want to pass information from the TableView in DetailView, but somewhere in the self.detailViewController.detailItem no value is passed.
that is:
self.detailViewController.detailItem =#"123";
NSString *sss = self.detailViewController.detailItem;
NSLog(#"%#", sss);
In NSLog output (null)
Here is my source code:
DetailViewController.h
#import <UIKit/UIKit.h>
#interface DetailViewController : UIViewController <UISplitViewControllerDelegate>
#property id detailItem;
#property id TitleOfDetail;
#property (weak, nonatomic) IBOutlet UILabel *detailDescriptionLabel;
#end
DetailViewController.m
#import "DetailViewController.h"
#interface DetailViewController ()
#property (strong, nonatomic) UIPopoverController *masterPopoverController;
- (void)configureView;
#end
#implementation DetailViewController
#pragma mark - Managing the detail item
-(void)setTitleOfDetail:(id)newTitleOfDetail {
NSLog(#"123");
if (_TitleOfDetail != newTitleOfDetail) {
_TitleOfDetail = newTitleOfDetail;
// Update the view.
[self configureView];
}
}
-(void)setDetailItem:(id)newDetailItem
{
NSLog(#"123");
if (_detailItem != newDetailItem) {
_detailItem = newDetailItem;
// Update the view.
[self configureView];
}
if (self.masterPopoverController != nil) {
self.title = self.TitleOfDetail;
[self.masterPopoverController dismissPopoverAnimated:YES];
}
}
- (void)configureView
{
// Update the user interface for the detail item.
NSLog(#"1%#", self.TitleOfDetail);
NSLog(#"2%#", [self.detailItem description]);
if (self.TitleOfDetail) {
self.title = self.TitleOfDetail;
}
if (self.detailItem) {
self.detailDescriptionLabel.text = [self.detailItem description];
}
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[self configureView];
}
…
myclass.h
#class DetailViewController;
#interface myclass : UITableViewController
#property DetailViewController *detailViewController;
#end
myclass.m
#import "choiseAvtoController.h"
#import "DetailViewController.h"
#interface myclass ()
#end
#implementation myclass
#synthesize detailViewController;
…
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
self.detailViewController.detailItem =#"123";
NSString *sss = self.detailViewController.detailItem;
NSLog(#"%#", sss);
}
In what may be the problem and how to fix it?
P.S. Sorry for my english, I'm just learning))

Answer 1

Since you are using a storyboard, you should be opening the detail controller on a segue.
Look up the segue identifier (say, it's OpenDetail) in the story board, then add the following code to your initial controller:
-(void)prepareForSegue:(UIStoryboardPopoverSegue*)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"OpenDetail"]) {
DetailViewController *dest = segue.destinationViewController;
dest.detailItem =#"123";
}
}