UIBarButtonItem Cancel does not work - ios

Question

I want to cancel the second view controller with a UIBarButtonItem, but I just don't get the code right. Please help.
Viewcontroller.h
#import <UIKit/UIKit.h>
#import "SecondViewController.h"
#interface ViewController : UIViewController <SecondViewControllerDelegate>
#end
Viewcontroller.m
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.destinationViewController isKindOfClass:[SecondViewController class]]) {
SecondViewController *vc2 = segue.destinationViewController;
vc2.delegate = self;
}
}
-(void)dismissViewController
{
NSLog(#"dismissed");
[self dismissViewControllerAnimated:YES completion:nil];
}
#end
Secondviewcontroller.h
#import <UIKit/UIKit.h>
#protocol SecondViewControllerDelegate <NSObject>
- (void) dismissViewController;
#end
#interface SecondViewController : UIViewController
#property (weak, nonatomic) id <SecondViewControllerDelegate> delegate;
- (IBAction)backBarButtonItemPressed:(UIBarButtonItem *)sender;
#end
BackbarButton means cancelbutton
Secondviewcontroller.m
#import "SecondViewController.h"
#interface SecondViewController ()
#end
#implementation SecondViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)backBarButtonItemPressed:(UIBarButtonItem *)sender {
[self.delegate dismissViewController];
}
#end

Answer 1

You can dismiss in secondViewController,I do not see the meaning of Delegate in your code
- (IBAction)backBarButtonItemPressed:(UIBarButtonItem *)sender {
[self dismissViewControllerAnimated:true completion:nil];
}
If you use show segue,and you have a navigationController with these two ViewControllers,Use
- (IBAction)dismiss:(id)sender {
[self.navigationController popViewControllerAnimated:true];
}