Navigation Controller not work after using Present model controller - ios

Question

I have an view with 3 buttons in that whenver user clicked on 1st button click it goes to seconViewController
Used this code.
PerformViewController * pvc=[[PerformViewController alloc]initWithNibName:#"PerformViewController" bundle:nil];
[self presentViewController:pvc animated:YES completion:nil];
[self dismissViewControllerAnimated:YES completion:nil];
and another two buttons i used the [self.navigationController pushViewController:gmavc animated:YES];
it works fine but when used tapped on 1st button clicked present the secondViewController.
and whne back to it's viw controller i used this code
ViewController *vc=[[ViewController alloc]initWithNibName:#"ViewController" bundle:nil];
[self presentViewController:vc animated:YES completion:nil];
[self dismissViewControllerAnimated:YES completion:nil];
After back to parant view controller my another two button push navigation controller not working not why this happening.

Answer 1

#interface MainViewController : UIViewController
{
}
- (IBAction)presentClicked:(id)sender;
- (IBAction)nevigateClicked:(id)sender;
#end
#import "MainViewController.h"
#import "PresViewController.h"
#import "NavViewController.h"
#interface MainViewController ()
#end
#implementation MainViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)presentClicked:(id)sender {
PresViewController *preView = [[PresViewController alloc]initWithNibName:#"PresViewController" bundle:nil];
[self presentModalViewController:preView animated:YES];
}
- (IBAction)nevigateClicked:(id)sender {
NavViewController *navView = [[NavViewController alloc]initWithNibName:#"NavViewController" bundle:nil];
[self.navigationController pushViewController:navView animated:YES];
}
#end

Answer 2

Define #property (strong, nonatomic) UINavigationController *navigationCntr; in YourAppDelegate
Use following code for presenting the controller
YourAppDelegate *del = (YourAppDelegate *)[[UIApplication sharedApplication] delegate];
YourViewController *viewCntrl = [[YourViewController alloc] initWithNibName:#"YourViewController" bundle:[NSBundle mainBundle]];
UINavigationController *navContrl = [[UINavigationController alloc] initWithRootViewController:viewCntrl];
navContrl.navigationBarHidden = YES;
[del.navigationCntr presentModalViewController:navContrl animated:YES];
For dismissing
YourAppDelegate *delegate = (YourAppDelegate *)[[UIApplication sharedApplication] delegate];
[delegate.navigationCntr dismissModalViewControllerAnimated:YES];

Answer 3

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
MainViewController *mainView = [[MainViewController alloc]initWithNibName:#"MainViewController" bundle:nil];
UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:mainView];
self.window.rootViewController = nav;
return YES;
}

Answer 4

#import <UIKit/UIKit.h>
#interface PresViewController : UIViewController
{
}
- (IBAction)hideClicked:(id)sender;
#end
#import "PresViewController.h"
#interface PresViewController ()
#end
#implementation PresViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)hideClicked:(id)sender {
[self dismissViewControllerAnimated:YES completion:nil];
}
#end

Answer 5

#import <UIKit/UIKit.h>
#interface NavViewController : UIViewController
#end
#import "NavViewController.h"
#interface NavViewController ()
#end
#implementation NavViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end