Navigation Controller Push View Controller

Question

Question

How to navigate from one view controller to another simply using a button's touch up inside event?

More Info

What I tried in a sample project, in steps, was:

1. Create the sample single view application.

2. Add a new file -> Objective-C Class with XIB for user interface (ViewController2).

3. Add a button into ViewController.xib and control click the button to ViewController.h to create the touch up inside event.

4. Go to the newly made IBAction in ViewController.m and change it to this...

   - (IBAction)GoToNext:(id)sender  {     ViewController2 *vc2 = [[ViewController2 alloc] initWithNibName:@"ViewController2" bundle:nil];      [[self navigationController] pushViewController:vc2 animated:YES]; } 

The code runs without errors and I tested the button's functionality with NSLog. However it still doesn't navigate me to the second view controller. Any help would be appreciated.

Answer 1

Swift3

 **Push** 

do like

let storyboard = UIStoryboard(name: "Main", bundle: nil) let vc = storyboard.instantiateViewControllerWithIdentifier("NewsDetailsVCID") as NewsDetailsViewController   vc.newsObj = newsObj  navigationController?.pushViewController(vc,  animated: true) 

or safer

  if let viewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "NewsDetailsVCID") as? NewsDetailsViewController {         viewController.newsObj = newsObj         if let navigator = navigationController {             navigator.pushViewController(viewController, animated: true)         }     } 

present

   let storyboard = UIStoryboard(name: "Main", bundle: nil)    let vc = self.storyboard?.instantiateViewControllerWithIdentifier("NewsDetailsVCID") as! NewsDetailsViewController       vc.newsObj = newsObj            present(vc!, animated: true, completion: nil)   

or safer

   if let vc = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "NewsDetailsVCID") as? NewsDetailsViewController      {       vc.newsObj = newsObj     present(vc, animated: true, completion: nil)     }      //Appdelegate.m  - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {     self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];     // Override point for customization after application launch.     self.viewController = [[ViewController alloc] initWithNibName:@"ViewController"                                                        bundle:nil];     UINavigationController *navigation = [[UINavigationController alloc]initWithRootViewController:self.viewController];     self.window.rootViewController = navigation;     [self.window makeKeyAndVisible];     return YES; }   //ViewController.m  - (IBAction)GoToNext:(id)sender  {     ViewController2 *vc2 = [[ViewController2 alloc] init];          [self.navigationController pushViewController:vc2 animated:YES]; } 

swift

//Appdelegate.swift  func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {     self.window = UIWindow(frame: UIScreen.mainScreen().bounds)      let navigat = UINavigationController()     let vcw = ViewController(nibName: "ViewController", bundle: nil)      // Push the vcw  to the navigat     navigat.pushViewController(vcw, animated: false)      // Set the window’s root view controller     self.window!.rootViewController = navigat      // Present the window     self.window!.makeKeyAndVisible()     return true }  //ViewController.swift  @IBAction func GoToNext(sender : AnyObject) {     let ViewController2 = ViewController2(nibName: "ViewController2", bundle: nil)     self.navigationController.pushViewController(ViewController2, animated: true) }