导航控制器推视图控制器 [英] Navigation Controller Push View Controller

问题描述

问题

如何使用按钮在内部事件中修饰，从一个视图控制器导航到另一个视图控制器？

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

更多信息

我在示例项目中尝试的步骤是：

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

1. 创建示例单一视图应用程序。

1. Create the sample single view application.

添加新文件 - > Objective-C类，带有XIB用户界面（ViewController2）。

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

在ViewController.xib中添加一个按钮并控制单击按钮到ViewController.h到在事件内部创建补充。

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

转到ViewController.m中新创建的IBAction并将其更改为此...

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];
}

代码运行没有错误，我用NSLog测试了按钮的功能。但是它仍然没有导航到第二个视图控制器。任何帮助将不胜感激。

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.

推荐答案

Swift3

 **Push**

喜欢

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

或更安全

  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)
        }
    }

现在

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

或更安全

   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)
}

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