以编程方式设置导航栏？

Question

我是以编程方式呈现视图控制器，但是当出现视图控制器时，它缺少导航栏。在调用它时，有没有办法在这个新的视图控制器上以编程方式设置导航栏？

到目前为止，这是我的代码：

//LOAD CRICKET GAME
if gameGAMETYPE[index] == "Cricket" && gameGAMEPLAYERS[index] == "1" {

    println("LOAD ONE PLAYER CRICKET")
    //load OnePlayerCricket.swift
    //replace tableData with TABLEDATA

    //programatically present new view controller
    if let resultController = storyboard!.instantiateViewControllerWithIdentifier("OnePlayerCricketVC") as? OnePlayerCricket {
        presentViewController(resultController, animated: true, completion: nil)

        //programmatically present a navigation bar

         NEED HELP HERE!!!! thank you :)

}

Answer 1

以下是从firstView启动导航控制器的代码：

if let resultController = storyboard!.instantiateViewControllerWithIdentifier("OnePlayerCricketVC") as? OnePlayerCricket {
        let navController = UINavigationController(rootViewController: resultController) // Creating a navigation controller with resultController at the root of the navigation stack.
        self.presentViewController(navController, animated:true, completion: nil)
    }

修改

如果您想在该导航中添加后退按钮，请将此代码用于OnePlayerCricket.swift类：

override func viewDidLoad() {
    super.viewDidLoad()

    let backButton = UIBarButtonItem(title: "Back", style: UIBarButtonItemStyle.Plain, target: self, action: "goBack")
    navigationItem.leftBarButtonItem = backButton

}

func goBack(){
    dismissViewControllerAnimated(true, completion: nil)
}

如果你想从firstView完成所有这些操作，那么这里是你的代码：

@IBAction func btnPressed(sender: AnyObject) {


    if let resultController = storyboard!.instantiateViewControllerWithIdentifier("OnePlayerCricketVC") as? OnePlayerCricketVC {
        resultController.navigationItem.leftBarButtonItem = UIBarButtonItem(title: "Back", style: UIBarButtonItemStyle.Plain, target: self, action: "goBack")
        let navController = UINavigationController(rootViewController: resultController) // Creating a navigation controller with VC1 at the root of the navigation stack.
        self.presentViewController(navController, animated:true, completion: nil)
    }
}

func goBack(){
    dismissViewControllerAnimated(true, completion: nil)
}