导航ios 8 swift？

Question

我是IOS世界的新手。当我切换到一个只有在我登录时才能显示的新视图时，我在更改视图时遇到了麻烦。我在loginfuction中使用：

@IBAction func loginVerification(sender: UIButton!) {
        //Check with the cloud
        //temporary faking credentials

        var user = "n"
        var pass = "n"

        if usernameLogin.text == user &&
            passwordLogin.text == pass
        {
            println("Correct credentials")
            let homeviewcontroller = HomeViewController()

            self.presentViewController(homeviewcontroller, animated: true, completion: nil)


        }
        else
        {
            println("Wrong credentials!!")
        }
}

当我按下检查凭证的login按钮时，会触发上述功能。使用上面的线条使视图变为黑色。对如何让它工作有什么建议吗？关于视图之间的导航，有什么我可以遵循的教程吗？请不要对我这么苛刻:)

提前感谢！

Answer 1

您好，我会尝试苹果教程-他们写得相当好，并有代码样本。这是我在学习的时候用到的：https://developer.apple.com/library/ios/referencelibrary/GettingStarted/RoadMapiOS/SecondTutorial.html。本文特别介绍了如何使用故事板和Segues进行导航。如果您查看页面的左侧，您将看到其他教程的链接，这些教程在入门时可能会对您有所帮助。

Answer 2

尝试以下代码：

let controller: homeviewcontroller = self.storyboard?.instantiateViewControllerWithIdentifier("homeviewcontroller") as! homeviewcontroller
            self.presentViewController(controller, animated: true, completion: nil) 

       @IBAction func loginVerification(sender: UIButton!) {
        //Check with the cloud
        //temporary faking credentials

        var user = "n"
        var pass = "n"

        if usernameLogin.text == user &&
            passwordLogin.text == pass
        {
            println("Correct credentials")

let controller: homeviewcontroller = self.storyboard?.instantiateViewControllerWithIdentifier("homeviewcontroller") as! homeviewcontroller
            self.presentViewController(controller, animated: true, completion: nil)
        }
        else
        {
            println("Wrong credentials!!")
        }
}