Question

我想在按下按钮时转到另一个视图控制器我的btnSignUp，如果我写这样的代码我有错误＆＃34; sigabrt＆＃34;。我该怎么做？

import UIKit
import SnapKit

class ViewController: UIViewController {

    override func viewDidLoad() {

        super.viewDidLoad()

        self.view.backgroundColor = UIColor(red: 15/255, green: 52/255, blue: 100/255, alpha: 1)

        createTop()

    }

    override func didReceiveMemoryWarning() {

 super.didReceiveMemoryWarning()

}

    func createTop() {

        let topView = UIView()

        self.view.addSubview(topView)

        topView.backgroundColor = UIColor(red: 15/255, green: 52/255, blue: 100/255, alpha: 1)

        topView.snp_makeConstraints { (make) -> Void in

            make.width.equalTo((self.view.frame.width/10)*8)
make.height.equalTo(self.view.frame.height/5)

            make.centerX.equalTo(self.view)

            make.top.equalTo(self.view).offset(self.view.frame.height/15)
        }



        let btnSignUp = UIButton()

        self.view.addSubview(btnSignUp)

        btnSignUp.backgroundColor =  UIColor(red: 15/255, green: 52/255, blue: 100/255, alpha: 1)

        btnSignUp.layer.borderColor = UIColor.whiteColor().CGColor

        btnSignUp.layer.borderWidth = 1

        btnSignUp.layer.cornerRadius = 6

        btnSignUp.setTitle("Sign Up", forState: UIControlState.Normal)

        btnSignUp.titleLabel?.font = UIFont(name: "AvenirNext-Regular", size: 17)

        btnSignUp.snp_makeConstraints { (make) -> Void in

 make.width.equalTo(((self.view.frame.width/10)*7)+40)

            make.height.equalTo(self.view.frame.height/13)

            make.top.equalTo(ORView.snp_bottom).offset(20)

            make.centerX.equalTo(self.view)
        }

        btnSignUp.addTarget(self, action: "buttonAction", forControlEvents: UIControlEvents.TouchUpInside)

  func buttonAction(sender:UIButton!)
        {

            let signUpVC = SignUpViewController()

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

        }

    }
}

Answer 1

您的操作选择器buttonAction与您的函数声明不匹配 - 它需要一个参数，因此选择器将为buttonAction:

btnSignUp.addTarget(self, action: "buttonAction:", forControlEvents: UIControlEvents.TouchUpInside)

此外，请检查您的括号。您的buttonAction函数似乎在 func createTop()

中声明为
func createTop() { let topView = UIView() self.view.addSubview(topView) topView.backgroundColor = UIColor(red: 15/255, green: 52/255, blue: 100/255, alpha: 1) topView.snp_makeConstraints { (make) -> Void in make.width.equalTo((self.view.frame.width/10)*8) make.height.equalTo(self.view.frame.height/5) make.centerX.equalTo(self.view) make.top.equalTo(self.view).offset(self.view.frame.height/15) } let btnSignUp = UIButton() self.view.addSubview(btnSignUp) btnSignUp.backgroundColor = UIColor(red: 15/255, green: 52/255, blue: 100/255, alpha: 1) btnSignUp.layer.borderColor = UIColor.whiteColor().CGColor btnSignUp.layer.borderWidth = 1 btnSignUp.layer.cornerRadius = 6 btnSignUp.setTitle("Sign Up", forState: UIControlState.Normal) btnSignUp.titleLabel?.font = UIFont(name: "AvenirNext-Regular", size: 17) btnSignUp.snp_makeConstraints { (make) -> Void in make.width.equalTo(((self.view.frame.width/10)*7)+40) make.height.equalTo(self.view.frame.height/13) make.top.equalTo(ORView.snp_bottom).offset(20) make.centerX.equalTo(self.view) } btnSignUp.addTarget(self, action: "buttonAction", forControlEvents: UIControlEvents.TouchUpInside) } func buttonAction(sender:UIButton!) { let signUpVC = SignUpViewController() self.presentViewController(signUpVC, animated: true, completion: nil) }

最后，我怀疑您希望SignUpViewController()获取新的视图控制器 - 如果您使用的是要调用的故事板instantiateViewControllerWithIdentifier

Sigabrt在尝试显示另一个视图控制器时

1 个答案: