Question

我正在尝试将我在myScrollView课程AddViewController中定义的所有元素（UItextfields）转移到另一个FormViewController，其中我只有一个空getFormView scrollview我想要显示myScrollView的所有元素，无论是以复制形式还是获得相同的形式。

我正在将myScrollView的子视图添加到getFormView，但这给了我错误在打开一个可选的

时意外地发现了nil

我通过获取输入来创建文本字段，就像设置输入为7一样，将在表单中生成七个文本字段并单击创建我希望这些测试字段应该在formViewController的uiscrollview中，即getformview

FormViewController

import UIKit

class FormViewController: UIViewController {

@IBOutlet weak var menu: UIBarButtonItem!

@IBOutlet weak var getFormView: UIScrollView!

override func viewDidLoad() {
    super.viewDidLoad()

    menu.target = revealViewController()
    menu.action = #selector(SWRevealViewController.revealToggle(_:))
    self.view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())


    getFormView.alwaysBounceVertical = true
    getFormView.scrollsToTop = true
    getFormView.isScrollEnabled = true
    getFormView.contentSize = CGSize(width: 343, height: 1500)

    print("formViewController")

    let mainStoryBoard: UIStoryboard = UIStoryboard(name: "Main", bundle : nil)
    let desController = mainStoryBoard.instantiateViewController(withIdentifier: "AddViewController") as! AddViewController


    self.view.addSubview(self.getFormView)
    self.getFormView.addSubview(desController.myScrollView)

}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
}
}

我的myScrollView的AddViewController图像

enter image description here

getFormView的FormViewController图像

enter image description here

AddViewController

import UIKit

class AddViewController: UIViewController {

var templateName : String?
var templateDesc : String?

var noButtons : Int?
var noTextFields : Int?
var noLabels : Int?


var xValue = 20, yValue = 100
var tagNo = 0
var textObjects : Array<Any>?
var incrementerText : Int?

var xButton = 15 , yButton = 90
var tagButton = 10
var buttonObject : Array<Any>?
var buttonIncreament : Int?

var xLabel = 10 , yLabel = 80
var tagLabel = 15
var labelObject : Array<Any>?
var labelIncreament : Int?


@IBOutlet weak var menu: UIBarButtonItem!

@IBOutlet weak var myScrollView: UIScrollView!


@IBOutlet weak var reset: UIButton!
@IBAction func reset(_ sender: Any) {

    let mainStoryBoard: UIStoryboard = UIStoryboard(name: "Main", bundle : nil)
    let desController = mainStoryBoard.instantiateViewController(withIdentifier: "AddViewController") as! AddViewController
    let newFrontViewController = UINavigationController.init(rootViewController:desController)
    revealViewController().pushFrontViewController(newFrontViewController, animated: true)

}


@IBOutlet weak var createForms: UIButton!
@IBAction func createForms(_ sender: Any) {



    let mainStoryBoard: UIStoryboard = UIStoryboard(name: "Main", bundle : nil)
    let desController = mainStoryBoard.instantiateViewController(withIdentifier: "FormViewController") as! FormViewController

   // desController.getFormView.addSubview(myScrollView)


    let newFrontViewController = UINavigationController.init(rootViewController:desController)
    revealViewController().pushFrontViewController(newFrontViewController, animated: true)



}





@IBAction func addForm(_ sender: Any) {

    let alertController = UIAlertController(title: "Create Template", message: "", preferredStyle: .alert)

    alertController.extendedLayoutIncludesOpaqueBars = true

    alertController.addTextField { (textField: UITextField) in
      //  textField.keyboardAppearance = .dark
        textField.keyboardType = .default
        textField.autocorrectionType = .default
        textField.placeholder = "Title"
        textField.clearButtonMode = .whileEditing

    }

    alertController.addTextField { (textField: UITextField) in
        //textField.keyboardAppearance = .dark
        textField.keyboardType = .default
        textField.autocorrectionType = .default
        textField.placeholder = "Description"
        textField.clearButtonMode = .whileEditing
    }


    let okAction = UIAlertAction(title: "Continue", style: UIAlertActionStyle.default) {
       UIAlertAction in
    print("Ok action")

            let templateText = alertController.textFields![0]
            let descriptionText = alertController.textFields![1]
        self.templateName = templateText.text!
        self.templateDesc = descriptionText.text!

        if self.templateName?.isEmpty == false && self.templateDesc?.isEmpty == false {

        print("Template: \(templateText.text!)\nDescription: \(descriptionText.text!)")
        print("\(String(describing: self.templateName!)), \(String(describing: self.templateDesc!))")

        self.dismiss(animated: true, completion: nil)

        self.drawPop()
    }
    else {
        self.okAlert()
    }


    }
    let cancelAction = UIAlertAction(title: "Cancel", style: .destructive) {
        UIAlertAction in
        self.dismiss(animated: true, completion: nil)
        NSLog("Cancel Pressed")
    }


    //alertController.addAction(alertActionOkay)
    // Add the actions
    alertController.addAction(cancelAction)
    alertController.addAction(okAction)
 //   alertController.willChangeValue(forKey: "Continue")
    // Present the controller
    self.present(alertController, animated: true, completion: nil)

}


func drawPop() {

    let alertController = UIAlertController(title: "\(self.templateName!)", message: "\(self.templateDesc!)", preferredStyle: .alert)

    //attributing textfields labels



    alertController.addTextField { (textField: UITextField) in
        //textField.keyboardAppearance = .dark
        textField.keyboardType = UIKeyboardType.numberPad
       // textField.keyboardType = .default
        textField.placeholder = "TextFileds"
        textField.clearButtonMode = .whileEditing

    }

   alertController.addTextField { (textField: UITextField) in
       // textField.keyboardAppearance = .dark
        textField.keyboardType = UIKeyboardType.numberPad
        textField.autocorrectionType = .default
        textField.placeholder = "Buttons"
        textField.clearButtonMode = .whileEditing
    }

    alertController.addTextField { (textField: UITextField) in
        // textField.keyboardAppearance = .dark
        textField.keyboardType = UIKeyboardType.numberPad
        textField.autocorrectionType = .default
        textField.placeholder = "Labels"
        textField.clearButtonMode = .whileEditing
    }


    // Create the actions
    let okAction = UIAlertAction(title: "Done", style: UIAlertActionStyle.default) {
        UIAlertAction in
        NSLog("OK Pressed")

        let notextFieldText = alertController.textFields![0]
        let noButtonText = alertController.textFields![1]
        let noLabelText = alertController.textFields![2]


        self.noTextFields = Int(notextFieldText.text!)
        self.noButtons = Int(noButtonText.text!)
        self.noLabels = Int(noButtonText.text!)

        print("Template: \(notextFieldText.text!)\nDescription: \(noButtonText.text!)")
        print("\(noLabelText.text!)")

        print("\(String(describing: self.noTextFields!)), \(String(describing: self.noButtons!)) , \(String(describing: self.noLabels!))")




        self.createForms.isHidden = false
        self.myScrollView.isHidden = false
        self.reset.isHidden = false



        self.incrementerText = 20
        if self.noTextFields! > 0 {
            for _ in 0..<self.noTextFields! {
                print ("hello")

                let sampleTextField =  UITextField(frame: CGRect(x: self.xValue, y: self.yValue, width: 300, height: 40))
                sampleTextField.placeholder = "Enter text here"
                sampleTextField.font = UIFont.systemFont(ofSize: 15)
                sampleTextField.borderStyle = UITextBorderStyle.roundedRect
                sampleTextField.autocorrectionType = UITextAutocorrectionType.no
                sampleTextField.keyboardType = UIKeyboardType.default
                sampleTextField.returnKeyType = UIReturnKeyType.done
                sampleTextField.clearButtonMode = UITextFieldViewMode.whileEditing;
                sampleTextField.contentVerticalAlignment = UIControlContentVerticalAlignment.center
                sampleTextField.delegate = self as? UITextFieldDelegate
                sampleTextField.tag = self.tagNo
               // self.view.addSubview(sampleTextField)


                //trying to print at container view
               self.view.addSubview(self.myScrollView)
               self.myScrollView.addSubview(sampleTextField)



               let frametext = sampleTextField.frame.size.height

                self.textObjects?.append(sampleTextField)

                self.yValue = self.yValue + Int(frametext) + 20
                self.xValue = 20
            }
        }

        else {
            print("no text field found")
        }




        self.buttonIncreament = 20
        if self.noButtons! > 0 {
            for _ in 0..<self.noButtons! {
                print ("Buttons")

                let sampleButton =  UIButton(frame: CGRect(x: self.xButton, y: self.yButton, width: 150, height: 25))

                sampleButton.contentVerticalAlignment = UIControlContentVerticalAlignment.center
                sampleButton.tag = self.tagNo
               // self.view.addSubview(sampleButton)
                let frametext = sampleButton.frame.size.height

                self.view.addSubview(self.myScrollView)
                self.myScrollView.addSubview(sampleButton)


                self.buttonObject?.append(sampleButton)

                self.yButton = self.yButton + Int(frametext) + 20
                self.xButton = 20

            }
        }

        else {
            print("no button found")
        }





        self.labelIncreament = 20
        if self.noLabels! > 0 {
            for _ in 0..<self.noLabels! {
                print ("Labels")

                let sampleLabel =  UILabel(frame: CGRect(x: self.xLabel, y: self.yLabel, width: 150, height: 25))

               // sampleLabel.contentVerticalAlignment = UIControlContentVerticalAlignment.center
                sampleLabel.tag = self.tagNo
                // self.view.addSubview(sampleButton)
                let frameLabel = sampleLabel.frame.size.height

                self.view.addSubview(self.myScrollView)
                self.myScrollView.addSubview(sampleLabel)


                self.labelObject?.append(sampleLabel)

                self.yLabel = self.yLabel + Int(frameLabel) + 20
                self.xLabel = 20

            }
        }

        else {
            print("no button found")
        }















        self.dismiss(animated: true, completion: nil)
    }

    let cancelAction = UIAlertAction(title: "Cancel", style: .destructive) {
        UIAlertAction in
        self.dismiss(animated: true, completion: nil)
        NSLog("Cancel Pressed")
    }

    //alertController.addAction(alertActionOkay)
    // Add the actions
    alertController.addAction(cancelAction)
    alertController.addAction(okAction)

    // Present the controller
    self.present(alertController, animated: true, completion: nil)

}


func createForm() {

    let sampleTextField =  UITextField(frame: CGRect(x: 20, y: 100, width: 300, height: 40))
    sampleTextField.placeholder = "Enter text here"
    sampleTextField.font = UIFont.systemFont(ofSize: 15)
    sampleTextField.borderStyle = UITextBorderStyle.roundedRect
    sampleTextField.autocorrectionType = UITextAutocorrectionType.no
    sampleTextField.keyboardType = UIKeyboardType.default
    sampleTextField.returnKeyType = UIReturnKeyType.done
    sampleTextField.clearButtonMode = UITextFieldViewMode.whileEditing;
    sampleTextField.contentVerticalAlignment = UIControlContentVerticalAlignment.center
    sampleTextField.delegate = self as? UITextFieldDelegate
    self.view.addSubview(sampleTextField)


}

func okAlert() {

let alertController = UIAlertController(title: "Oops!", message: "Enter required data", preferredStyle: .alert)

let defaultAction = UIAlertAction(title: "OK", style: .default, handler: nil)
alertController.addAction(defaultAction)

present(alertController, animated: true, completion: nil)

}

/*

let scrollmyView : UIScrollView  = {
    let scrollView = UIScrollView()

    scrollView.alwaysBounceVertical = true
    scrollView.scrollsToTop = true
    // myScrollView.alwaysBounceHorizontal = true
    scrollView.isScrollEnabled = true
    scrollView.contentSize = CGSize(width: 200, height: 1500)


    return scrollView

}()
*/

override func viewDidLoad() {
    super.viewDidLoad()

    menu.target = revealViewController()
    menu.action = #selector(SWRevealViewController.revealToggle(_:))
    self.view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())




      myScrollView.alwaysBounceVertical = true
      myScrollView.scrollsToTop = true
     // myScrollView.alwaysBounceHorizontal = true
      myScrollView.isScrollEnabled = true
      myScrollView.contentSize = CGSize(width: 343, height: 1500)
   // scroller.contentSize = CGSize(width: yourWidth, height: yourHeight)


    createForms.isHidden = true
    myScrollView.isHidden = true
    reset.isHidden = true


}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

}

错误

Full screen error

Answer 1

如果您使用相同类型的元素，为什么要使用scrollview。最好的方法是使用表格视图。如果大多数行中的元素不同，我们使用scrollview。使用表格视图后，您不必复制任何内容。

解决问题的最佳方法：

如果你有相同类型的视图控制器，那么你可以使用一个视图控制器作为 AddViewController 和 FormViewController 。

Answer 2

在FormViewController中创建相同的UITextField。

当用户在AddViewController中填写表单时，使用AddViewController的文本字段文本更新FormViewController的文本字段

Answer 3

content.view.frame = CGRect(x: -UIScreen.main.bounds.size.width, y: 0, width: UIScreen.main.bounds.size.width, height: view.frame.size.height)
getFormView = content.scrollView
view.addSubview(content.scollView)
content.didMove(toParentViewController: self)

这里的内容是你要添加的视图控制器，它是AddViewController的实例

从一个视图控制器获取ScrollView中的元素副本到另一个swift ios

3 个答案: