Question

您好我已经以编程方式创建了一个视图。我已经添加了标签和文本字段。但是当我点击文本字段时，文本字段不起作用。它甚至没有调用它的委托方法。请帮忙。

in for循环我正在调用此返回方法来创建文本字段

widgetsView.addSubview(createTextFieldForDropDown(entity,ival:i,ypos: posY))

//使用文本字段和标签创建视图的方法

func createTextFieldForDropDown(entity:ListingCategoryFeaturesEntity,ival:Int,ypos:CGFloat) -> UIView
    {
        var posY = ypos
        var posX = CGFloat(0)
        let width = (SCREEN_WIDTH/2)-15
        var height = CGFloat(40)

        let viewRadio = UIView()
        viewRadio.frame = CGRectMake(posX, posY, width, height)
        viewRadio.backgroundColor = UIColor.greenColor()
        height = 40

        posY = 0

        let lblTitle = UILabel()
        lblTitle.frame = CGRectMake(posX, posY, width, height)
        lblTitle.text = entity.strDisplayName
                lblTitle.backgroundColor = UIColor.redColor()
        lblTitle.font = GRAPHICS.FONT_REGULAR(16)
        viewRadio.addSubview(lblTitle)

        let tag = 9000
        posX = lblTitle.frame.maxX+10

        var textField = UITextField()
        textField.frame = CGRectMake(posX, posY, width, height)
        textField = returnTextFieldsProperties(textField, placeHolderText: "", tagValue: tag+ival)
        textField.backgroundColor = UIColor.blueColor()
        textField.becomeFirstResponder()
        viewRadio.addSubview(textField)


        return viewRadio
    }

//返回文本字段属性的方法

func returnTextFieldsProperties(textField : UITextField ,placeHolderText : String ,tagValue : Int) -> UITextField
    {
        textField.attributedPlaceholder = NSAttributedString(string:placeHolderText,
            attributes:[NSForegroundColorAttributeName: UIColorFromRGB(colorLightGray, alpha: 1.0)])
        textField.font = GRAPHICS.FONT_REGULAR(14)
        textField.textAlignment = NSTextAlignment.Left
        textField.textColor = UIColor.blackColor()
        textField.delegate = self
        textField.userInteractionEnabled = true
        textField.returnKeyType = UIReturnKeyType.Next
        let view_left = UIView()
        view_left.frame =  CGRectMake(20,0,10,textField.frameHeight)
        textField.leftView = view_left
        textField.leftViewMode = UITextFieldViewMode.Always
        textField.borderStyle = UITextBorderStyle.RoundedRect
        textField.backgroundColor = UIColor.clearColor()
        textField.autocorrectionType = .No
        textField.tag = tagValue
        return textField
    }

Answer 1

尝试删除：

textField.becomeFirstResponder()

这可能是问题所在，因为您已经标记了所有文本字段，但我想，您想要的只是您点击的文本字段应该是第一响应者。

Answer 2

我认为您没有设置委托方法，请检查项目中使用的以下内容，

import UIKit
class ViewController: UIViewController, UITextFieldDelegate

如果您创建文本字段，则最初设置委托方法为

var textField = UITextField()
textField.frame = CGRectMake(posX, posY, width, height)
textField = returnTextFieldsProperties(textField, placeHolderText: "", tagValue: tag+ival)

**textField.delegate = self**

textField.backgroundColor = UIColor.blueColor()
viewRadio.addSubview(textField)

希望它有用

Answer 3

问题是您的textField不在其超级视图viewRadio的范围内。使viewRadio宽度足以容纳标签和textView：

变化：

viewRadio.frame = CGRectMake(posX, posY, width, height)

为：

viewRadio.frame = CGRectMake(posX, posY, SCREEN_WIDTH, height)

Answer 4

简单的答案，只需编写委托方法并在情节提要中设置UITextField的委托，或在viewDidLoad中手动设置

写这样的东西，它将完美地工作。

list()

UITextField没有响应

4 个答案: