Question

实际上我正在尝试更改每个文本字段的边框颜色（通过增加边框宽度）。

我使用stotyBoard给了textFieldEmailAddress.tag = 1和textFieldPassword.tag = 2.

我正在使用UITextFieldDelegate。

表示我的要求是： -
1.当我点击文本字段时，其边框颜色应为深蓝色（宽度= 0.8）和其他文本字段边框线颜色应为浅蓝色（宽度= 0.4）

如果我们不点击文字字段，其边框线颜色应为浅蓝色。（宽度= 0.4）。

但是我第一次点击文本字段时工作正常我遇到了问题，但是当我点击另一个文本字段时，它会给出深蓝色边框颜色。

问题是，如果textfield变为0.8，它在UI中不会恢复为0.4（意味着UI不更新，只有值更新为0.4）

委托方法或我的下面的代码是否有任何问题： -

//查看加载功能

override func viewDidLoad()
{
    //Set delegate 
    self.textFieldEmailAddress.delegate = self
    self.textFieldPassword.delegate = self

    //Create border line on text email address fields.
    self.borderline(textFieldEmailAddress)

    //Create border line on text password fields.
    self.borderline(textFieldPassword)

} 

func textFieldDidBeginEditing(textField: UITextField)
{
    switch textField.tag
    {

    case 1:

        self.Darkborderline(textFieldEmailAddress)
        break

    case 2:

        self.Darkborderline(textFieldPassword)
        break

    default:
        break
    }
}



func textFieldDidEndEditing(textField: UITextField)
{
    switch textField.tag
    {

    case 1:

        self.borderline(textFieldEmailAddress)
        break

    case 2:

        self.borderline(textFieldPassword)
        break

    default:
        break
    }
}

//浅蓝色文本字段上的边框线。

func borderline(textField : UITextField)
{

    switch textField.tag
    {

    case 1:
            width =  CGFloat(0.40)

            let border = CALayer()
            border.borderColor = UIColor.blueColor().CGColor
            border.frame = CGRect(x: 0, y: textFieldEmailAddress.frame.size.height - width,
                                  width:  textFieldEmailAddress.frame.size.width, height: width)
            border.borderWidth = width
            textFieldEmailAddress.borderStyle = UITextBorderStyle.None
            textFieldEmailAddress.layer.addSublayer(border)
            textFieldEmailAddress.layer.masksToBounds = true

            break

    case 2:

            width =  CGFloat(0.40)

            let border = CALayer()
            border.borderColor = UIColor.blueColor().CGColor
            border.frame = CGRect(x: 0, y: textFieldPassword.frame.size.height - width,
                                  width:  textFieldPassword.frame.size.width, height: width)
            border.borderWidth = width
            textFieldPassword.borderStyle = UITextBorderStyle.None
            textFieldPassword.layer.addSublayer(border)
            textFieldPassword.layer.masksToBounds = true

            break

    default: break

    }
}

//文本字段上的深蓝色边框线。

func Darkborderline(textField : UITextField)
{
    //let border = CALayer()

    switch textField.tag
    {
    case 1:
            width =  CGFloat(0.80)

            let border = CALayer()
            border.borderColor = UIColor.blueColor().CGColor
            border.frame = CGRect(x: 0, y: textFieldEmailAddress.frame.size.height - width,
                                  width:  textFieldEmailAddress.frame.size.width, height: width)
            border.borderWidth = width
            textFieldEmailAddress.borderStyle = UITextBorderStyle.None
            textFieldEmailAddress.layer.addSublayer(border)
            textFieldEmailAddress.layer.masksToBounds = true

        break

    case 2:
            width =  CGFloat(0.80)

            let border = CALayer()
            border.borderColor = UIColor.blueColor().CGColor
            border.frame = CGRect(x: 0, y: textFieldPassword.frame.size.height - width,
                                  width:  textFieldPassword.frame.size.width, height: width)
            border.borderWidth = width
            textFieldPassword.borderStyle = UITextBorderStyle.None
            textFieldPassword.layer.addSublayer(border)
            textFieldPassword.layer.masksToBounds = true

            break

    default: break
    }
}

Answer 1

首先声明一个方法将底部边框设置为字段并使用{"result":[{"key":"value"}]}的委托方法

在UITextFieldDelegate上，首先将这样的细边框指定给两个字段

viewDidLoad

Answer 2

尝试一次。

func textFieldShouldBeginEditing(textField: UITextField) -> Bool
{
    if 1 == textField.tag
    {
    selectedTextField = textFieldEmailAddress
    self.selectedTextField.layer.borderColor = UIColor.blueColor().CGColor
    self.selectedTextField.layer.borderWidth = 0.8
    self.selectedTextField = textField
    self.textFieldPassword.layer.borderColor = UIColor.blueColor().CGColor
    self.textFieldPassword.layer.borderWidth = 0.4
    return true
    }

    else if 2 == textField.tag
    {
        selectedTextField = textFieldPassword
        self.selectedTextField.layer.borderColor = UIColor.blueColor().CGColor
        self.selectedTextField.layer.borderWidth = 0.8
        self.selectedTextField = textField
        self.textFieldEmailAddress.layer.borderColor = UIColor.blueColor().CGColor
        self.textFieldEmailAddress.layer.borderWidth = 0.4
        return true
    }

    else
    {
        return false
    }
}

func textFieldShouldReturn(textField: UITextField) -> Bool
{
    self.selectedTextField.layer.borderColor = UIColor.blueColor().CGColor
    self.selectedTextField.layer.borderWidth = 0.4
    self.selectedTextField = UITextField()
    textField.resignFirstResponder()
    return true   
}

在textFields上创建和删除边框线

2 个答案: