Question

我可以使用右视图向UITextField右侧的文本字段添加按钮，但文本会在按钮上重叠。以下是右视图按钮的代码

        UIView.commitAnimations()
        var btnColor = UIButton(type: .Custom)
        btnColor.addTarget(self, action: #selector(self.openEmoji), forControlEvents: .TouchUpInside)
        btnColor.frame = CGRect(x: CGFloat(textField.frame.size.width - 25), y: CGFloat(5), width: CGFloat(25), height: CGFloat(25))
        btnColor.setBackgroundImage(UIImage(named: "send.png"), forState: .Normal)
        textField.addSubview(btnColor)

请让我知道如何从正确的视图中填写文本。

Answer 1

使用UITextField的 rightView 属性。基本上，有两个属性（相应的这一个和leftView）允许您在UITextField中放置自定义视图/控件。您可以通过 rightViewMode / leftViewMode 属性控制是否显示这些视图：

textField.rightView = btnColor
textField.rightViewMode = .unlessEditing

例如

let button = UIButton(type: .custom)
button.setImage(UIImage(named: "send.png"), for: .normal)
button.imageEdgeInsets = UIEdgeInsetsMake(0, -16, 0, 0)
 button.frame = CGRect(x: CGFloat(txt.frame.size.width - 25), y: CGFloat(5), width: CGFloat(25), height: CGFloat(25))
button.addTarget(self, action: #selector(self.refresh), for: .touchUpInside)
textField.rightView = button
textField.rightViewMode = .always

并将操作称为

@IBAction func refresh(_ sender: Any) {
}

Answer 2

创建UITextField扩展并在其中添加以下方法，您可以根据需要更改UIButton代码。

func setRightViewIcon(icon: UIImage) {
    let btnView = UIButton(frame: CGRect(x: 0, y: 0, width: ((self.frame.height) * 0.70), height: ((self.frame.height) * 0.70)))
    btnView.setImage(icon, for: .normal)
    btnView.imageEdgeInsets = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 3)
    self.rightViewMode = .always
    self.rightView = btnView
}

Answer 3

您可以在文本字段的右视图中指定按钮

var btnColor = UIButton(type: .Custom)
            btnColor.addTarget(self, action: #selector(self.openEmoji), forControlEvents: .TouchUpInside)
            btnColor.frame = CGRect(x: CGFloat(textField.frame.size.width - 25), y: CGFloat(5), width: CGFloat(25), height: CGFloat(25))
            btnColor.setBackgroundImage(UIImage(named: "send.png"), forState: .Normal)
            textField.rightView = btnColor

Answer 4

internal var btnDropDown: UIButton {
    let size: CGFloat = 25.0
    let button = UIButton(type: .custom)
    button.setImage(#imageLiteral(resourceName: "DropDownImage"), for: .normal)
    button.imageEdgeInsets = UIEdgeInsetsMake(0, -(size/2.0), 0, 0)
    button.frame = CGRect(x: self.frame.size.width - size, y: 0.0, width: size, height: size)
    return button
}

我就像这样使用：

override func awakeFromNib() {
    super.awakeFromNib()   
    textField.rightView = self.btnDropDown
    textField.rightViewMode = .always
}

Answer 5

正确回答Swift3 +

如果您只是覆盖方法，则文本可能会与右视图重叠。此代码完全解决了这个问题。

你是UITextField的子类：

//...

private func setInsets(forBounds bounds: CGRect) -> CGRect {

    var totalInsets = insets //property in you subClass

    if let leftView = leftView  { totalInsets.left += leftView.frame.origin.x }
    if let rightView = rightView { totalInsets.right += rightView.bounds.size.width }

    return UIEdgeInsetsInsetRect(bounds, totalInsets)
}

override func textRect(forBounds bounds: CGRect) -> CGRect {
    return setInsets(forBounds: bounds)
}

override func placeholderRect(forBounds bounds: CGRect) -> CGRect {
    return setInsets(forBounds: bounds)
}

override func editingRect(forBounds bounds: CGRect) -> CGRect {
    return setInsets(forBounds: bounds)
}

override func rightViewRect(forBounds bounds: CGRect) -> CGRect {

    var rect = super.rightViewRect(forBounds: bounds)
    rect.origin.x -= insets.right

    return rect
}

override func leftViewRect(forBounds bounds: CGRect) -> CGRect {

    var rect = super.leftViewRect(forBounds: bounds)
    rect.origin.x += insets.left

    return rect
}

Answer 6

对于Swift4

func setupUI() {
   let imgSearch = UIImageView();
   let imgSearch = UIImage(named: "search");

   // set frame on image before adding it to the uitextfield
   imgSearch.image = imagePassword;
   imgSearch.frame = CGRect(x: txtSearchField.frame.size.width - 40 , y: 5, width: 22, height: 22)
   txtSearchField.rightView = imgSearch
   txtSearchField.rightViewMode = .always
}

像这样的调用功能

 // MARK: View lifecycle
    override func viewDidLoad() {
        super.viewDidLoad()
        self.setupUI()
    }

Answer 7

您可以实现如下所示的效果：

@IBOutlet weak var textField: UITextField!

var textFieldBtn: UIButton {
    let button = UIButton(type: .custom)
    button.setImage(UIImage(named: "image.png"), for: .normal)
    button.imageEdgeInsets = UIEdgeInsetsMake(0, 0, 0, 0)
    button.frame = CGRect(x: CGFloat(textField.frame.size.width - 40), y: CGFloat(5), width: CGFloat(40), height: CGFloat(30))
    button.backgroundColor = UIColor.darkGray
    button.addTarget(self, action: #selector(self.refreshContent), for: .touchUpInside)

    return button
}

func refreshContent() {

    // Add your code here to handle button.
}

添加到textField。

textField.rightView = textFieldBtn
textField.rightViewMode = .always

在UItextfield的右视图上添加一个按钮，使文本不应与按钮重叠

7 个答案: