Swift & UILabel :如何以编程方式在Swift中添加填充和边距？
Swift & UILabel :如何以编程方式在Swift中添加填充和边距？
提问于 2021-05-28 07:07:13
我使用UILabel以编程方式创建了一个灰色背景的文本。现在我想在这个段落/文本中添加padding。此外，如果您能向我展示如何将margin添加到我的UILabel中，那就太好了。
import UIKit
final class SignUpViewController: UIViewController {
public let identifier = "Sign Up"
private let logoImage : UIImageView = {
let imageView = UIImageView()
imageView.layer.masksToBounds = true
imageView.contentMode = .scaleAspectFit
imageView.image = UIImage(named: "MyLogoWithTitle")
imageView.clipsToBounds = true
return imageView
}()
private let instructionText : UILabel = {
let label = UILabel()
label.text = "Please read terms and conditions below carefully before proceeding with the registration."
label.backgroundColor = UIColor().colorFromHex(hex: "#2C333C", opacity: 0.4)
label.numberOfLines = 0
label.tintColor = .white
return label
}()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
view.addSubview(logoImage)
view.addSubview(instructionText)
view.backgroundColor = UIColor().colorFromHex(hex: "#141920", opacity: 1.0)
}
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
logoImage.frame = CGRect(x: 0,
y: 0,
width: 140,
height: 60)
logoImage.center = CGPoint(x: view.center.x, y: view.height/5)
instructionText.frame = CGRect(
x: 5,
y: 5 + logoImage.bottom,
width: view.width - 20,
height: 50)
.integral
instructionText.layer.cornerRadius = 10
}
}请注意，我为UIColor创建了一个扩展，以便以这种方式输入十六进制颜色- UIColor().colorFromHex(hex: "#2C333C", opacity: 0.4)。
我期待着您的回音。谢谢。
回答 3
Stack Overflow用户
回答已采纳
发布于 2021-05-28 09:26:06
您可以将此UILabel插入容器(任意UIView)并在其中设置其位置。
但最简单的诀窍是使用UIButton而不是UILabel。您可以将UIEdgeInsets配置为填充。
这样，UIButton就不会充当按钮，只需设置button.isUserInteractionEnabled = false。
默认情况下，按钮中的文本放在中心，但是它的位置很容易用contentHorizontalAlignment和contentVerticalAlignment更改。
作为奖励，您可以在文本附近添加图标。:)
UPD。
你能给我举个简单的例子吗？我试过了，但没有达到我所期望的结果。-普纳达·拉尼
let buttonUsedAsLabel = UIButton()
// Your question was about padding
// It's it!
buttonUsedAsLabel.titleEdgeInsets = UIEdgeInsets(top: 5, left: 20, bottom: 5, right: 20)
// Make it not user interactable as UILabel is
buttonUsedAsLabel.isUserInteractionEnabled = false
// set any other properties
buttonUsedAsLabel.setTitleColor(.white, for: .normal)
buttonUsedAsLabel.contentVerticalAlignment = .top
buttonUsedAsLabel.contentHorizontalAlignment = .left
// Set title propeties AFTER it was created with text because it's nullable
// You can use attributed title also
// Never use any (button.titleLabel) before its creation
// for example: (button.titleLabel?.text = "zzz") do nothing here
buttonUsedAsLabel.setTitle("This is the text", for: .normal)
buttonUsedAsLabel.titleLabel?.font = .systemFont(ofSize: 20, weight: .medium)
buttonUsedAsLabel.titleLabel?.numberOfLines = 0
buttonUsedAsLabel.titleLabel?.lineBreakMode = .byWordWrapping
// and so on
// ...
// This is the triсk :)当然，如果愿意的话，你可以用一个故事板来做。
Stack Overflow用户
发布于 2021-07-15 05:07:17
1.添加这个类
PaddingLabel.swift
import UIKit
class PaddingLabel: UILabel {
var edgeInset: UIEdgeInsets = .zero
override func drawText(in rect: CGRect) {
let insets = UIEdgeInsets.init(top: edgeInset.top, left: edgeInset.left, bottom: edgeInset.bottom, right: edgeInset.right)
super.drawText(in: rect.inset(by: insets))
}
override var intrinsicContentSize: CGSize {
let size = super.intrinsicContentSize
return CGSize(width: size.width + edgeInset.left + edgeInset.right, height: size.height + edgeInset.top + edgeInset.bottom)
}
}将此代码添加到您的ViewController 中
let label = PaddingLabel()
override func viewDidLoad() {
super.viewDidLoad()
label.backgroundColor = UIColor().colorFromHex(hex: "#2C333C", opacity: 0.4)
//Setting the padding label
label.edgeInset = UIEdgeInsets(top: 5, left: 10, bottom: 5, right: 10)
}下面链接的答案是，我基于故事板编写了相同的内容。
Stack Overflow用户
发布于 2021-08-12 08:34:15
我用textfield。设置文本字段中的填充和文本。也不允许编辑。
extension UITextField {
func addLeftPadding() {
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: 12, height: self.frame.height))
self.leftView = paddingView
self.leftViewMode = ViewMode.always
}
}//ViewController
@IBOutlet weak var myTextField: UITextField!
override func viewDidLoad() {
super.viewDidLoad()
myTextField.addLeftPadding()
myTextField.isUserInteractionEnabled = false
myTextField.text = "your label text"
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/67734304
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