[英]Create space at the beginning of a UITextField
這就是我現在正在使用的:
斯威夫特 4.2
class TextField: UITextField {
let padding = UIEdgeInsets(top: 0, left: 5, bottom: 0, right: 5)
override open func textRect(forBounds bounds: CGRect) -> CGRect {
return bounds.inset(by: padding)
}
override open func placeholderRect(forBounds bounds: CGRect) -> CGRect {
return bounds.inset(by: padding)
}
override open func editingRect(forBounds bounds: CGRect) -> CGRect {
return bounds.inset(by: padding)
}
}
斯威夫特 4
class TextField: UITextField {
let padding = UIEdgeInsets(top: 0, left: 5, bottom: 0, right: 5)
override open func textRect(forBounds bounds: CGRect) -> CGRect {
return UIEdgeInsetsInsetRect(bounds, padding)
}
override open func placeholderRect(forBounds bounds: CGRect) -> CGRect {
return UIEdgeInsetsInsetRect(bounds, padding)
}
override open func editingRect(forBounds bounds: CGRect) -> CGRect {
return UIEdgeInsetsInsetRect(bounds, padding)
}
}
斯威夫特 3:
class TextField: UITextField {
let padding = UIEdgeInsets(top: 0, left: 5, bottom: 0, right: 5)
override func textRect(forBounds bounds: CGRect) -> CGRect {
return UIEdgeInsetsInsetRect(bounds, padding)
}
override func placeholderRect(forBounds bounds: CGRect) -> CGRect {
return UIEdgeInsetsInsetRect(bounds, padding)
}
override func editingRect(forBounds bounds: CGRect) -> CGRect {
return UIEdgeInsetsInsetRect(bounds, padding)
}
}
我從來沒有設置其他填充,但你可以調整。 此類不處理文本字段上的 rightView 和 leftView。 如果您希望正確處理它,您可以使用類似(objc 中的示例,我只需要 rightView:
- (CGRect)textRectForBounds:(CGRect)bounds {
CGRect paddedRect = UIEdgeInsetsInsetRect(bounds, self.insets);
if (self.rightViewMode == UITextFieldViewModeAlways || self.rightViewMode == UITextFieldViewModeUnlessEditing) {
return [self adjustRectWithWidthRightView:paddedRect];
}
return paddedRect;
}
- (CGRect)placeholderRectForBounds:(CGRect)bounds {
CGRect paddedRect = UIEdgeInsetsInsetRect(bounds, self.insets);
if (self.rightViewMode == UITextFieldViewModeAlways || self.rightViewMode == UITextFieldViewModeUnlessEditing) {
return [self adjustRectWithWidthRightView:paddedRect];
}
return paddedRect;
}
- (CGRect)editingRectForBounds:(CGRect)bounds {
CGRect paddedRect = UIEdgeInsetsInsetRect(bounds, self.insets);
if (self.rightViewMode == UITextFieldViewModeAlways || self.rightViewMode == UITextFieldViewModeWhileEditing) {
return [self adjustRectWithWidthRightView:paddedRect];
}
return paddedRect;
}
- (CGRect)adjustRectWithWidthRightView:(CGRect)bounds {
CGRect paddedRect = bounds;
paddedRect.size.width -= CGRectGetWidth(self.rightView.frame);
return paddedRect;
}
這是一個很好的擴展案例。 通過使用擴展,無需繼承 UITextField 並且新功能將可用於您應用程序中的任何 UITextField:
extension UITextField {
func setLeftPaddingPoints(_ amount:CGFloat){
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: amount, height: self.frame.size.height))
self.leftView = paddingView
self.leftViewMode = .always
}
func setRightPaddingPoints(_ amount:CGFloat) {
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: amount, height: self.frame.size.height))
self.rightView = paddingView
self.rightViewMode = .always
}
}
當我需要在應用程序的任何位置設置文本字段的填充時,我只需執行以下操作:
textField.setLeftPaddingPoints(10)
textField.setRightPaddingPoints(10)
使用 Swift 擴展,該功能直接添加到 UITextField 而無需子類化。
希望這可以幫助!
X, Y , Z 是您想要的值
textField.layer.sublayerTransform = CATransform3DMakeTranslation(x, y, z)
這樣的邊距可以通過將leftView
/ rightView
設置為UITextField
來實現。
為 Swift 4 更新
// Create a padding view for padding on left
textField.leftView = UIView(frame: CGRect(x: 0, y: 0, width: 15, height: textField.frame.height))
textField.leftViewMode = .always
// Create a padding view for padding on right
textField.rightView = UIView(frame: CGRect(x: 0, y: 0, width: 15, height: textField.frame.height))
textField.rightViewMode = .always
我剛剛在文本字段的左側和右側添加/放置了一個UIView
。 所以現在打字將在視圖之后開始。
謝謝
希望這有幫助...
斯威夫特 4,Xcode 9
我喜歡Pheepster 的回答,但是我們如何從擴展中完成這一切,而不需要 VC 代碼或任何子類:
import UIKit
@IBDesignable
extension UITextField {
@IBInspectable var paddingLeftCustom: CGFloat {
get {
return leftView!.frame.size.width
}
set {
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: newValue, height: frame.size.height))
leftView = paddingView
leftViewMode = .always
}
}
@IBInspectable var paddingRightCustom: CGFloat {
get {
return rightView!.frame.size.width
}
set {
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: newValue, height: frame.size.height))
rightView = paddingView
rightViewMode = .always
}
}
}
使用我的擴展 Swift 5 測試:
extension UITextField {
enum PaddingSpace {
case left(CGFloat)
case right(CGFloat)
case equalSpacing(CGFloat)
}
func addPadding(padding: PaddingSpace) {
self.leftViewMode = .always
self.layer.masksToBounds = true
switch padding {
case .left(let spacing):
let leftPaddingView = UIView(frame: CGRect(x: 0, y: 0, width: spacing, height: self.frame.height))
self.leftView = leftPaddingView
self.leftViewMode = .always
case .right(let spacing):
let rightPaddingView = UIView(frame: CGRect(x: 0, y: 0, width: spacing, height: self.frame.height))
self.rightView = rightPaddingView
self.rightViewMode = .always
case .equalSpacing(let spacing):
let equalPaddingView = UIView(frame: CGRect(x: 0, y: 0, width: spacing, height: self.frame.height))
// left
self.leftView = equalPaddingView
self.leftViewMode = .always
// right
self.rightView = equalPaddingView
self.rightViewMode = .always
}
}
}
如何使用
// equal padding
yourTextField.addPadding(padding: .equalSpacing(10))
// padding right
yourTextField.addPadding(padding: .right(10))
// padding left
yourTextField.addPadding(padding: .left(10))
在Swift 4.2 和 Xcode 10中
最初我的文本字段是這樣的。
在左側添加填充后,我的文本字段是......
//Code for left padding
textFieldName.leftView = UIView(frame: CGRect(x: 0, y: 0, width: 10, height: textFieldName.frame.height))
textFieldName.leftViewMode = .always
像這樣我們也可以創建右側。(textFieldName.rightViewMode = .always)
如果您想要 SharedInstance 類型代碼(使用每個商品編寫一次),請參見下面的代碼。
//This is my shared class
import UIKit
class SharedClass: NSObject {
static let sharedInstance = SharedClass()
//This is my padding function.
func textFieldLeftPadding(textFieldName: UITextField) {
// Create a padding view
textFieldName.leftView = UIView(frame: CGRect(x: 0, y: 0, width: 3, height: textFieldName.frame.height))
textFieldName.leftViewMode = .always//For left side padding
textFieldName.rightViewMode = .always//For right side padding
}
private override init() {
}
}
現在像這樣調用這個函數。
//This single line is enough
SharedClass.sharedInstance.textFieldLeftPadding(textFieldName:yourTF)
簡單的 swift 3 解決方案 - 將代碼添加到 viewDidLoad:
let indentView = UIView(frame: CGRect(x: 0, y: 0, width: 10, height: 20))
textField.leftView = indentView
textField.leftViewMode = .always
不需要長得離譜的代碼
在 Swift 5 中為 UITextField 創建填充視圖
func txtPaddingVw(txt:UITextField) {
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: 5, height: 5))
txt.leftViewMode = .always
txt.leftView = paddingView
}
這是更新到 Swift 4.2 的Haagenti 的答案:
class PaddedTextField: UITextField {
func getPadding(plusExtraFor clearButtonMode: ViewMode) -> UIEdgeInsets {
var padding = UIEdgeInsets(top: 11, left: 16, bottom: 11, right: 16)
// Add additional padding on the right side when showing the clear button
if self.clearButtonMode == .always || self.clearButtonMode == clearButtonMode {
padding.right = 28
}
return padding
}
override open func textRect(forBounds bounds: CGRect) -> CGRect {
let padding = getPadding(plusExtraFor: .unlessEditing)
return bounds.inset(by: padding)
}
override open func placeholderRect(forBounds bounds: CGRect) -> CGRect {
let padding = getPadding(plusExtraFor: .unlessEditing)
return bounds.inset(by: padding)
}
override open func editingRect(forBounds bounds: CGRect) -> CGRect {
let padding = getPadding(plusExtraFor: .whileEditing)
return bounds.inset(by: padding)
}
}
參考:升級到 Swift 4.2 。
編輯:帳戶清除按鈕。
這一行代碼救了我:
textField.Layer.SublayerTransform = CATransform3D.MakeTranslation(5, 0, 0);
textField.layer.sublayerTransform = CATransform3DMakeTranslation(5, 0, 0);
子類化 UITextField 是要走的路。 打開一個游樂場並添加以下代碼:
class MyTextField : UITextField {
var leftTextMargin : CGFloat = 0.0
override func textRectForBounds(bounds: CGRect) -> CGRect {
var newBounds = bounds
newBounds.origin.x += leftTextMargin
return newBounds
}
override func editingRectForBounds(bounds: CGRect) -> CGRect {
var newBounds = bounds
newBounds.origin.x += leftTextMargin
return newBounds
}
}
let tf = MyTextField(frame: CGRect(x: 0, y: 0, width: 100, height: 44))
tf.text = "HELLO"
tf.leftTextMargin = 25
tf.setNeedsLayout()
tf.layoutIfNeeded()
簡單的方法:通過擴展 UITextField 來做到這一點
extension UITextField {
func setPadding(left: CGFloat? = nil, right: CGFloat? = nil){
if let left = left {
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: left, height: self.frame.size.height))
self.leftView = paddingView
self.leftViewMode = .always
}
if let right = right {
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: right, height: self.frame.size.height))
self.rightView = paddingView
self.rightViewMode = .always
}
}
}
然后您可以通過這種方式將填充設置為任何邊緣:
textField.setPadding(left: 5, right: 5)
創建具有所需填充空間的 UIView 並將其添加到 textfield.leftView 成員並將 textfield.leftViewMode 成員設置為 UITextFieldViewMode.Always
// For example if you have textfield named title
@IBOutlet weak var title: UITextField!
// Create UIView
let paddingView : UIView = UIView(frame: CGRectMake(0, 0, 5, 20))
//Change your required space instaed of 5.
title.leftView = paddingView
title.leftViewMode = UITextFieldViewMode.Always
將此代碼放入您的viewDidLoad()
:
textField.delegate = self
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: 20, height: self.textField.frame.height))
textField.leftView = paddingView
textField.leftViewMode = UITextFieldViewMode.always
這個對我有用 :)
在大多數情況下,您可以將其視為技術性問題,但所有示例都沒有正確區分frame
和bounds
。 在子視圖中引用視圖的高度時,請使用bounds
- 否則一旦將某些變換應用於父視圖,您可能會遇到麻煩。
請參閱下面的更新代碼(基於 Pheepster 的回答)。
extension UITextField {
func setLeftPadding(_ amount: CGFloat = 10) {
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: amount, height: self.bounds.size.height))
self.leftView = paddingView
self.leftViewMode = .always
}
func setRightPadding(_ amount: CGFloat = 10) {
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: amount, height: self.bounds.size.height))
self.rightView = paddingView
self.rightViewMode = .always
}
}
稻草人在 Swift 3 中的回答
let padding = UIEdgeInsets(top: 0, left: 5, bottom: 0, right: 5);
override func textRect(forBounds bounds: CGRect) -> CGRect {
return UIEdgeInsetsInsetRect(bounds, padding)
}
override func placeholderRect(forBounds bounds: CGRect) -> CGRect {
return UIEdgeInsetsInsetRect(bounds, padding)
}
override func editingRect(forBounds bounds: CGRect) -> CGRect {
return UIEdgeInsetsInsetRect(bounds, padding)
}
在 Swift 3 中。您可以使用自定義 UITextField 並在其構造函數中設置縮進。 不需要在控制器中進行額外聲明。
class CustomTextField : UITextField {
private let indentView = UIView(frame: CGRect(x: 0, y:0, width: 10, height: 10))
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
self.leftView = indentView
self.leftViewMode = .always
}
}
我更喜歡使用IBDesignable
類和IBInspectable
屬性來允許我通過 Xcode 故事板設置填充並使其可重用。 我還更新了代碼以在 Swift 4 中工作。
import Foundation
import UIKit
@IBDesignable
class PaddableTextField: UITextField {
var padding = UIEdgeInsets(top: 0.0, left: 0.0, bottom: 0.0, right: 0.0)
@IBInspectable var left: CGFloat = 0 {
didSet {
adjustPadding()
}
}
@IBInspectable var right: CGFloat = 0 {
didSet {
adjustPadding()
}
}
@IBInspectable var top: CGFloat = 0 {
didSet {
adjustPadding()
}
}
@IBInspectable var bottom: CGFloat = 0 {
didSet {
adjustPadding()
}
}
func adjustPadding() {
padding = UIEdgeInsets(top: top, left: left, bottom: bottom, right: right)
}
override func prepareForInterfaceBuilder() {
super.prepareForInterfaceBuilder()
}
override func textRect(forBounds bounds: CGRect) -> CGRect {
return bounds.inset(by: UIEdgeInsets(top: top, left: left, bottom: bottom, right: right))
}
override func placeholderRect(forBounds bounds: CGRect) -> CGRect {
return bounds.inset(by: UIEdgeInsets(top: top, left: left, bottom: bottom, right: right))
}
override func editingRect(forBounds bounds: CGRect) -> CGRect {
return bounds.inset(by: UIEdgeInsets(top: top, left: left, bottom: bottom, right: right))
}
}
* 在 Swift 5 中擴展 UITextField *
import UIKit
@IBDesignable
extension UITextField {
@IBInspectable var paddingLeftCustom: CGFloat {
get {
return leftView!.frame.size.width
}
set {
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: newValue, height: frame.size.height))
leftView = paddingView
leftViewMode = .always
}
}
@IBInspectable var paddingRightCustom: CGFloat {
get {
return rightView!.frame.size.width
}
set {
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: newValue, height: frame.size.height))
rightView = paddingView
rightViewMode = .always
}
}
}
//MARK:- Use this class for different type of Roles
import UIKit
class HelperExtensionViewController: UIViewController {
}
//MARK:- Extension
extension UIImageView
{
func setImageCornerRadius()
{
self.layer.cornerRadius = self.frame.size.height/2
self.clipsToBounds = true
}
func setImageCornerRadiusInPoints(getValue:CGFloat)
{
self.layer.cornerRadius = getValue
self.clipsToBounds = true
}
}
extension UIButton
{
func setButtonCornerRadiusOnly()
{
self.layer.cornerRadius = self.frame.size.height/2
self.clipsToBounds = true
}
func setBtnCornerRadiusInPoints(getValue:CGFloat)
{
self.layer.cornerRadius = getValue
self.clipsToBounds = true
}
}
extension UITextField
{
func setTextFieldCornerRadiusWithBorder()
{
self.layer.cornerRadius = self.frame.size.height/2
self.layer.borderColor = UIColor.darkGray.cgColor
self.backgroundColor = UIColor.clear
self.layer.borderWidth = 0.5
self.clipsToBounds = true
}
func setLeftPaddingPoints(_ amount:CGFloat){
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: amount, height: self.frame.size.height))
self.leftView = paddingView
self.leftViewMode = .always
}
func setRightPaddingPoints(_ amount:CGFloat) {
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: amount, height: self.frame.size.height))
self.rightView = paddingView
self.rightViewMode = .always
}
}
extension UIView
{
func setCornerRadius()
{
self.layer.cornerRadius = self.frame.size.height/2
self.clipsToBounds = true
}
// OUTPUT 1
func setViewCornerRadiusWithBorder()
{
self.layer.cornerRadius = self.frame.size.height/2
self.layer.borderColor = UIColor.init(red: 95.0/255.0, green: 229.0/255.0, blue: 206.0/255.0, alpha: 1.0).cgColor
self.backgroundColor = UIColor.clear
self.layer.borderWidth = 1.0
self.clipsToBounds = true
}
func layoutSubviews(myView:UIView)
{
let shadowPath = UIBezierPath(rect: myView.bounds)
myView.layer.masksToBounds = false
myView.layer.shadowColor = UIColor.lightGray.cgColor
myView.layer.shadowOffset = CGSize(width: -1.0, height: 2.0)
myView.layer.shadowOpacity = 0.5
myView.layer.shadowPath = shadowPath.cgPath
}
func layoutSubviews2(myView:UIView)
{
let shadowPath = UIBezierPath(rect: myView.bounds)
myView.clipsToBounds = true
myView.layer.masksToBounds = false
myView.layer.shadowColor = UIColor.black.cgColor
myView.layer.shadowOffset = CGSize(width: 0.0, height: 1.0)
myView.layer.shadowOpacity = 0.2
myView.layer.shadowPath = shadowPath.cgPath
}
func setViewCornerRadiusInPoints(getValue:CGFloat)
{
self.layer.cornerRadius = getValue
self.clipsToBounds = true
}
func dropShadow(scale: Bool = true) {
layer.masksToBounds = false
layer.shadowColor = UIColor.black.cgColor
layer.shadowOpacity = 0.5
layer.shadowOffset = CGSize(width: -1, height: 1)
layer.shadowRadius = 1
layer.shadowPath = UIBezierPath(rect: bounds).cgPath
layer.shouldRasterize = true
layer.rasterizationScale = scale ? UIScreen.main.scale : 1
}
// OUTPUT 2
func dropShadow(color: UIColor, opacity: Float = 0.5, offSet: CGSize, radius: CGFloat = 1, scale: Bool = true) {
layer.masksToBounds = false
layer.shadowColor = color.cgColor
layer.shadowOpacity = opacity
layer.shadowOffset = offSet
layer.shadowRadius = radius
layer.shadowPath = UIBezierPath(rect: self.bounds).cgPath
layer.shouldRasterize = true
layer.rasterizationScale = scale ? UIScreen.main.scale : 1
}
func setGradientBackground(myview:UIView) {
let colorTop = UIColor(red: 100.0/255.0, green: 227.0/255.0, blue: 237.0/255.0, alpha: 1.0).cgColor
let colorBottom = UIColor(red: 141.0/255.0, green: 109.0/255.0, blue: 164.0/255.0, alpha: 1.0).cgColor
let gradientLayer = CAGradientLayer()
gradientLayer.colors = [colorTop, colorBottom]
gradientLayer.locations = [1.0, 1.0]
gradientLayer.frame = myview.bounds
myview.layer.insertSublayer(gradientLayer, at:0)
}
}
擴展 leftView 和 Swift5+ 的原始答案
class TextField: UITextField {
let padding = UIEdgeInsets(top: 0, left: 5, bottom: 0, right: 5)
override open func textRect(forBounds bounds: CGRect) -> CGRect {
let paddedRect = bounds.inset(by: self.padding)
if (self.leftViewMode == .always || self.leftViewMode == .unlessEditing) {
return self.adjustRectOriginForLeftView(bounds: paddedRect)
}
return paddedRect
}
override open func placeholderRect(forBounds bounds: CGRect) -> CGRect {
let paddedRect = bounds.inset(by: self.padding)
if (self.leftViewMode == .always || self.leftViewMode == .unlessEditing) {
return self.adjustRectOriginForLeftView(bounds: paddedRect)
}
return paddedRect;
}
override open func editingRect(forBounds bounds: CGRect) -> CGRect {
let paddedRect = bounds.inset(by: self.padding);
if (self.leftViewMode == .always || self.leftViewMode == .unlessEditing) {
return self.adjustRectOriginForLeftView(bounds: paddedRect)
}
return paddedRect;
}
func adjustRectOriginForLeftView(bounds : CGRect) -> CGRect{
var paddedRect = bounds;
paddedRect.origin.x += self.leftView!.frame.width
return paddedRect
}
}
textfield.layer.sublayerTransform = CATransform3DMakeTranslation(10, 0, 0)
在 UITextField 的開頭創建空間。
在Swift 5+和Xcode 12中。
textFieldName.setLeftPaddingPoints(CGFloat(10))
textFieldName.setRightPaddingPoints(CGFloat(10)
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