如何在迅捷(iOS)中创建单选按钮和复选框？

For Radio Buttons and CheckBoxes there is nothing that comes built in.

You can implement Checkboxes easily yourself. You can set an uncheckedImage for your button for UIControlStateNormal and a checkedImage for your UIControlStateSelected. Now on tap, the button will change its image and alternate between checked and unchecked image.

To use radio buttons, you have to keep an Array for all the buttons that you want to behave as radio buttons. Whenever a button is pressed, you need to uncheck all other buttons in the array.

For radio buttons you can use SSRadioButtonsController You can create a controller object and add buttons array to it like

var radioButtonController = SSRadioButtonsController()
radioButtonController.setButtonsArray([button1!,button2!,button3!])

The main principle is something like this here.

Check out DLRadioButton. You can add and customize radio buttons directly from the Interface Builder. Also works with Swift perfectly.

Update: version 1.3.2 added square buttons, also improved performance.

Update: version 1.4.4 added multiple selection option, can be used as checkbox as well.

Update: version 1.4.7 added RTL language support.

Checkbox

You can create your own CheckBox control extending UIButton with Swift:

import UIKit


class CheckBox: UIButton {
// Images
let checkedImage = UIImage(named: "ic_check_box")! as UIImage
let uncheckedImage = UIImage(named: "ic_check_box_outline_blank")! as UIImage
    

// Bool property
var isChecked: Bool = false {
didSet {
if isChecked == true {
self.setImage(checkedImage, for: UIControl.State.normal)
} else {
self.setImage(uncheckedImage, for: UIControl.State.normal)
}
}
}
        

override func awakeFromNib() {
self.addTarget(self, action:#selector(buttonClicked(sender:)), for: UIControl.Event.touchUpInside)
self.isChecked = false
}
        

@objc func buttonClicked(sender: UIButton) {
if sender == self {
isChecked = !isChecked
}
}
}

And then add it to your views with Interface Builder:

Radio Buttons

Radio Buttons can be solved in a similar way.

For example, the classic gender selection Woman - Man:

import UIKit


class RadioButton: UIButton {
var alternateButton:Array<RadioButton>?
    

override func awakeFromNib() {
self.layer.cornerRadius = 5
self.layer.borderWidth = 2.0
self.layer.masksToBounds = true
}
    

func unselectAlternateButtons() {
if alternateButton != nil {
self.isSelected = true
            

for aButton:RadioButton in alternateButton! {
aButton.isSelected = false
}
} else {
toggleButton()
}
}
    

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
unselectAlternateButtons()
super.touchesBegan(touches, with: event)
}
    

func toggleButton() {
self.isSelected = !isSelected
}
    

override var isSelected: Bool {
didSet {
if isSelected {
self.layer.borderColor = Color.turquoise.cgColor
} else {
self.layer.borderColor = Color.grey_99.cgColor
}
}
}
}

You can init your radio buttons like this:

    override func awakeFromNib() {
self.view.layoutIfNeeded()
        

womanRadioButton.selected = true
manRadioButton.selected = false
}
    

override func viewDidLoad() {
womanRadioButton?.alternateButton = [manRadioButton!]
manRadioButton?.alternateButton = [womanRadioButton!]
}

Hope it helps.

Steps to Create Radio Button

BasicStep : take Two Button. set image for both like selected and unselected. than add action to both button. now start code

1)Create variable :

var btnTag    : Int = 0

2)In ViewDidLoad Define :

 btnTag = btnSelected.tag

3)Now In Selected Tap Action :

 @IBAction func btnSelectedTapped(sender: AnyObject) {
btnTag = 1
if btnTag == 1 {
btnSelected.setImage(UIImage(named: "icon_radioSelected"), forState: .Normal)
btnUnSelected.setImage(UIImage(named: "icon_radioUnSelected"), forState: .Normal)
btnTag = 0
}
}

4)Do code for UnCheck Button

 @IBAction func btnUnSelectedTapped(sender: AnyObject) {
btnTag = 1
if btnTag == 1 {
btnUnSelected.setImage(UIImage(named: "icon_radioSelected"), forState: .Normal)
btnSelected.setImage(UIImage(named: "icon_radioUnSelected"), forState: .Normal)
btnTag = 0
}
}

Radio Button is Ready for you

A very simple checkbox control.

 @IBAction func btn_box(sender: UIButton) {
if (btn_box.selected == true)
{
btn_box.setBackgroundImage(UIImage(named: "box"), forState: UIControlState.Normal)


btn_box.selected = false;
}
else
{
btn_box.setBackgroundImage(UIImage(named: "checkBox"), forState: UIControlState.Normal)


btn_box.selected = true;
}
}

There's a really great library out there you can use for this (you can actually use this in place of UISwitch): https://github.com/Boris-Em/BEMCheckBox

Setup is easy:

BEMCheckBox *myCheckBox = [[BEMCheckBox alloc] initWithFrame:CGRectMake(0, 0, 50, 50)];
[self.view addSubview:myCheckBox];

It provides for circle and square type checkboxes

And it also does animations:

shorter ios swift 4 version:

@IBAction func checkBoxBtnTapped(_ sender: UIButton) {
if checkBoxBtn.isSelected {
checkBoxBtn.setBackgroundImage(#imageLiteral(resourceName: "ic_signup_unchecked"), for: .normal)
} else {
checkBoxBtn.setBackgroundImage(#imageLiteral(resourceName: "ic_signup_checked"), for:.normal)
}
checkBoxBtn.isSelected = !checkBoxBtn.isSelected
}

You can simply subclass UIButton and write your own drawing code to suit your needs. I implemented a radio button like that of android using the following code. It can be used in storyboard as well.See example in Github repo

import UIKit


@IBDesignable
class SPRadioButton: UIButton {


@IBInspectable
var gap:CGFloat = 8 {
didSet {
self.setNeedsDisplay()
}
}


@IBInspectable
var btnColor: UIColor = UIColor.green{
didSet{
self.setNeedsDisplay()
}
}


@IBInspectable
var isOn: Bool = true{
didSet{
self.setNeedsDisplay()
}
}


override func draw(_ rect: CGRect) {
self.contentMode = .scaleAspectFill
drawCircles(rect: rect)
}




//MARK:- Draw inner and outer circles
func drawCircles(rect: CGRect){
var path = UIBezierPath()
path = UIBezierPath(ovalIn: CGRect(x: 0, y: 0, width: rect.width, height: rect.height))


let circleLayer = CAShapeLayer()
circleLayer.path = path.cgPath
circleLayer.lineWidth = 3
circleLayer.strokeColor = btnColor.cgColor
circleLayer.fillColor = UIColor.white.cgColor
layer.addSublayer(circleLayer)


if isOn {
let innerCircleLayer = CAShapeLayer()
let rectForInnerCircle = CGRect(x: gap, y: gap, width: rect.width - 2 * gap, height: rect.height - 2 * gap)
innerCircleLayer.path = UIBezierPath(ovalIn: rectForInnerCircle).cgPath
innerCircleLayer.fillColor = btnColor.cgColor
layer.addSublayer(innerCircleLayer)
}
self.layer.shouldRasterize =  true
self.layer.rasterizationScale = UIScreen.main.nativeScale
}


/*
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
isOn = !isOn
self.setNeedsDisplay()
}
*/


override func awakeFromNib() {
super.awakeFromNib()
addTarget(self, action: #selector(buttonClicked(sender:)), for: UIControl.Event.touchUpInside)
isOn = false
}


@objc func buttonClicked(sender: UIButton) {
if sender == self {
isOn = !isOn
setNeedsDisplay()
}
}
}

For a checkbox, you don't need to subclass the UIButton. It already has the isSelected property to handle this.

checkbox = UIButton.init(type: .custom)
checkbox.setImage(UIImage.init(named: "iconCheckboxOutlined"), for: .normal)
checkbox.setImage(UIImage.init(named: "iconCheckboxFilled"), for: .selected)
checkbox.addTarget(self, action: #selector(self.toggleCheckboxSelection), for: .touchUpInside)

Then in the action method toggle it's isSelected state.

@objc func toggleCheckboxSelection() {
checkbox.isSelected = !checkbox.isSelected
}

1. Create 2 buttons one as "YES" and another as "NO".
2. Create a BOOL property Ex: isNRICitizen = false
3. Give same button connection to both the buttons and set a tag (Ex: Yes button - tag 10 and No button -tag 20)

@IBAction func btnAction(_ sender:UIButton) {


isNRICitizen = sender.tag == 10 ? true : false
isNRICitizen ? self.nriCitizenBtnYes.setImage(#imageLiteral(resourceName: "radioChecked"), for: .normal) : self.nriCitizenBtnYes.setImage(#imageLiteral(resourceName: "radioUnchecked"), for: .normal)
isNRICitizen ? self.nriCitizenBtnNo.setImage(#imageLiteral(resourceName: "radioUnchecked"), for: .normal) : self.nriCitizenBtnNo.setImage(#imageLiteral(resourceName: "radioChecked"), for: .normal)
}

For checkboxes there is actually a built-in solution in the form of UITableViewCell accessories. You can set up your form as a UITableView in which each cell as a selectable option and use accessoryType to set a check mark for selected items.

Here is a pseudo-code example:

    let items = [SelectableItem]


func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {




// Get the item for the current row
let item = self.items[indexPath.row]


// ...dequeue and set up the `cell` as you wish...


// Use accessoryType property to mark the row as checked or not...
cell.accessoryType = item.selected ? .checkmark : .none
}


func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {


// Unselect row
tableView.deselectRow(at: indexPath, animated: false)


// Toggle selection
let item = self.items[indexPath.row]
item.selected = !item.selected
tableView.reloadData()
}

Radio buttons however do require a custom implementation, see the other answers.

The decision of checking or unchecking the checkbox button is something out of the scope of the view. View itself should only take care of drawing the elements, not deciding about the internal state of that. My suggested implementation is as follows:

import UIKit


class Checkbox: UIButton {


let checkedImage = UIImage(named: "checked")
let uncheckedImage = UIImage(named: "uncheked")
var action: ((Bool) -> Void)? = nil


private(set) var isChecked: Bool = false {
didSet{
self.setImage(
self.isChecked ? self.checkedImage : self.uncheckedImage,
for: .normal
)
}
}


override func awakeFromNib() {
self.addTarget(
self,
action:#selector(buttonClicked(sender:)),
for: .touchUpInside
)
self.isChecked = false
}


@objc func buttonClicked(sender: UIButton) {
if sender == self {
self.action?(!self.isChecked)
}
}


func update(checked: Bool) {
self.isChecked = checked
}
}

It can be used with Interface Builder or programmatically. The usage of the view could be as the following example:

let checkbox_field = Checkbox(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
checkbox_field.action = { [weak checkbox_field] checked in
// any further checks and business logic could be done here
checkbox_field?.update(checked: checked)
}

Swift 5.0 Updated Simple RadioButton For Swift (No Library)

First set images to button One Checked and Second Unchecked.

Then Provide 2 Outlet Of RadioButton.

@IBOutlet weak var radioMale: UIButton!
@IBOutlet weak var radioFemale: UIButton!

Create IBAction With Both Button Action in One Method.

 @IBAction func btnRadioTapped(_ sender: UIButton) {


radioMale.setImage(UIImage(named: "Unchecked"), for: .normal)
radioFemale.setImage(UIImage(named: "Unchecked"), for: .normal)


if sender.currentImage == UIImage(named: "Unchecked"){


sender.setImage(UIImage(named: "Checked"), for: .normal)


}else{


sender.setImage(UIImage(named: "Unchecked"), for: .normal)
}


}

Swift 5, Checkbox with animation

NOTE:- if you want to remove the blue background while isSelected change the UIButton type from System to Custom

Check my Example for the Checkbox and Radio button https://github.com/rashidlatif55/CheckBoxAndRadioButton

Create an outlet for the button

@IBOutlet weak var checkBoxOutlet:UIButton!{
didSet{
checkBoxOutlet.setImage(UIImage(named:"unchecked"), for: .normal)
checkBoxOutlet.setImage(UIImage(named:"checked"), for: .selected)
}
}

Create an extension of UIButton

extension UIButton {
//MARK:- Animate check mark
func checkboxAnimation(closure: @escaping () -> Void){
guard let image = self.imageView else {return}
        

UIView.animate(withDuration: 0.1, delay: 0.1, options: .curveLinear, animations: {
image.transform = CGAffineTransform(scaleX: 0.85, y: 0.85)
            

}) { (success) in
UIView.animate(withDuration: 0.1, delay: 0, options: .curveLinear, animations: {
self.isSelected = !self.isSelected
//to-do
closure()
image.transform = .identity
}, completion: nil)
}
        

}
}

How to use

 @IBAction func checkbox(_ sender: UIButton){
sender.checkboxAnimation {
print("I'm done")
//here you can also track the Checked, UnChecked state with sender.isSelected
print(sender.isSelected)
            

}
}

I don't have enough reputation to comment, so I'll leave my version of Salil Dwahan's version here. Works for Swift 5, XCode 11.3.

First place your button on IB, select type "Custom" and create an outlet and an action with the Assistant Layout (Ctrl + Drag). Include the following code and it should end like this:

class YourViewController: UIViewController {
@IBOutlet weak var checkbox: UIButton!
@IBAction func checkboxTapped(_ sender: UIButton) {
checkbox.isSelected = !checkbox.isSelected
}


override func viewDidLoad() {
super.viewDidLoad()
checkbox.setImage(UIImage.init(named: "checkMark"), for: .selected)
}
}

Don't forget to add the image to Assets and change the name to match!

checkbox.isSelected is the way to check

I made a super simple class to handle this in a Mac application I'm working on. Hopefully, this is helpful to someone

RadioButtonController Class:

class RadioButtonController: NSObject {


var buttonArray : [NSButton] = []
var currentleySelectedButton : NSButton?
var defaultButton : NSButton = NSButton() {
didSet {
buttonArrayUpdated(buttonSelected: self.defaultButton)
}
}


func buttonArrayUpdated(buttonSelected : NSButton) {
for button in buttonArray {
if button == buttonSelected {
currentleySelectedButton = button
button.state = .on
} else {
button.state = .off
}
}
}

}

Implementation in View Controller:

class OnboardingDefaultLaunchConfiguration: NSViewController {


let radioButtonController : RadioButtonController = RadioButtonController()
@IBOutlet weak var firstRadioButton: NSButton!
@IBOutlet weak var secondRadioButton: NSButton!


@IBAction func folderRadioButtonSelected(_ sender: Any) {
radioButtonController.buttonArrayUpdated(buttonSelected: folderGroupRadioButton)
}


@IBAction func fileListRadioButtonSelected(_ sender: Any) {
radioButtonController.buttonArrayUpdated(buttonSelected: fileListRadioButton)
}


override func viewDidLoad() {
super.viewDidLoad()
radioButtonController.buttonArray = [firstRadioButton, secondRadioButton]
radioButtonController.defaultButton = firstRadioButton
}


}

Solution for Radio Button in Swift 4.2 without using third-party libraries

Create RadioButtonController.swift file and place following code in it:

import UIKit


class RadioButtonController: NSObject {
var buttonsArray: [UIButton]! {
didSet {
for b in buttonsArray {
b.setImage(UIImage(named: "radio_off"), for: .normal)
b.setImage(UIImage(named: "radio_on"), for: .selected)
}
}
}
var selectedButton: UIButton?
var defaultButton: UIButton = UIButton() {
didSet {
buttonArrayUpdated(buttonSelected: self.defaultButton)
}
}


func buttonArrayUpdated(buttonSelected: UIButton) {
for b in buttonsArray {
if b == buttonSelected {
selectedButton = b
b.isSelected = true
} else {
b.isSelected = false
}
}
}
}

Use it as below in your view controller file:

import UIKit


class CheckoutVC: UIViewController {


@IBOutlet weak var btnPaytm: UIButton!
@IBOutlet weak var btnOnline: UIButton!
@IBOutlet weak var btnCOD: UIButton!


let radioController: RadioButtonController = RadioButtonController()


override func viewDidLoad() {
super.viewDidLoad()


radioController.buttonsArray = [btnPaytm,btnCOD,btnOnline]
radioController.defaultButton = btnPaytm
}


@IBAction func btnPaytmAction(_ sender: UIButton) {
radioController.buttonArrayUpdated(buttonSelected: sender)
}


@IBAction func btnOnlineAction(_ sender: UIButton) {
radioController.buttonArrayUpdated(buttonSelected: sender)
}


@IBAction func btnCodAction(_ sender: UIButton) {
radioController.buttonArrayUpdated(buttonSelected: sender)
}
}

Be sure to add radio_off and radio_on images in Assets.

Result:

Though some of the answers mention it rightly that we can use the Selected State to set an image for Selected state of the button, it won't work elegantly when the button has to have both image and text.

Like many, I ended by subclassing UIButton; however, added support for setting images from Interface Builder.

Below is my code:

import UIKit


class CustomCheckbox: UIButton {


@IBInspectable var defaultStateImage: UIImage? = nil {
didSet{
self.setNeedsDisplay()
}
}


@IBInspectable var selectedStateImage: UIImage? = nil {
didSet{
self.setNeedsDisplay()
}
}


@IBInspectable var gapPadding: CGFloat = 0 {
didSet{
self.setNeedsDisplay()
}
}


@IBInspectable var isChecked: Bool = false {
didSet{
self.setNeedsDisplay()
}
}


var defaultImageView: UIImageView? = nil
var selectedImageView: UIImageView? = nil


override init(frame: CGRect) {
super.init(frame: frame)
setup()
}
required public init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setup()
}


override func layoutSubviews() {
super.layoutSubviews()
setup()
}


func setup() {
if(defaultStateImage != nil) {
defaultImageView = UIImageView(image: defaultStateImage)
defaultImageView?.translatesAutoresizingMaskIntoConstraints = false


addSubview(defaultImageView!)


let length = CGFloat(16)
titleEdgeInsets.left += length


NSLayoutConstraint.activate([
defaultImageView!.leadingAnchor.constraint(equalTo: self.leadingAnchor, constant: -gapPadding),
defaultImageView!.centerYAnchor.constraint(equalTo: self.titleLabel!.centerYAnchor, constant: 0),
defaultImageView!.widthAnchor.constraint(equalToConstant: length),
defaultImageView!.heightAnchor.constraint(equalToConstant: length)
])
}


if(selectedStateImage != nil) {
selectedImageView = UIImageView(image: selectedStateImage)
selectedImageView!.translatesAutoresizingMaskIntoConstraints = false


addSubview(selectedImageView!)


let length = CGFloat(16)
titleEdgeInsets.left += length


NSLayoutConstraint.activate([
selectedImageView!.leadingAnchor.constraint(equalTo: self.leadingAnchor, constant: -gapPadding),
selectedImageView!.centerYAnchor.constraint(equalTo: self.titleLabel!.centerYAnchor, constant: 0),
selectedImageView!.widthAnchor.constraint(equalToConstant: length),
selectedImageView!.heightAnchor.constraint(equalToConstant: length)
])
}


if defaultImageView != nil {
defaultImageView!.isHidden = isChecked
}


if selectedImageView != nil  {
selectedImageView!.isHidden = !isChecked
}


self.addTarget(self, action: #selector(checkChanged(_:)), for: .touchUpInside)
}


@objc func checkChanged(_ btn : UIButton){
self.isChecked = !self.isChecked


if defaultImageView != nil {
defaultImageView!.isHidden = isChecked
}


if selectedImageView != nil  {
selectedImageView!.isHidden = !isChecked
}
}
}

Couldn't find an easy SwiftUI version in this thread so here is a quick component using SF symbols.

struct CheckBox: View {


private let checked = Image("checkmark.square.fill")
private let unChecked = Image("checkmark.square")
@State private var isChecked: Bool = false


var body: some View {
ZStack {
isChecked == false ? unChecked : checked
}.onTapGesture {
isChecked.toggle()
}
}
}

If you use Image when change state. Try this:

 var nightButtonState: Bool = false {
didSet {
nightButtonState ? autoNightButton.setBackgroundImage(UIImage(named: "unchecked_icon"), for: .normal) : autoNightButton.setBackgroundImage(UIImage(named: "checked_icon"), for: .normal)
}
}

Button action:

@IBAction func autoNightButtonAction(_ sender: UIButton) {
self.nightButtonState.toggle()
}