单选按钮组Swift 3 Xcode 8

你可以连接你所有的按钮 IBAction

@IBAction func buttonClick(_ sender: UISwitch) { // you're using UISwitch I believe?

}

您应该将所有按钮添加到一个数组中:

// at class level
var buttons: [UISwitch]!

// in viewDidLoad
buttons = [buttonA, buttonB, buttonC]

然后,写下 buttonClick

buttons.forEach { $0.isChecked = false } // uncheck everything
sender.isChecked = true // check the button that is clicked on

选择:

尝试使用 UITableView accessoryType 到 .checkMark 每隔一排 .none

如果你太懒,试着继续搜索 cocoapods.org 看看其他人做了什么。

只需为所有三个按钮的touchUpInside事件创建一个选择器,并在IB中为正常状态设置radio\u off image,为选定状态设置Radiou on image,然后只需将btnClicked方法连接到所有按钮的touchUpInside事件

class ViewController: UIViewController {

@IBOutlet weak var btnFirst:UIButton!

@IBOutlet weak var btnSecond:UIButton!

@IBOutlet weak var btnThird:UIButton!

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

@IBAction func btnClicked(sender:UIButton){

    let buttonArray = [btnFirst,btnSecond,btnThird]

    buttonArray.forEach{

        $0?.isSelected = false

    }

    sender.isSelected = true

}

UITableView -使用 UITableView 用复选标记装饰。如果这些单选按钮的布局相当传统,那么这就是正确的范例。如果布局是网格而不是列表,则可以使用 UICollectionView

您可以使用 func table(_ table: WKInterfaceTable, didSelectRowAt rowIndex: Int) 在里面 UITableViewDelegate 以捕获选择。你可以打电话 indexPathForSelectedRow

https://developer.apple.com/library/content/referencelibrary/GettingStarted/DevelopiOSAppsSwift/CreateATableView.html

protocol RadioButtonDelegate: class {
    func didTapButton(_ button: UIButton)
}

class RadioButtonGroup {
    private var buttons: [UIButton] = []
    weak var delegate: RadioButtonDelegate?

    var selectedButton: UIButton? { return buttons.filter { $0.isSelected }.first }

    func addButton(_ button: UIButton) {
        buttons.append(button)
    }

    @objc private func didTapButton(_ button: UIButton) {
        button.isSelected = true

        deselectButtonsOtherThan(button)

        delegate?.didTapButton(button)
    }

    private func deselectButtonsOtherThan(_ selectedButton: UIButton) {
        for button in buttons where button != selectedButton {
            button.isSelected = false
        }
    }
}

class MyView: UIView {
    private var radioButtonGroup = RadioButtonGroup()

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)

        let button1 = UIButton(type: .custom)
        button1.setTitle("Eeeny", for: .normal)
        let button2 = UIButton(type: .custom)
        button2.setTitle("Meeny", for: .normal)
        let button3 = UIButton(type: .custom)
        button3.setTitle("Miny", for: .normal)

        self.radioButtonGroup.addButton(button1)
        self.radioButtonGroup.addButton(button2)
        self.radioButtonGroup.addButton(button3)

        addSubview(button1)
        addSubview(button2)
        addSubview(button3)
    }
}

import UIKit

类ViewController:UIViewController{

@IBOutlet weak var maleLB: UIButton!
@IBOutlet weak var femaleLB: UIButton!
@IBOutlet weak var otherLB: UIButton!

var gender = "Male"
override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view.
    if gender == "Male"{
        femaleLB.isSelected = true
    }
}

@IBAction func maleBtn(_ sender: UIButton) {
    if sender.isSelected {
        sender.isSelected = false
        femaleLB.isSelected = false
        otherLB.isSelected = false
    }
    else{
        sender.isSelected = true
        femaleLB.isSelected = false
        otherLB.isSelected = false
        
    }
}
@IBAction func femaleBtn(_ sender: UIButton) {
    if sender.isSelected {
        sender.isSelected = false
        maleLB.isSelected = false
        otherLB.isSelected = false
    }
    else{
        sender.isSelected = true
        maleLB.isSelected = false
        otherLB.isSelected = false
        
    }
}
@IBAction func otherBtn(_ sender: UIButton) {
    if sender.isSelected {
        sender.isSelected = false
        maleLB.isSelected = false
        femaleLB.isSelected = false
    }
    else{
        sender.isSelected = true
        maleLB.isSelected = false
        femaleLB.isSelected = false
        
    }

}