从子类访问 IBOutlet，插座不能连接到重复内容子类
Accessing IBOutlet from subclass, outlets cannot be connected to repeating content subclass
我在 collectionviewcell 中嵌入了一个按钮，并研究了为什么“插座无法连接到重复的内容子类”。我继续创建了一个具有 UICollectionViewCell 超类的子类。但是，我想通过 viewcontroller 的 viewdidload 设置按钮的 属性。我该怎么做？这是我的代码：
import UIKit
class Classic: UIViewController {
override func viewDidLoad()
{
}
}
class Subclass: UICollectionViewCell{
@IBOutlet weak var buttonOne: UIButton!
}
在我的图片中，左下方“collectionviewcell”中的按钮就是我要操作的按钮
您可以这样做，而不是在 viewDidLoad() 中获取按钮访问权限。在您的视图控制器中创建一个 collectionView 的 @IBOutlet class。
之后注册你自定义的 UICollectionViewCell subclass，在你的例子中是“Subclass”
之后使用 collectionView 的 dataSource 方法加载单元格并访问按钮。
class Classic: UIViewController, UICollectionViewDataSource {
@IBOutlet var collectionView: UICollectionView!
override func viewDidLoad()
{
// Register your cell
let nib = UINib(nibName: "Subclass", bundle: nil)
collectionView?.registerNib(nib, forCellWithReuseIdentifier: "myCell")
}
// Collection view data source method
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
// get your cell
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell", for: indexPath) as! Subclass
// here you will have access to your button
cell.buttonOne.setTitle("Button Title", for: .normal)
// To handle tap on button
cell.buttonOne.tag = indexPath.row
cell.buttonOne.addTarget(self, action: #selector(didTapButton(sender:)), for: .touchUpInside)
return cell
}
@objc func didTapButton(sender: UIButton) {
print("button tapped at index:-", sender.tag)
}
}
根据需要使用其他数据源和集合视图委托。希望这个解决方案对你有用。
您在 cellForItemAt 中设置了按钮属性（例如标题）。
旁注：使用 Subclass 作为您的 class 的名称会很混乱。
这是一个简单的例子：
class MyButtonCell: UICollectionViewCell{
@IBOutlet weak var buttonOne: UIButton!
var callback: (() -> ())?
@IBAction func buttonTapped(_ sender: UIButton) {
callback?()
}
}
class TestCollectionViewController: UICollectionViewController {
let buttonTitles: [String] = [
"First", "Second", "Third", "etc..."
]
override func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return buttonTitles.count
}
override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "myCellID", for: indexPath) as! MyButtonCell
cell.buttonOne.setTitle(buttonTitles[indexPath.item], for: [])
cell.callback = {
print("Button was tapped at \(indexPath)")
// do what you want when the button is tapped
}
return cell
}
}
请注意，我还在 单元格子 class 内为按钮 添加了一个 @IBAction。我还添加了这个 var / 属性:
var callback: (() -> ())?
这使得在您的控制器代码中设置 closure 变得容易 - 同样，在 cellForItemAt 中 - 允许您的控制器在单元格中的按钮被点击时处理和操作。
编辑
这是一个完整的实现：
class MyButtonCell: UICollectionViewCell{
@IBOutlet weak var buttonOne: UIButton!
var callback: (() -> ())?
override init(frame: CGRect) {
super.init(frame: frame)
commonInit()
}
required init?(coder: NSCoder) {
super.init(coder: coder)
commonInit()
}
func commonInit() -> Void {
contentView.layer.borderWidth = 1
contentView.layer.borderColor = UIColor.black.cgColor
}
@IBAction func buttonTapped(_ sender: UIButton) {
callback?()
}
}
class StevenViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource {
let buttonTitles: [String] = [
"One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten"
]
@IBOutlet var collectionView: UICollectionView!
override func viewDidLoad() {
super.viewDidLoad()
collectionView.delegate = self
collectionView.dataSource = self
}
func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return buttonTitles.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "myCellID", for: indexPath) as! MyButtonCell
// set the button title (and any other properties)
cell.buttonOne.setTitle(buttonTitles[indexPath.item], for: [])
// set the cell's callback closure
cell.callback = {
print("Button was tapped at \(indexPath)")
// do what you want when the button is tapped
}
return cell
}
}
这是 Storyboard 源 - 如果您以前没有这样做，请创建一个新的 Storyboard，select Open As -> Source Code，删除其中的内容，复制并粘贴以下内容...然后您可以 select Open As -> Interface Builder -Storyboard:
<?xml version="1.0" encoding="UTF-8"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="16096" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="81J-PL-nYH">
<device id="retina4_7" orientation="portrait" appearance="light"/>
<dependencies>
<deployment identifier="iOS"/>
<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16087"/>
<capability name="Safe area layout guides" minToolsVersion="9.0"/>
<capability name="collection view cell content view" minToolsVersion="11.0"/>
<capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
</dependencies>
<scenes>
<!--Steven View Controller-->
<scene sceneID="UOc-kB-D4u">
<objects>
<viewController id="81J-PL-nYH" customClass="StevenViewController" customModule="FirstNewMini" customModuleProvider="target" sceneMemberID="viewController">
<view key="view" contentMode="scaleToFill" id="5pE-V8-AOY">
<rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
<subviews>
<collectionView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" dataMode="prototypes" translatesAutoresizingMaskIntoConstraints="NO" id="eKk-rE-Fyn">
<rect key="frame" x="20" y="567" width="335" height="60"/>
<color key="backgroundColor" red="0.99942404029999998" green="0.98555368190000003" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstAttribute="height" constant="60" id="t8R-1V-ELi"/>
</constraints>
<collectionViewFlowLayout key="collectionViewLayout" scrollDirection="horizontal" automaticEstimatedItemSize="YES" minimumLineSpacing="10" minimumInteritemSpacing="10" id="34u-td-lg8">
<size key="itemSize" width="60" height="60"/>
<size key="headerReferenceSize" width="0.0" height="0.0"/>
<size key="footerReferenceSize" width="0.0" height="0.0"/>
<inset key="sectionInset" minX="0.0" minY="0.0" maxX="0.0" maxY="0.0"/>
</collectionViewFlowLayout>
<cells>
<collectionViewCell opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" reuseIdentifier="myCellID" id="slK-WV-d6z" customClass="MyButtonCell" customModule="FirstNewMini" customModuleProvider="target">
<rect key="frame" x="0.0" y="0.0" width="60" height="60"/>
<autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
<collectionViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" insetsLayoutMarginsFromSafeArea="NO" id="inr-uV-Mkf">
<rect key="frame" x="0.0" y="0.0" width="60" height="60"/>
<autoresizingMask key="autoresizingMask"/>
<subviews>
<button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="jO2-43-Y97">
<rect key="frame" x="7" y="15" width="46" height="30"/>
<color key="backgroundColor" red="0.92143100499999997" green="0.92145264149999995" blue="0.92144101860000005" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<state key="normal" title="Button"/>
<connections>
<action selector="buttonTapped:" destination="slK-WV-d6z" eventType="touchUpInside" id="ILI-g9-h3v"/>
</connections>
</button>
</subviews>
<constraints>
<constraint firstItem="jO2-43-Y97" firstAttribute="centerY" secondItem="inr-uV-Mkf" secondAttribute="centerY" id="K8s-Jl-sfY"/>
<constraint firstItem="jO2-43-Y97" firstAttribute="centerX" secondItem="inr-uV-Mkf" secondAttribute="centerX" id="kF4-R0-H31"/>
</constraints>
</collectionViewCellContentView>
<connections>
<outlet property="buttonOne" destination="jO2-43-Y97" id="EkG-Dz-2DC"/>
</connections>
</collectionViewCell>
</cells>
</collectionView>
</subviews>
<color key="backgroundColor" systemColor="systemBackgroundColor" cocoaTouchSystemColor="whiteColor"/>
<constraints>
<constraint firstItem="OxZ-Gp-ekf" firstAttribute="trailing" secondItem="eKk-rE-Fyn" secondAttribute="trailing" constant="20" id="Gua-Zi-IFQ"/>
<constraint firstItem="OxZ-Gp-ekf" firstAttribute="bottom" secondItem="eKk-rE-Fyn" secondAttribute="bottom" constant="40" id="I6q-K5-nN3"/>
<constraint firstItem="eKk-rE-Fyn" firstAttribute="leading" secondItem="OxZ-Gp-ekf" secondAttribute="leading" constant="20" id="sCP-Nn-RqH"/>
</constraints>
<viewLayoutGuide key="safeArea" id="OxZ-Gp-ekf"/>
</view>
<connections>
<outlet property="collectionView" destination="eKk-rE-Fyn" id="rxw-DZ-Kpi"/>
</connections>
</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="Ap0-Qs-M9q" userLabel="First Responder" customClass="UIResponder" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="199.19999999999999" y="155.17241379310346"/>
</scene>
</scenes>
</document>
当你 运行 时的结果应该是这样的（我给 collection 视图一个黄色背景以便于看到框架）：
- 从情节提要中添加 CollectionView outlet
- 在
cellForItemAtIndexPath 中添加 Button Tapped 块
import UIKit
class Classic: UIViewController {
@IBoutlet weak var collectionView : UICollectionView
override func viewDidLoad() {
collectionView.delegate = self
collectionView.dataSource = self
collectionView.register(SubClass.self, forCellWithReuseIdentifier: "cell")
}
}
extension Classic : UICollectionViewDelegate {
}
extension Classic : UICollectionViewDataSource {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return 1
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath)
cell.buttonTapped = {
print("Button Tapped")
}
return cell
}
}
class Subclass: UICollectionViewCell{
@IBOutlet weak var buttonOne: UIButton!
var buttonTapped : () -> () = { }
@IBAction func buttonTapped(_ sender: UIButton) {
self.buttonTapped()
}
}
我在 collectionviewcell 中嵌入了一个按钮，并研究了为什么“插座无法连接到重复的内容子类”。我继续创建了一个具有 UICollectionViewCell 超类的子类。但是，我想通过 viewcontroller 的 viewdidload 设置按钮的 属性。我该怎么做？这是我的代码：
import UIKit
class Classic: UIViewController {
override func viewDidLoad()
{
}
}
class Subclass: UICollectionViewCell{
@IBOutlet weak var buttonOne: UIButton!
}
在我的图片中，左下方“collectionviewcell”中的按钮就是我要操作的按钮
您可以这样做，而不是在 viewDidLoad() 中获取按钮访问权限。在您的视图控制器中创建一个 collectionView 的 @IBOutlet class。
之后注册你自定义的 UICollectionViewCell subclass，在你的例子中是“Subclass”
之后使用 collectionView 的 dataSource 方法加载单元格并访问按钮。
class Classic: UIViewController, UICollectionViewDataSource {
@IBOutlet var collectionView: UICollectionView!
override func viewDidLoad()
{
// Register your cell
let nib = UINib(nibName: "Subclass", bundle: nil)
collectionView?.registerNib(nib, forCellWithReuseIdentifier: "myCell")
}
// Collection view data source method
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
// get your cell
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell", for: indexPath) as! Subclass
// here you will have access to your button
cell.buttonOne.setTitle("Button Title", for: .normal)
// To handle tap on button
cell.buttonOne.tag = indexPath.row
cell.buttonOne.addTarget(self, action: #selector(didTapButton(sender:)), for: .touchUpInside)
return cell
}
@objc func didTapButton(sender: UIButton) {
print("button tapped at index:-", sender.tag)
}
}
根据需要使用其他数据源和集合视图委托。希望这个解决方案对你有用。
您在 cellForItemAt 中设置了按钮属性（例如标题）。
旁注：使用 Subclass 作为您的 class 的名称会很混乱。
这是一个简单的例子：
class MyButtonCell: UICollectionViewCell{
@IBOutlet weak var buttonOne: UIButton!
var callback: (() -> ())?
@IBAction func buttonTapped(_ sender: UIButton) {
callback?()
}
}
class TestCollectionViewController: UICollectionViewController {
let buttonTitles: [String] = [
"First", "Second", "Third", "etc..."
]
override func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return buttonTitles.count
}
override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "myCellID", for: indexPath) as! MyButtonCell
cell.buttonOne.setTitle(buttonTitles[indexPath.item], for: [])
cell.callback = {
print("Button was tapped at \(indexPath)")
// do what you want when the button is tapped
}
return cell
}
}
请注意，我还在 单元格子 class 内为按钮 添加了一个 @IBAction。我还添加了这个 var / 属性:
var callback: (() -> ())?
这使得在您的控制器代码中设置 closure 变得容易 - 同样，在 cellForItemAt 中 - 允许您的控制器在单元格中的按钮被点击时处理和操作。
编辑
这是一个完整的实现：
class MyButtonCell: UICollectionViewCell{
@IBOutlet weak var buttonOne: UIButton!
var callback: (() -> ())?
override init(frame: CGRect) {
super.init(frame: frame)
commonInit()
}
required init?(coder: NSCoder) {
super.init(coder: coder)
commonInit()
}
func commonInit() -> Void {
contentView.layer.borderWidth = 1
contentView.layer.borderColor = UIColor.black.cgColor
}
@IBAction func buttonTapped(_ sender: UIButton) {
callback?()
}
}
class StevenViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource {
let buttonTitles: [String] = [
"One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten"
]
@IBOutlet var collectionView: UICollectionView!
override func viewDidLoad() {
super.viewDidLoad()
collectionView.delegate = self
collectionView.dataSource = self
}
func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return buttonTitles.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "myCellID", for: indexPath) as! MyButtonCell
// set the button title (and any other properties)
cell.buttonOne.setTitle(buttonTitles[indexPath.item], for: [])
// set the cell's callback closure
cell.callback = {
print("Button was tapped at \(indexPath)")
// do what you want when the button is tapped
}
return cell
}
}
这是 Storyboard 源 - 如果您以前没有这样做，请创建一个新的 Storyboard，select Open As -> Source Code，删除其中的内容，复制并粘贴以下内容...然后您可以 select Open As -> Interface Builder -Storyboard:
<?xml version="1.0" encoding="UTF-8"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="16096" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="81J-PL-nYH">
<device id="retina4_7" orientation="portrait" appearance="light"/>
<dependencies>
<deployment identifier="iOS"/>
<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16087"/>
<capability name="Safe area layout guides" minToolsVersion="9.0"/>
<capability name="collection view cell content view" minToolsVersion="11.0"/>
<capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
</dependencies>
<scenes>
<!--Steven View Controller-->
<scene sceneID="UOc-kB-D4u">
<objects>
<viewController id="81J-PL-nYH" customClass="StevenViewController" customModule="FirstNewMini" customModuleProvider="target" sceneMemberID="viewController">
<view key="view" contentMode="scaleToFill" id="5pE-V8-AOY">
<rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
<subviews>
<collectionView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" dataMode="prototypes" translatesAutoresizingMaskIntoConstraints="NO" id="eKk-rE-Fyn">
<rect key="frame" x="20" y="567" width="335" height="60"/>
<color key="backgroundColor" red="0.99942404029999998" green="0.98555368190000003" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstAttribute="height" constant="60" id="t8R-1V-ELi"/>
</constraints>
<collectionViewFlowLayout key="collectionViewLayout" scrollDirection="horizontal" automaticEstimatedItemSize="YES" minimumLineSpacing="10" minimumInteritemSpacing="10" id="34u-td-lg8">
<size key="itemSize" width="60" height="60"/>
<size key="headerReferenceSize" width="0.0" height="0.0"/>
<size key="footerReferenceSize" width="0.0" height="0.0"/>
<inset key="sectionInset" minX="0.0" minY="0.0" maxX="0.0" maxY="0.0"/>
</collectionViewFlowLayout>
<cells>
<collectionViewCell opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" reuseIdentifier="myCellID" id="slK-WV-d6z" customClass="MyButtonCell" customModule="FirstNewMini" customModuleProvider="target">
<rect key="frame" x="0.0" y="0.0" width="60" height="60"/>
<autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
<collectionViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" insetsLayoutMarginsFromSafeArea="NO" id="inr-uV-Mkf">
<rect key="frame" x="0.0" y="0.0" width="60" height="60"/>
<autoresizingMask key="autoresizingMask"/>
<subviews>
<button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="jO2-43-Y97">
<rect key="frame" x="7" y="15" width="46" height="30"/>
<color key="backgroundColor" red="0.92143100499999997" green="0.92145264149999995" blue="0.92144101860000005" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<state key="normal" title="Button"/>
<connections>
<action selector="buttonTapped:" destination="slK-WV-d6z" eventType="touchUpInside" id="ILI-g9-h3v"/>
</connections>
</button>
</subviews>
<constraints>
<constraint firstItem="jO2-43-Y97" firstAttribute="centerY" secondItem="inr-uV-Mkf" secondAttribute="centerY" id="K8s-Jl-sfY"/>
<constraint firstItem="jO2-43-Y97" firstAttribute="centerX" secondItem="inr-uV-Mkf" secondAttribute="centerX" id="kF4-R0-H31"/>
</constraints>
</collectionViewCellContentView>
<connections>
<outlet property="buttonOne" destination="jO2-43-Y97" id="EkG-Dz-2DC"/>
</connections>
</collectionViewCell>
</cells>
</collectionView>
</subviews>
<color key="backgroundColor" systemColor="systemBackgroundColor" cocoaTouchSystemColor="whiteColor"/>
<constraints>
<constraint firstItem="OxZ-Gp-ekf" firstAttribute="trailing" secondItem="eKk-rE-Fyn" secondAttribute="trailing" constant="20" id="Gua-Zi-IFQ"/>
<constraint firstItem="OxZ-Gp-ekf" firstAttribute="bottom" secondItem="eKk-rE-Fyn" secondAttribute="bottom" constant="40" id="I6q-K5-nN3"/>
<constraint firstItem="eKk-rE-Fyn" firstAttribute="leading" secondItem="OxZ-Gp-ekf" secondAttribute="leading" constant="20" id="sCP-Nn-RqH"/>
</constraints>
<viewLayoutGuide key="safeArea" id="OxZ-Gp-ekf"/>
</view>
<connections>
<outlet property="collectionView" destination="eKk-rE-Fyn" id="rxw-DZ-Kpi"/>
</connections>
</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="Ap0-Qs-M9q" userLabel="First Responder" customClass="UIResponder" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="199.19999999999999" y="155.17241379310346"/>
</scene>
</scenes>
</document>
当你 运行 时的结果应该是这样的（我给 collection 视图一个黄色背景以便于看到框架）：
- 从情节提要中添加 CollectionView outlet
- 在
cellForItemAtIndexPath 中添加 Button Tapped 块
import UIKit
class Classic: UIViewController {
@IBoutlet weak var collectionView : UICollectionView
override func viewDidLoad() {
collectionView.delegate = self
collectionView.dataSource = self
collectionView.register(SubClass.self, forCellWithReuseIdentifier: "cell")
}
}
extension Classic : UICollectionViewDelegate {
}
extension Classic : UICollectionViewDataSource {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return 1
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath)
cell.buttonTapped = {
print("Button Tapped")
}
return cell
}
}
class Subclass: UICollectionViewCell{
@IBOutlet weak var buttonOne: UIButton!
var buttonTapped : () -> () = { }
@IBAction func buttonTapped(_ sender: UIButton) {
self.buttonTapped()
}
}