我想使 collectionView 单元格中的某些视图可点击。
ViewController的代码
class ViewController: UIViewController {
let collectionView:UICollectionView = {
let view = UICollectionViewFlowLayout()
view.scrollDirection = .horizontal
let cv : UICollectionView = UICollectionView(frame: CGRect.zero, collectionViewLayout: view)
cv.translatesAutoresizingMaskIntoConstraints = false
cv.showsHorizontalScrollIndicator = false
cv.isPagingEnabled = true
return cv
}()
let arrayData:[Data] = [Data(vectorImages: "Group 3", maskImages: "", rectangleImage: "", headingLabel: "Document Reader", detailText: "Lorem ipsum dolor sit amet consectetur. Sit tortor malesuada egestas velit magna. Egestas congue nisi tincidunt urna.",view: View(background: .systemPurple, cornerRadius: 12),labelInView: "Get Started"),
Data(vectorImages: "Group 10", maskImages: "Mask group-2", rectangleImage: "Rectangle 144", headingLabel:"Read and View", detailText: "Lorem ipsum dolor sit amet consectetur. Sit tortor malesuada egestas velit magna. Egestas congue nisi tincidunt urna.",view:View(background: .systemPurple, cornerRadius: 12),labelInView: "Get Started"),
Data(vectorImages: "Group 11", maskImages: "Mask group-3", rectangleImage: "Rectangle 144", headingLabel: "Read and View", detailText: "Lorem ipsum dolor sit amet consectetur. Sit tortor malesuada egestas velit magna. Egestas congue nisi tincidunt urna.",view: View(background: .systemPurple, cornerRadius: 12),labelInView: "Get Started"),
Data(vectorImages: "Group 12", maskImages: "Mask group-4", rectangleImage: "Rectangle 144", headingLabel: "Read and View", detailText: "Lorem ipsum dolor sit amet consectetur. Sit tortor malesuada egestas velit magna. Egestas congue nisi tincidunt urna.",view: View(background: .systemPurple, cornerRadius: 12),labelInView: "Get Started")]
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .systemPurple
setupView()
setDelegatesAndDatasource()
registerCell()
}
func setupView() {
view.addSubview(collectionView)
NSLayoutConstraint.activate([
collectionView.topAnchor.constraint(equalTo: view.topAnchor),
collectionView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
collectionView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor)
])
}
func setDelegatesAndDatasource() {
collectionView.delegate = self
collectionView.dataSource = self
}
func registerCell() {
collectionView.register(CollectionViewCell.self, forCellWithReuseIdentifier: "Cell")
}
}
扩展视图控制器：
UICollectionViewDelegateFlowLayout,UICollectionViewDataSource {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return arrayData.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell", for: indexPath)as! CollectionViewCell
cell.customView.vectorImage.image = UIImage(named: "\(arrayData[indexPath.row].vectorImages)")
cell.customView.maskImage.image = UIImage(named: "\(arrayData[indexPath.row].maskImages)")
cell.customView.rectangleView.image = UIImage(named:"\(arrayData[indexPath.row].rectangleImage)")
cell.customView.heading.text = arrayData[indexPath.row].headingLabel
cell.customView.detailText.text = arrayData[indexPath.row].detailText
cell.customView.view = arrayData[indexPath.row].view as! View
cell.customView.view.isUserInteractionEnabled = true
cell.customView.view.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(handleTap)))
cell.customView.labelInView.text = arrayData[indexPath.row].labelInView
return cell
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
return CGSize(width: 393 , height: 852)
}
@objc func handleTap() {
let controller = SecondViewController()
self.navigationController?.pushViewController(controller, animated: true)
}
}
在 CollectioView cell.customView.view 这个视图的这个单元格中，我希望它使其可点击
ScreenView的代码，在这个视图中我想使其可点击
import UIKit
class ScreenView: UIView {
let rectangleView = ImageView(image: "")
let maskImage = ImageView(image: "")
let vectorImage = ImageView(image: "")
let heading = Label(text: "Some Text", font: UIFont.systemFont(ofSize: 30, weight: .black), textColor: .black)
let detailText:UILabel = {
let lbl = UILabel()
lbl.translatesAutoresizingMaskIntoConstraints = false
lbl.font = .systemFont(ofSize: 14, weight: .light)
lbl.numberOfLines = 0
return lbl
}()
var view = View(background: .systemPurple, cornerRadius: 12)
let labelInView = Label(text: "Get Started", font: UIFont.systemFont(ofSize: 14, weight: .black), textColor: .white)
init(vectorImage:String, maskImage:String, rectangleView:String, labelHeading:String, labelText:String, view:UIView, viewLabel:String)
{
super.init(frame: .zero)
self.translatesAutoresizingMaskIntoConstraints = false
self.vectorImage.image = UIImage(named: vectorImage)
self.maskImage.image = UIImage(named: maskImage)
self.rectangleView.image = UIImage(named: rectangleView)
heading.text = labelHeading
detailText.text = labelText
self.view = view as! View
self.labelInView.text = viewLabel
setupViews()
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func setupViews() {
addSubview(rectangleView)
rectangleView.addSubview(maskImage)
rectangleView.addSubview(vectorImage)
addSubview(heading)
addSubview(detailText)
addSubview(view)
view.addSubview(labelInView)
NSLayoutConstraint.activate([
rectangleView.centerYAnchor.constraint(equalTo: centerYAnchor),
rectangleView.centerXAnchor.constraint(equalTo: centerXAnchor),
rectangleView.widthAnchor.constraint(equalToConstant: 345),
rectangleView.heightAnchor.constraint(equalToConstant: 441),
maskImage.topAnchor.constraint(equalTo: rectangleView.topAnchor),
maskImage.widthAnchor.constraint(equalToConstant: 345),
vectorImage.bottomAnchor.constraint(equalTo: rectangleView.bottomAnchor, constant: -10),
vectorImage.centerXAnchor.constraint(equalTo: rectangleView.centerXAnchor),
vectorImage.widthAnchor.constraint(equalToConstant: 313),
vectorImage.heightAnchor.constraint(equalToConstant: 251),
heading.topAnchor.constraint(equalTo: rectangleView.bottomAnchor, constant: 20),
heading.centerXAnchor.constraint(equalTo: centerXAnchor),
detailText.topAnchor.constraint(equalTo: heading.bottomAnchor, constant: 20),
detailText.centerXAnchor.constraint(equalTo: centerXAnchor),
detailText.widthAnchor.constraint(equalToConstant: 313),
view.topAnchor.constraint(equalTo: detailText.bottomAnchor, constant: 74),
view.leadingAnchor.constraint(equalTo: rectangleView.leadingAnchor ),
view.widthAnchor.constraint(equalToConstant: 345),
view.heightAnchor.constraint(equalToConstant: 52),
labelInView.centerYAnchor.constraint(equalTo: view.centerYAnchor),
labelInView.centerXAnchor.constraint(equalTo: view.centerXAnchor)
])
}
}
CollectionView中CustomCell的代码 导入 UIKit
class CollectionViewCell: UICollectionViewCell {
let customView = ScreenView(vectorImage: "", maskImage: "", rectangleView: "", labelHeading: "Some Text", labelText: "Text you", view:View(background: .systemPurple, cornerRadius: 12), viewLabel: "Get Started")
override init(frame: CGRect) {
super.init(frame: frame)
setupView()
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func setupView() {
addSubview(customView)
NSLayoutConstraint.activate([
customView.centerYAnchor.constraint(equalTo: centerYAnchor, constant: -100),
customView.centerXAnchor.constraint(equalTo: centerXAnchor)
])
}
}
首先，给未来一些建议......
在此处发布问题时，请确保您的代码将按原样运行。如果我们可以复制/粘贴/运行而不必猜测缺少的代码可能是什么，那么提供帮助就会容易得多。
另外，从简单开始！！！从实现目标所需的最少代码开始。
在这种情况下，让我们使用带有单个子视图的单元格类。
View Controller 类 - 非常标准。我们将使用一组颜色，用于设置每个单元格中“自定义视图”的背景。
class ViewController: UIViewController {
let collectionView:UICollectionView = {
let view = UICollectionViewFlowLayout()
view.scrollDirection = .horizontal
let cv : UICollectionView = UICollectionView(frame: CGRect.zero, collectionViewLayout: view)
cv.translatesAutoresizingMaskIntoConstraints = false
cv.showsHorizontalScrollIndicator = false
cv.isPagingEnabled = true
return cv
}()
let arrayData: [UIColor] = [
.systemRed, .systemGreen, .systemBlue, .systemYellow,
]
override func viewDidLoad() {
super.viewDidLoad()
setupView()
setDelegatesAndDatasource()
registerCell()
}
func setupView() {
view.addSubview(collectionView)
NSLayoutConstraint.activate([
collectionView.topAnchor.constraint(equalTo: view.topAnchor),
collectionView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
collectionView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor)
])
}
func setDelegatesAndDatasource() {
collectionView.delegate = self
collectionView.dataSource = self
}
func registerCell() {
collectionView.register(CollectionViewCell.self, forCellWithReuseIdentifier: "Cell")
}
}
视图控制器扩展
extension ViewController: UICollectionViewDelegateFlowLayout,UICollectionViewDataSource {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return arrayData.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell", for: indexPath)as! CollectionViewCell
cell.customView.backgroundColor = arrayData[indexPath.item]
return cell
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
return CGSize(width: 393 , height: 852)
}
}
自定义单元格类 - 将单个
UIViewUITapGestureRecognizerclass CollectionViewCell: UICollectionViewCell {
let customView = UIView()
@objc func handleTap(_ t: UITapGestureRecognizer) {
print("Got Tap!")
// let's "flash" the customView's background color
// so we have a visual indication it was tapped
let c = customView.backgroundColor
customView.backgroundColor = .yellow
UIView.animate(withDuration: 0.75, animations: {
self.customView.backgroundColor = c
})
}
override init(frame: CGRect) {
super.init(frame: frame)
setupView()
// create and add Tap Gesture Recognizer to customView
let t = UITapGestureRecognizer(target: self, action: #selector(handleTap(_:)))
customView.addGestureRecognizer(t)
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func setupView() {
customView.layer.cornerRadius = 12
customView.translatesAutoresizingMaskIntoConstraints = false
// make sure we addSubview to contentView !!
contentView.addSubview(customView)
NSLayoutConstraint.activate([
customView.widthAnchor.constraint(equalToConstant: 300.0),
customView.heightAnchor.constraint(equalToConstant: 400.0),
customView.centerYAnchor.constraint(equalTo: centerYAnchor, constant: -100),
customView.centerXAnchor.constraint(equalTo: centerXAnchor),
])
}
}