我有一个CollectionViewController和多个单元格。但是，当我似乎点击这些单元格之一时，在didSelectItemAt读取之前，我需要多次点击。我的细胞被均匀地隔开，至少大到足以被它们轻拍。我只能在真实设备上而不是模拟器上遇到此问题。
这是我的代码
class TimeAvailabilityCell:UICollectionViewCell{
private let container:UIView = {
let view = UIView()
view.isUserInteractionEnabled = false
view.translatesAutoresizingMaskIntoConstraints = false
view.backgroundColor = .white
view.layer.borderWidth = 1
view.layer.borderColor = UIColor.systemBlue.cgColor
view.layer.cornerRadius = 8
return view
}()
public let timeLabel:UILabel = {
let label = UILabel()
label.isUserInteractionEnabled = false
label.translatesAutoresizingMaskIntoConstraints = false
label.numberOfLines = 0
label.font = UIFont(name: "AppleSDGothicNeo-Regular", size: 18)
label.textColor = .systemBlue
return label
}()
override init(frame: CGRect) {
super.init(frame:frame)
self.backgroundColor = .green
self.addSubview(container)
container.widthAnchor.constraint(equalToConstant: 100).isActive = true
container.heightAnchor.constraint(equalToConstant: 50).isActive = true
container.centerXAnchor.constraint(equalTo: self.centerXAnchor).isActive = true
container.centerYAnchor.constraint(equalTo: self.centerYAnchor).isActive = true
container.addSubview(timeLabel)
timeLabel.centerXAnchor.constraint(equalTo: container.centerXAnchor).isActive = true
timeLabel.centerYAnchor.constraint(equalTo: container.centerYAnchor).isActive = true
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
这是我的CollectionViewController
class TimeSelectServiceController: UICollectionViewController, UICollectionViewDelegateFlowLayout{
var timeAvailableArray = [String]()
var timeTitle = ""
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = UIColor(red: 245/255, green: 245/255, blue: 245/255, alpha: 1)
setupCollectionView()
}
override func viewDidLayoutSubviews() {
self.updateCollectionView()
}
func setupCollectionView(){
let inset = UIEdgeInsets(top: 0, left: 25, bottom: 80, right: 25)
collectionView.contentInset = inset
self.edgesForExtendedLayout = UIRectEdge.bottom
collectionView.backgroundColor = .white
collectionView.delegate = self
collectionView.dataSource = self
collectionView.register(TimeAvailabilityCell.self, forCellWithReuseIdentifier: "cell")
collectionView.register(SectionTitleHeader.self, forSupplementaryViewOfKind:UICollectionView.elementKindSectionHeader, withReuseIdentifier: "SectionTitleHeader")
collectionView.allowsSelection = true
}
override func numberOfSections(in collectionView: UICollectionView) -> Int {
1
}
override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
timeAvailableArray.count
}
override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! TimeAvailabilityCell
let model = timeAvailableArray[indexPath.row]
cell.timeLabel.text = model.description
return cell
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
return CGSize(width: self.collectionView.frame.width, height: 50)
}
override func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
let reusableview = UICollectionReusableView()
switch kind {
case UICollectionView.elementKindSectionHeader:
//FOR HEADER VIEWS
let headerView = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "SectionTitleHeader", for: indexPath) as! SectionTitleHeader
headerView.title.text = timeTitle
headerView.seeAll.isHidden = true
headerView.backgroundColor = .white
return headerView
default:
return reusableview
}
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForHeaderInSection section: Int) -> CGSize {
if(section == 0){
return CGSize(width: view.frame.width, height: 100)
}
return CGSize(width: view.frame.width, height: 100)
}
override func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
let model = timeAvailableArray[indexPath.row]
BookServiceDetails.details.serviceDate = timeTitle + " at " + model.description
let viewController = ConfirmAppointmentController()
self.navigationController?.pushViewController(viewController, animated: true)
collectionView.deselectItem(at: indexPath, animated: true)
}
func updateCollectionView () {
DispatchQueue.main.async(execute: {
self.collectionView.reloadData()
})
}
}
编辑
似乎我的单元格越多，单击它越难。
在TimeAvailabilityCell中，将子视图添加到contentView，而不是self。在子视图上禁用用户交互应该没有关系。
来自documentation：“要配置单元格的外观，添加视图需将数据项的内容作为子视图呈现给视图在contentView属性中。不要将子视图直接添加到单元格本身。“
override init(frame: CGRect) {
super.init(frame:frame)
self.backgroundColor = .green
contentView.addSubview(container)
container.widthAnchor.constraint(equalToConstant: 100).isActive = true
container.heightAnchor.constraint(equalToConstant: 50).isActive = true
container.centerXAnchor.constraint(equalTo: self.centerXAnchor).isActive = true
container.centerYAnchor.constraint(equalTo: self.centerYAnchor).isActive = true
container.addSubview(timeLabel)
timeLabel.centerXAnchor.constraint(equalTo: container.centerXAnchor).isActive = true
timeLabel.centerYAnchor.constraint(equalTo: container.centerYAnchor).isActive = true
}
此：
override func viewDidLayoutSubviews() {
self.updateCollectionView()
}
func updateCollectionView () {
DispatchQueue.main.async(execute: {
self.collectionView.reloadData()
})
}
创建一个无限循环，在集合视图上调用reloadData会触发viewDidLayoutSubviews。基本上，收集视图会不断重新加载单元格，这会导致选择单元格工作不佳。
以下博客是有关如何设置和使用集合视图的良好参考；使用情节提要或以编程方式。它应在如何设置和配置收藏夹视图方面提供更多见解。
我不知道这和它有什么关系，但是我删除了collectionView.dataSource = self，现在一切正常。