在更改数组中的值后，我无法更新CollectionView。我对问题做了简短的gif。
如您所见，我可以在我的足球应用中为两个球队添加目标。当我第一次按下游戏统计按钮时，从底部滑入的统计视图中的结果（例如2：1）是正确的。但是随着比赛的进行和主队再得分，统计数据不会改变。
我尝试了几种方法来调用reloaddata（）来更新我的collectionView，但到目前为止没有成功。因此，希望有人可以让我走上正确的轨道。
非常感谢您。
GameStatistics视图控制器-GameStatistics.swift
import UIKit
class StatisticTitle: NSObject {
let name: String
init(name: String) {
self.name = name
}
}
class HomeTeamValue: NSObject {
var value: Int
init(value: Int) {
self.value = value
}
}
class AwayTeamValue: NSObject {
var value: Int
init(value: Int) {
self.value = value
}
}
class GameStatistics: NSObject, UICollectionViewDataSource, UICollectionViewDelegate, UICollectionViewDelegateFlowLayout {
let blackView = UIView()
let collectionView: UICollectionView = {
let layout = UICollectionViewFlowLayout()
let cv = UICollectionView(frame: .zero, collectionViewLayout: layout)
cv.backgroundColor = UIColor.white
return cv
}()
let cellId = "cellId"
let sectionHeader = "sectionHeader"
let sectionFooter = "sectionFooter"
let cellHeight: CGFloat = 40
let headerHeight: CGFloat = 80
let footerHeight: CGFloat = 50
let cellSpacing: CGFloat = 0
let statisticTitles: [StatisticTitle] = {
return[
StatisticTitle(name: "Goals"), //Tore
StatisticTitle(name: "Shots on Target"), //Schüsse aufs Tor
StatisticTitle(name: "Shots off Target"), //Schüsse neben das Tor
StatisticTitle(name: "Free Kicks"), //Freistöße
StatisticTitle(name: "Corner Kicks"), //Eckbälle
StatisticTitle(name: "Fouls"), //Fouls
StatisticTitle(name: "Offside / Centerline"), //Abseits / Mittellinie
StatisticTitle(name: "Cautions")] //Cautions Strafen
}()
lazy var homeTeamValues: [HomeTeamValue] = {
[ HomeTeamValue(value: homeGoals),
HomeTeamValue(value: 0),
HomeTeamValue(value: 0),
HomeTeamValue(value: 0),
HomeTeamValue(value: 0),
HomeTeamValue(value: 0),
HomeTeamValue(value: 0),
HomeTeamValue(value: 0)
]
}()
lazy var awayTeamValues: [AwayTeamValue] = {
[ AwayTeamValue(value: awayGoals),
AwayTeamValue(value: 0),
AwayTeamValue(value: 0),
AwayTeamValue(value: 0),
AwayTeamValue(value: 0),
AwayTeamValue(value: 0),
AwayTeamValue(value: 0),
AwayTeamValue(value: 0)
]
}()
func showStatistics() {
if let window = UIApplication.shared.keyWindow {
blackView.backgroundColor = UIColor(white: 0, alpha: 0.5)
blackView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(handleDismiss)))
window.addSubview(blackView)
window.addSubview(collectionView)
// Dynamic Height of Collection View
let value: CGFloat = CGFloat(statisticTitles.count)
let height: CGFloat = value * cellHeight + (value - 1) * cellSpacing + headerHeight + footerHeight
let y = window.frame.height - height
blackView.frame = window.frame
collectionView.frame = CGRect(x: 0, y: window.frame.height, width: window.frame.width, height: height)
blackView.alpha = 0
UIView.animate(withDuration: 1, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 1, options: .curveEaseOut, animations: {
self.blackView.alpha = 1
self.collectionView.frame = CGRect(x: 0, y: y, width: self.collectionView.frame.width, height: self.collectionView.frame.height)
}, completion: nil)
}
}
@objc func handleDismiss() {
UIView.animate(withDuration: 0.5) {
self.blackView.alpha = 0
if let window = UIApplication.shared.keyWindow {
self.collectionView.frame = CGRect(x: 0, y: window.frame.height, width: self.collectionView.frame.width, height: self.collectionView.frame.height)
}
}
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return statisticTitles.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: cellId, for: indexPath) as! GameStatisticCell
let title = statisticTitles[indexPath.item]
cell.statisticTitle = title
let homeValue = homeTeamValues[indexPath.item]
cell.homeTeamValue = homeValue
let awayValue = awayTeamValues[indexPath.item]
cell.awayTeamValue = awayValue
return cell
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
return CGSize(width: collectionView.frame.width, height: cellHeight)
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
return cellSpacing
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
return cellSpacing
}
func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
switch kind {
case UICollectionElementKindSectionHeader:
let supplementaryView = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: sectionHeader, for: indexPath)
return supplementaryView
case UICollectionElementKindSectionFooter:
let supplementaryView = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: sectionFooter, for: indexPath)
return supplementaryView
default:
fatalError("Unexpected element kind")
}
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForHeaderInSection section: Int) -> CGSize {
return CGSize(width: collectionView.frame.width, height: headerHeight)
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForFooterInSection section: Int) -> CGSize {
return CGSize(width: collectionView.frame.width, height: footerHeight)
}
override init() {
super.init()
collectionView.dataSource = self
collectionView.delegate = self
collectionView.register(GameStatisticCell.self, forCellWithReuseIdentifier: cellId)
collectionView.register(GameStatisticHeader.self, forSupplementaryViewOfKind: UICollectionElementKindSectionHeader, withReuseIdentifier: sectionHeader)
collectionView.register(GameStatisticFooter.self, forSupplementaryViewOfKind: UICollectionElementKindSectionFooter, withReuseIdentifier: sectionFooter)
}
}
GameStatistic Cell -GameStatisticCell.swift
import UIKit
class GameStatisticCell: BaseCell {
let statisticTitleLabel: UILabel = {
let label = UILabel()
label.text = "Shots on Goal"
label.textColor = ColorCodes.darkGray
label.textAlignment = .center
label.font = UIFont(name: "HelveticaNeue-Medium", size: 12)
return label
}()
var statisticTitle: StatisticTitle? {
didSet { statisticTitleLabel.text = statisticTitle?.name }
}
let homeTeamStatistic: UILabel = {
let label = UILabel()
label.text = String(12)
label.textColor = ColorCodes.darkGray
label.textAlignment = .right
label.font = UIFont(name: "HelveticaNeue-CondensedBold", size: 20)
return label
}()
var valueHomeTeam: Int = 1
var homeTeamValue: HomeTeamValue? {
didSet {
homeTeamStatistic.text = homeTeamValue?.value.description
valueHomeTeam = (homeTeamValue?.value)!
print(valueHomeTeam)
}
}
let awayTeamStatistic: UILabel = {
let label = UILabel()
label.text = String(2)
label.textColor = ColorCodes.darkGray
label.textAlignment = .left
label.font = UIFont(name: "HelveticaNeue-CondensedBold", size: 20)
return label
}()
var valueAwayTeam: Int = 1
var awayTeamValue: AwayTeamValue? {
didSet {
awayTeamStatistic.text = awayTeamValue?.value.description
valueAwayTeam = (awayTeamValue?.value)!
print(valueAwayTeam)
}
}
var homeTeamStatisticBar: UIView = {
let view = UIView()
view.backgroundColor = UIColor.lightGray
return view
}()
var awayTeamStatisticBar: UIView = {
let view = UIView()
view.backgroundColor = UIColor.darkGray
return view
}()
override func setupCell() {
super.setupCell()
backgroundColor = .white
addSubview(statisticTitleLabel)
addSubview(homeTeamStatistic)
addSubview(awayTeamStatistic)
addSubview(homeTeamStatisticBar)
addSubview(awayTeamStatisticBar)
let statisticValueSum = valueHomeTeam + valueAwayTeam
print(statisticValueSum)
let barWidthHome = CGFloat((Int(pitchWidth! / 2) - 40) * valueHomeTeam / statisticValueSum)
let barWidthAway = CGFloat((Int(pitchWidth! / 2) - 40) * valueAwayTeam / statisticValueSum)
let barCenter = pitchWidth! / 2
statisticTitleLabel.anchor(top: nil, left: leftAnchor, bottom: bottomAnchor, right: rightAnchor, paddingTop: 0, paddingLeft: 0, paddingBottom: 4, paddingRight: 0, width: 0, height: 0)
addConstraint(NSLayoutConstraint(item: statisticTitleLabel, attribute: .centerX, relatedBy: .equal, toItem: self, attribute: .centerX, multiplier: 1, constant: 0))
homeTeamStatisticBar.anchor(top: topAnchor, left: nil, bottom: nil, right: rightAnchor, paddingTop: 4, paddingLeft: 0, paddingBottom: 0, paddingRight: barCenter, width: barWidthHome, height: 16)
awayTeamStatisticBar.anchor(top: topAnchor, left: leftAnchor, bottom: nil, right: nil, paddingTop: 4, paddingLeft: barCenter, paddingBottom: 0, paddingRight: 0, width: barWidthAway, height: 16)
homeTeamStatistic.anchor(top: topAnchor, left: leftAnchor, bottom: nil, right: nil, paddingTop: 0, paddingLeft: 20, paddingBottom: 0, paddingRight: 0, width: 0, height: 0)
awayTeamStatistic.anchor(top: topAnchor, left: nil, bottom: nil, right: rightAnchor, paddingTop: 0, paddingLeft: 0, paddingBottom: 0, paddingRight: 20, width: 0, height: 0)
}
}
统计按钮-TimerBar.swift
var homeGoals: Int = 0 {
didSet {
GameStatistics().collectionView.reloadData()
}
}
var awayGoals: Int = 0 {
didSet {
GameStatistics().collectionView.reloadData()
}
}
class TimerBar: UIView {
[...] //more Code
let homeGoalsLabel: UILabel = {
let label = UILabel()
label.text = String(homeGoals)
label.textColor = UIColor.white
label.textAlignment = .right
label.font = UIFont(name: "HelveticaNeue-CondensedBold", size: 34)
return label
}()
let awayGoalsLabel: UILabel = {
let label = UILabel()
label.text = String(awayGoals)
label.textColor = UIColor.white
label.textAlignment = .left
label.font = UIFont(name: "HelveticaNeue-CondensedBold", size: 34)
return label
}()
[...] //more Code
//Handle Menu Buttons
let changeLineUp = ChangeLineUp()
var delegate: LineUpDelegate?
var pitchLayout: String = "Test"
@objc func lineUpButtonTapped() {
changeLineUp.showLineUps()
changeLineUp.delegate = self
}
let gameStatistics = GameStatistics()
@objc func statButtonTapped() {
gameStatistics.showStatistics()
}
@objc func homeTeamButtonTapped(_ sender:UIButton!) {
homeGoals = homeGoals + 1
homeGoalsLabel.text = String(homeGoals)
}
@objc func awayTeamButtonTapped(_ sender:UIButton!) {
awayGoals = awayGoals + 1
awayGoalsLabel.text = String(awayGoals)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
...
主音高视图-PitchViewController.swift
import UIKit
let lineup7_321: UICollectionViewLayout = LineUp7_3_2_1()
public var pitchCollectionView: UICollectionView? = {
var layout: UICollectionViewLayout = lineup7_321
let cv = UICollectionView(frame: .zero, collectionViewLayout: layout)
//cv.dataSource = self
//cv.delegate = self
return cv
}()
class PitchViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate, UICollectionViewDelegateFlowLayout {
let cellId1 = "PlayersCell"
let cellId2 = "SubstituteCell"
let timerBar: TimerBar = {
let tb = TimerBar()
return tb
}()
//Just for testing
let sections: [String] = ["Players", "Substitutes"]
let players: [String] = ["player1", "player2", "player3", "player4", "player5", "player6", "player7"]
let substitutes: [String] = ["player8", "player9", "player10", "player12", "player13"]
var sectionData: [Int: [String]] = [:]
//Swap Players
var alwaysSwapWithOrigin: Bool!
var placementTimer: DispatchSourceTimer!
var longPress: UILongPressGestureRecognizer!
var movingPlayer: (origin:IndexPath?,lifted:IndexPath?,placement:IndexPath?,previous:IndexPath?)
override func viewDidLoad() {
super.viewDidLoad()
navigationItem.titleView = UIImageView(image: #imageLiteral(resourceName: "overtime"))
navigationController?.navigationBar.isTranslucent = false
navigationController?.navigationBar.tintColor = UIColor.white
setupTimerBar()
setupPitchCollectionView()
setupSwapPlayers()
}
func setupTimerBar() {
view.addSubview(timerBar)
timerBar.anchor(top: view.safeAreaLayoutGuide.topAnchor, left: view.leftAnchor, bottom: nil, right: view.rightAnchor, paddingTop: 0, paddingLeft: 0, paddingBottom: 0, paddingRight: 0, width: 0, height: 135)
}
func setupPitchCollectionView() {
pitchCollectionView?.register(PlayersCell.self, forCellWithReuseIdentifier: cellId1)
pitchCollectionView?.register(SubstituteCell.self, forCellWithReuseIdentifier: cellId2)
pitchCollectionView?.delegate = self
pitchCollectionView?.dataSource = self
pitchCollectionView?.isScrollEnabled = false
view.addSubview(pitchCollectionView!)
pitchCollectionView?.backgroundColor = ColorCodes.lightGreen
pitchCollectionView?.anchor(top: view.topAnchor, left: view.leftAnchor, bottom: view.bottomAnchor, right: view.rightAnchor, paddingTop: 135, paddingLeft: 0, paddingBottom: 0, paddingRight: 0, width: 0, height: 0)
sectionData = [0: players, 1: substitutes]
}
func setupSwapPlayers() {
alwaysSwapWithOrigin = true
longPress = UILongPressGestureRecognizer(target: self, action:#selector(swapPlayersCells))
longPress.minimumPressDuration = 0.20
pitchCollectionView?.addGestureRecognizer(longPress)
let queue = DispatchQueue(label: "com.overtime")
placementTimer = DispatchSource.makeTimerSource(flags: [],queue:queue)
placementTimer.schedule(deadline: .now(), repeating:.milliseconds(250))
placementTimer.setEventHandler(handler: playersPositionUpdate)
}
func numberOfSections(in collectionView: UICollectionView) -> Int {
return sections.count
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return (sectionData[section]?.count)!
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
switch indexPath.section {
case 0:
let playerCell = collectionView.dequeueReusableCell(withReuseIdentifier: cellId1, for: indexPath) as! PlayersCell
playerCell.playerImage.image = UIImage(named: self.players[indexPath.row])
playerCell.playerName.text = self.players[indexPath.row].capitalized
return playerCell
case 1:
let substituteCell = collectionView.dequeueReusableCell(withReuseIdentifier: cellId2, for: indexPath) as! SubstituteCell
substituteCell.substituteImage.image = UIImage(named: self.substitutes[indexPath.row])
substituteCell.substituteName.text = self.substitutes[indexPath.row].capitalized
return substituteCell
default:
fatalError("Error")
}
}
func collectionView(_ collectionView: UICollectionView, moveItemAt sourceIndexPath: IndexPath, to destinationIndexPath: IndexPath) {
// required for interactive movement
}
func collectionView(_ collectionView: UICollectionView, targetIndexPathForMoveFromItemAt originalIndexPath: IndexPath, toProposedIndexPath proposedIndexPath: IndexPath) -> IndexPath {
// return the index path of selected to prevent other cells reshuffling whilst moving cell around
return movingPlayer.lifted!
}
}
答案 0 :(得分：1)
我没有看到任何关于Home / Away值的声明，这是一个示例，希望您能从中得到启发
private var homeGoals : Int = 0 {
didSet {
collectionView.reloadData()
}
}
private var awayGoals : Int = 0 {
didSet {
collectionView.reloadData()
}
}
@objc func homeTeamButtonTapped(_ sender: UIButton) {
homeGoals = homeGoals + 1
}
如您所见，homeGoals变量collectionView的任何新值将立即重新加载，您必须在单元格中使用