TableviewCell 中的 TableView 不显示单元格
TableView within TableviewCell not displaying cells
我在 UITableviewCell 中有一个 UITablaView。这是我的代码:
UITableViewCell:
class ProductViewCell: UITableViewCell {
@IBOutlet weak var totalOrderButton: UIButton!
@IBOutlet weak var productImage: UIImageView!
@IBOutlet weak var productNameLabel: UILabel!
@IBOutlet weak var productSubNameLabel: UILabel!
@IBOutlet weak var productBioLabel: UILabel!
@IBOutlet weak var mlButton: UIButton!
@IBOutlet weak var productQuantity: UILabel!
@IBOutlet weak var plusButton: UIButton!
@IBOutlet weak var minusButton: UIButton!
@IBOutlet weak var greenHeartButton: UIButton!
@IBOutlet weak var liquorsTableView: UITableView!
var fourLiquorStores: [LiquorStore] = []
var currentUser: User!
var currentProduct: Product! {
didSet {
updateUI()
}
}
func updateUI() {
downloadProductImage()
productNameLabel.text = currentProduct.name
productSubNameLabel.text = currentProduct.subName
productBioLabel.text = currentProduct.description
productQuantity.text = "\(currentProduct.quantity)"
updateGreenHeart()
}
var cache = SAMCache.shared()
weak var delegate: ProductViewCellDelegate!
override func awakeFromNib() {
super.awakeFromNib()
liquorsTableView.estimatedRowHeight = 65
liquorsTableView.rowHeight = 65
liquorsTableView.delegate = self
liquorsTableView.dataSource = self
fetchLiquorStores()
}
func fetchLiquorStores() {
LiquorStore.observeNewLiquorStore { (liquorStore) in
LiquorStore.observeNewLiquorStore { (liquorStore) in
if !self.fourLiquorStores.contains(liquorStore) {
self.fourLiquorStores.append(liquorStore)
self.delegate.updateTableView()
print(self.fourLiquorStores)
}
}
}
}
func downloadProductImage() {
let productuid = currentProduct.uid
let profileImageKey = "\(productuid)"
if let image = cache?.object(forKey: profileImageKey) as? UIImage {
productImage.image = image
} else {
currentProduct.downloadPopularProductImage { [weak self] (image, error) in
if let error = error {
print(error.localizedDescription)
} else {
self?.productImage.image = image
self?.cache?.setObject(image, forKey: profileImageKey)
}
}
}
}
// Ad o delete Quantities
@IBAction func plusDidTap() {
if currentProduct.quantity >= 1 && currentProduct.quantity <= 60 {
currentProduct.quantity += 1
delegate.updateTableView()
}
}
@IBAction func minusDidTap() {
if currentProduct.quantity > 1 {
currentProduct.quantity -= 1
delegate.updateTableView()
}
}
func updateGreenHeart() {
if let currentUser = currentUser {
if currentUser.favoriteProducts.contains(currentProduct) {
greenHeartButton.setImage(#imageLiteral(resourceName: "GreenHeartFilled"), for: [])
} else {
greenHeartButton.setImage(#imageLiteral(resourceName: "GreenHeart"), for: [])
}
}
}
// Ad or delete Favorite Products
@IBAction func greenHeartDidTap() {
if currentUser.favoriteProducts.contains(currentProduct) {
self.greenHeartButton.setImage(#imageLiteral(resourceName: "GreenHeart"), for: [])
self.currentUser.deleteFavoriteProduct(product: currentProduct)
} else {
self.greenHeartButton.setImage(#imageLiteral(resourceName: "GreenHeartFilled"), for: [])
self.currentUser.addFavoriteProduct(product: currentProduct)
}
}
}
extension ProductViewCell: UITableViewDataSource, UITableViewDelegate {
func numberOfSections(in tableView: UITableView) -> Int {
return fourLiquorStores.count
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 1
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = liquorsTableView.dequeueReusableCell(withIdentifier: "LiquorStoreViewCell", for: indexPath) as! LiquorStoresViewCell
cell.currentProduct = self.currentProduct
cell.liquorStore = self.fourLiquorStores[indexPath.section]
return cell
}
}
UITablViewCell -2 :
class LiquorStoresViewCell: UITableViewCell {
@IBOutlet weak var liquorStoreNameLabel: UILabel!
@IBOutlet weak var liquorStorePriceLabel: UILabel!
@IBOutlet weak var liquorStoreTimeLabel: UILabel!
@IBOutlet weak var starStackView: UIStackView!
@IBOutlet weak var imageViewBoard: UIImageView!
var currentProduct: Product!
var currentPriceIndex: Int = 0
var liquorStore: LiquorStore! {
didSet {
updateUI()
}
}
func updateUI() {
changeLiquorStoreProductsUid()
liquorStoreNameLabel.text = liquorStore.userName
let index = liquorStore.products.index(of: currentProduct)
if let index = index {
let productPrice = liquorStore.products[index].price[currentPriceIndex]
format(price: productPrice)
}
}
// Format Product Price to Currency
func format(price: Double) {
let formatter = NumberFormatter()
formatter.locale = Locale.current // Change this to another locale if you want to force a specific locale, otherwise this is redundant as the current locale is the default already
formatter.numberStyle = .currency
if let formattedTipAmount = formatter.string(from: price as NSNumber) {
liquorStorePriceLabel.text = "Tip Amount: \(formattedTipAmount)"
}
}
// Func to organize LiquorStores
func changeLiquorStoreProductsUid () {
for product in liquorStore.products {
if self.currentProduct.name == product.name && self.currentProduct.description == product.description && self.currentProduct.subName == product.subName {
let index = liquorStore.products.index(of: product)
if let index = index {
liquorStore.products[index].uid = currentProduct.uid
}
}
}
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
liquorStorePriceLabel.textColor = UIColor.white
liquorStoreNameLabel.textColor = UIColor.white
liquorStoreTimeLabel.textColor = UIColor.white
imageViewBoard.backgroundColor = #colorLiteral(red: 0.5239839702, green: 0.5239839702, blue: 0.5239839702, alpha: 1)
for view in starStackView.subviews {
let image = view as! UIImageView
image.image = #imageLiteral(resourceName: "WhiteStar")
}
}
}
UITableviewCell 中的 UITableView 不显示数据:/
有什么问题吗?
这就是我正在构建的:
StoryBoard
模拟器中出现了这个,如您所见,第二个表视图是空的:
Simulator
PD:我正在从 firebase 成功下载 liquorStores。
虽然可能做你想做的事,但完全重新考虑你的架构会很多更简单。如果您的视图控制器只显示一个产品,外加一个酒类商店列表,那么产品视图根本不应该放在一个单元格中——只需将其设为普通视图,并将该视图设为您的 table的 header。然后单元格将成为酒类商店,您不再需要处理在单元格中嵌套 table 的问题。或者,您 可以 将产品视图保留在一个单元格中,但只需将酒类商店的原型作为第二种单元格 添加到同一个 table.
编辑:既然您已经发布了故事板屏幕截图,最简单的事情就是将您的酒类商店原型单元移动到 top-level table,删除子table 来自 top-level 单元格,并且在您的数据源中有
func tableView(_ tableView: UITableView, cellForRowAtIndexPath path: NSIndexPath) -> UITableViewCell {
if path.row == 0 {
return tableView.dequeueCellWithIdentifier("productDetailsCell")!
} else {
return tableView.dequeueCellWithIdentifier("liquorStoreCell")!
}
}
我在 UITableviewCell 中有一个 UITablaView。这是我的代码:
UITableViewCell:
class ProductViewCell: UITableViewCell {
@IBOutlet weak var totalOrderButton: UIButton!
@IBOutlet weak var productImage: UIImageView!
@IBOutlet weak var productNameLabel: UILabel!
@IBOutlet weak var productSubNameLabel: UILabel!
@IBOutlet weak var productBioLabel: UILabel!
@IBOutlet weak var mlButton: UIButton!
@IBOutlet weak var productQuantity: UILabel!
@IBOutlet weak var plusButton: UIButton!
@IBOutlet weak var minusButton: UIButton!
@IBOutlet weak var greenHeartButton: UIButton!
@IBOutlet weak var liquorsTableView: UITableView!
var fourLiquorStores: [LiquorStore] = []
var currentUser: User!
var currentProduct: Product! {
didSet {
updateUI()
}
}
func updateUI() {
downloadProductImage()
productNameLabel.text = currentProduct.name
productSubNameLabel.text = currentProduct.subName
productBioLabel.text = currentProduct.description
productQuantity.text = "\(currentProduct.quantity)"
updateGreenHeart()
}
var cache = SAMCache.shared()
weak var delegate: ProductViewCellDelegate!
override func awakeFromNib() {
super.awakeFromNib()
liquorsTableView.estimatedRowHeight = 65
liquorsTableView.rowHeight = 65
liquorsTableView.delegate = self
liquorsTableView.dataSource = self
fetchLiquorStores()
}
func fetchLiquorStores() {
LiquorStore.observeNewLiquorStore { (liquorStore) in
LiquorStore.observeNewLiquorStore { (liquorStore) in
if !self.fourLiquorStores.contains(liquorStore) {
self.fourLiquorStores.append(liquorStore)
self.delegate.updateTableView()
print(self.fourLiquorStores)
}
}
}
}
func downloadProductImage() {
let productuid = currentProduct.uid
let profileImageKey = "\(productuid)"
if let image = cache?.object(forKey: profileImageKey) as? UIImage {
productImage.image = image
} else {
currentProduct.downloadPopularProductImage { [weak self] (image, error) in
if let error = error {
print(error.localizedDescription)
} else {
self?.productImage.image = image
self?.cache?.setObject(image, forKey: profileImageKey)
}
}
}
}
// Ad o delete Quantities
@IBAction func plusDidTap() {
if currentProduct.quantity >= 1 && currentProduct.quantity <= 60 {
currentProduct.quantity += 1
delegate.updateTableView()
}
}
@IBAction func minusDidTap() {
if currentProduct.quantity > 1 {
currentProduct.quantity -= 1
delegate.updateTableView()
}
}
func updateGreenHeart() {
if let currentUser = currentUser {
if currentUser.favoriteProducts.contains(currentProduct) {
greenHeartButton.setImage(#imageLiteral(resourceName: "GreenHeartFilled"), for: [])
} else {
greenHeartButton.setImage(#imageLiteral(resourceName: "GreenHeart"), for: [])
}
}
}
// Ad or delete Favorite Products
@IBAction func greenHeartDidTap() {
if currentUser.favoriteProducts.contains(currentProduct) {
self.greenHeartButton.setImage(#imageLiteral(resourceName: "GreenHeart"), for: [])
self.currentUser.deleteFavoriteProduct(product: currentProduct)
} else {
self.greenHeartButton.setImage(#imageLiteral(resourceName: "GreenHeartFilled"), for: [])
self.currentUser.addFavoriteProduct(product: currentProduct)
}
}
}
extension ProductViewCell: UITableViewDataSource, UITableViewDelegate {
func numberOfSections(in tableView: UITableView) -> Int {
return fourLiquorStores.count
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 1
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = liquorsTableView.dequeueReusableCell(withIdentifier: "LiquorStoreViewCell", for: indexPath) as! LiquorStoresViewCell
cell.currentProduct = self.currentProduct
cell.liquorStore = self.fourLiquorStores[indexPath.section]
return cell
}
}
UITablViewCell -2 :
class LiquorStoresViewCell: UITableViewCell {
@IBOutlet weak var liquorStoreNameLabel: UILabel!
@IBOutlet weak var liquorStorePriceLabel: UILabel!
@IBOutlet weak var liquorStoreTimeLabel: UILabel!
@IBOutlet weak var starStackView: UIStackView!
@IBOutlet weak var imageViewBoard: UIImageView!
var currentProduct: Product!
var currentPriceIndex: Int = 0
var liquorStore: LiquorStore! {
didSet {
updateUI()
}
}
func updateUI() {
changeLiquorStoreProductsUid()
liquorStoreNameLabel.text = liquorStore.userName
let index = liquorStore.products.index(of: currentProduct)
if let index = index {
let productPrice = liquorStore.products[index].price[currentPriceIndex]
format(price: productPrice)
}
}
// Format Product Price to Currency
func format(price: Double) {
let formatter = NumberFormatter()
formatter.locale = Locale.current // Change this to another locale if you want to force a specific locale, otherwise this is redundant as the current locale is the default already
formatter.numberStyle = .currency
if let formattedTipAmount = formatter.string(from: price as NSNumber) {
liquorStorePriceLabel.text = "Tip Amount: \(formattedTipAmount)"
}
}
// Func to organize LiquorStores
func changeLiquorStoreProductsUid () {
for product in liquorStore.products {
if self.currentProduct.name == product.name && self.currentProduct.description == product.description && self.currentProduct.subName == product.subName {
let index = liquorStore.products.index(of: product)
if let index = index {
liquorStore.products[index].uid = currentProduct.uid
}
}
}
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
liquorStorePriceLabel.textColor = UIColor.white
liquorStoreNameLabel.textColor = UIColor.white
liquorStoreTimeLabel.textColor = UIColor.white
imageViewBoard.backgroundColor = #colorLiteral(red: 0.5239839702, green: 0.5239839702, blue: 0.5239839702, alpha: 1)
for view in starStackView.subviews {
let image = view as! UIImageView
image.image = #imageLiteral(resourceName: "WhiteStar")
}
}
}
UITableviewCell 中的 UITableView 不显示数据:/ 有什么问题吗?
这就是我正在构建的: StoryBoard
模拟器中出现了这个,如您所见,第二个表视图是空的:
Simulator
PD:我正在从 firebase 成功下载 liquorStores。
虽然可能做你想做的事,但完全重新考虑你的架构会很多更简单。如果您的视图控制器只显示一个产品,外加一个酒类商店列表,那么产品视图根本不应该放在一个单元格中——只需将其设为普通视图,并将该视图设为您的 table的 header。然后单元格将成为酒类商店,您不再需要处理在单元格中嵌套 table 的问题。或者,您 可以 将产品视图保留在一个单元格中,但只需将酒类商店的原型作为第二种单元格 添加到同一个 table.
编辑:既然您已经发布了故事板屏幕截图,最简单的事情就是将您的酒类商店原型单元移动到 top-level table,删除子table 来自 top-level 单元格,并且在您的数据源中有
func tableView(_ tableView: UITableView, cellForRowAtIndexPath path: NSIndexPath) -> UITableViewCell {
if path.row == 0 {
return tableView.dequeueCellWithIdentifier("productDetailsCell")!
} else {
return tableView.dequeueCellWithIdentifier("liquorStoreCell")!
}
}