我有三个部分(see the image),其中一个部分是显示项目,剩下的两个单元格是使用stroyboard设计的,如果我在第一部分使用删除按钮删除所有项目然后剩下的两个部分需要隐藏,并显示一些文字可以任何人帮助我如何做到这一点?
func numberOfSections(in tableView: UITableView) -> Int{
// #warning Incomplete implementation, return the number of sections
return 3
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int{
if (section == 0){
return itemsArray.count
}else{
return 1
}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if indexPath.section == 0{
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! productTableViewCell
tableDetails.isHidden = false
myActivityIndicator.stopAnimating()
let arr = itemsArray[indexPath.row]
let urls = NSURL(string: arr["img"] as! String)
let data = NSData (contentsOf: urls! as URL)
cell.imageview.image = UIImage(data: data! as Data)
cell.nameLabel.text = arr["productName"]as! String
var price = arr["productPrice"] as! String
print(price)
var Quantity : Float = 1
let itemId : Int = arr["sku"] as! Int
print(itemId)
for aDic in CartArray{
if aDic["id"] == String(itemId){
Quantity = Float(String(aDic["quantity"]!))!
}
}
print(CartArray)
cell.stepper.value = Double(Int(Quantity))
cell.stepper.tag = indexPath.row
cell.stepper.addTarget(self, action: #selector(stepperValueChange(stepper:)), for:.valueChanged)
price = price.replacingOccurrences(of: "KD", with: "")
cartstring = String(Float(price)! * Quantity) + "0KD"
cell.priceLabel.text = cartstring
let quantityText = String(Quantity)
let endIndex = quantityText.index(quantityText.endIndex, offsetBy: -2)
let truncated = quantityText.substring(to: endIndex)
cell.quantityTextField.text = truncated
cell.price = price
cell.deleteButton.addTarget(self, action: #selector(deleteButtonAction(button:)), for: .touchUpInside)
cell.deleteButton.tag = indexPath.row
return cell
}else if indexPath.section == 1{
let cell = tableView.dequeueReusableCell(withIdentifier: "couponcell", for: indexPath) as! CouponTableViewCell
cell.applyButton.addTarget(self, action: #selector(applyButtonAction(button:)), for: .touchUpInside)
return cell
}else {
let cell = tableView.dequeueReusableCell(withIdentifier: "checkout", for: indexPath) as! checkoutTableViewCell
cell.finalCartpriceLabel.text = total
return cell
}
}
func deleteButtonAction(button : UIButton) {
let buttonPosition = button.convert(CGPoint(), to: tableDetails)
let index = tableDetails.indexPathForRow(at: buttonPosition)
self.itemsArray.remove(at: (index?.row)!)
self.tableDetails.deleteRows(at: [index!], with: .automatic)
tableDetails.reloadData()
}
答案 0 :(得分:0)
您只需检查self.itemsArray.count > 0
中的func numberOfSections(in:)
,然后显示此条件的所有三个部分。否则,只返回第一部分,这将自动隐藏另外两部分。
示例:强>
func numberOfSections(in tableView: UITableView) -> Int {
if self.itemsArray.count > 0 {
return 3
}
return 1
}
答案 1 :(得分:0)
使用以下内容修改numberOfSections
func numberOfSections(in tableView: UITableView) -> Int {
if self.itemsArray.count > 0 {
return 3
}
//Show Message List is Empty
return 1
}
答案 2 :(得分:0)
您可以管理类似的内容,
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int{
if (section == 0){
return itemsArray.count
}else{
if self.itemsArray.count == 0 {
return 0
}
else{
return 1
}
}
}
答案 3 :(得分:0)
在numberOfSection数据源方法中,检查itemArray是否没有元素,只返回一个部分。在cellForRowAtIndexPath中,再次检查相同的条件,并在此显示空文本。
func numberOfSections(in tableView: UITableView) -> Int {
if(itemArray.count > 0)
{
if (section == 0){
return itemsArray.count
}else{
return 1
}
} else {
return 1;
}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if(itemArray.count > 0)
{
}else {
//Show empty text view
}
}
答案 4 :(得分:0)
这段代码非常适合我
func deleteButtonAction(button : UIButton) {
let buttonPosition = button.convert(CGPoint(), to: tableDetails)
let index = tableDetails.indexPathForRow(at: buttonPosition)
self.itemsArray.remove(at: (index?.row)!)
self.tableDetails.deleteRows(at: [index!], with: .automatic)
tableDetails.reloadData()
if (tableView(tableDetails, numberOfRowsInSection: 0) == 0){
tableDetails.isHidden = true
}
if (tableDetails.isHidden == true){
self.loadingLabel.textColor = UIColor.gray
self.loadingLabel.textAlignment = NSTextAlignment.center
self.loadingLabel.text = "Your shopping cart is empty"
self.loadingLabel.frame = CGRect(x: 130, y: 320, width: 140, height: 30)
view.addSubview(loadingLabel)
}
}