【发布时间】：2018-05-25 05:31:33
【问题描述】：
我已在UITableView 中显示数据。该列表用于在购物车列表中添加购物车项目。
根据这张图可以看到以下细节：-
- 价格
- 产品名称
- 步进器添加数量
- 总金额
为此，我首先在UITableView 中添加了产品。然后步进动作来增加或减少数量，我根据给出的代码。
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let identifier = "cell"
var cell: ChartCell! = tableView.dequeueReusableCell(withIdentifier: identifier) as? ChartCell
if cell == nil {
tableView.register(UINib(nibName: "ChartCell", bundle: nil), forCellReuseIdentifier: identifier)
cell = tableView.dequeueReusableCell(withIdentifier: identifier) as? ChartCell
}
cell.setEventData(carts: chartViewModel.datafordisplay(atindex: indexPath))
cell.cartadd = { [weak self] in
if let i = self?.tableView.indexPath(for: $0) {
let productid = self?.chartViewModel.datafordisplay(atindex: indexPath)
print(productid?.cartid)
self?.chartViewModel.search(idsearch:productid?.cartid)
print(self?.chartViewModel.searchindex(objectatindex: 0))
cell.setcartData(cartsadd: (self?.chartViewModel.searchindex(objectatindex:0))!)
print(cell.quantity)
self?.chartViewModel.totalPriceInCart()
let theIntegerValue1 :[Int] = (self?.chartViewModel.totalvalue)!
let result = "\(theIntegerValue1[0])"
print(result)
let theStringValue1 :String = String(describing: result)
print(theStringValue1)
self?.totalresult.text = theStringValue1
print(i)
}
}
视图模型：-
class ChartViewModel: NSObject {
var datasourceModel:ChartDataSourceModel
var totalvalue:[Int] = []
var insertedArray:CartModel?
var filteredListArray:Array<CartModel>? = []
var productArray:CartModel?
var finalListArray:Array<CartModel>? = []
init(withdatasource newDatasourceModel: ChartDataSourceModel) {
datasourceModel = newDatasourceModel
print(datasourceModel.dataListArray)
}
func search(idsearch :String?) {
filteredListArray = datasourceModel.dataListArray?.filter{($0.cartid?.range(of: idsearch!, options: .caseInsensitive) != nil)}
print(filteredListArray)
}
func searchindex(objectatindex index: Int) -> CartModel {
return self.filteredListArray![index]
}
func datafordisplay(atindex indexPath: IndexPath) -> CartModel{
return datasourceModel.dataListArray![indexPath.row]
}
func numberOfRowsInSection(section:Int) -> Int {
return datasourceModel.dataListArray!.count
}
func delete(atIndex indexPath: IndexPath) {
datasourceModel.dataListArray!.remove(at: indexPath.row)
print(datasourceModel.dataListArray)
}
func totalPriceInCart() {
var totalPrice: Int = 0
for product in datasourceModel.dataListArray! {
totalPrice += product.cartsumint!
print(totalPrice)
}
self.totalvalue = [totalPrice]
}
func insert(atIndex indexPath: IndexPath) {
print(productArray)
print(datasourceModel.dataListArray)
datasourceModel.dataListArray!.insert(productArray!, at: indexPath.row)
print(datasourceModel.dataListArray)
self.datasourceModel.dataListArray = datasourceModel.dataListArray
print(datasourceModel.dataListArray)
self.finalListArray = self.datasourceModel.dataListArray
}
func add() {
datasourceModel.dataListArray?.append(insertedArray!)
print(datasourceModel.dataListArray)
print(insertedArray?.offerAddName)
print(insertedArray?.offerprice)
self.datasourceModel.dataListArray = datasourceModel.dataListArray
print(insertedArray?.cartsum)
}
}
上面的代码是添加数量。此代码在UITableView cellForRowAt 委托中给出。
但问题是：-
-随着我添加产品数量，价格也会发生变化，并将显示在UITableView。但是在滚动UITableView 时，数据会像以前一样显示。这意味着：-
初始假设：- 产品名称：汽车，价格：300，数量：1
这将显示在UITableView。当我添加数量：2，所以价格：600 这将显示在UITableView。
但问题是在滚动UITableView 时，它变成了价格：300，数量：1。
那么如何更新UITableView。该怎么办
UITableviewCell:-
func setEventData(carts:QM_CartModel)
{
self.name.text = carts.cartname
self.price.text = carts.carttotalprice
self.itemQuantityStepper.value = 1
setItemQuantity(quantity)
print(self.price.text)
let value = carts.cartsum
let x: Int? = Int(value!)
print(x)
let add = x!
print(add)
let theIntegerValue1 :Int = add
let theStringValue1 :String = String(theIntegerValue1)
// self.price.text = theStringValue1
self.price.text = "QR \(theStringValue1)"
print(self.price.text)
}
func setcartData(cartsadd:QM_CartModel)
{
let theIntegerValue :Int = self.quantity
let theStringValue :String = String(theIntegerValue)
cartsadd.cartquantity = theStringValue
print(cartsadd.cartquantity)
print(cartsadd.cartsum)
let value = cartsadd.cartsum
let qty = cartsadd.cartquantity
let x: Int? = Int(value!)
print(x)
let y: Int? = Int(qty!)
print(y)
let add = x! * y!
print(add)
let theIntegerValue1 :Int = add
let theStringValue1 :String = String(theIntegerValue1)
// self.price.text = theStringValue1
self.price.text = "QR \(theStringValue1)"
print(self.price.text)
cartsadd.cartsumint = theIntegerValue1
// print(cartsadd.cartsum)
}
【问题讨论】：
标签： ios swift uitableview