我有带标签的 TableView ，我需要在 TableView 中为不同的类别显示不同的数组计数。为此，我为不同的类别采用了不同的数组，但我无法检查条件，条件一直转到 numberOfRowsInSection 中的外部返回计数，并且我在 tableview 中获取所有类别值。
我必须将 homeVC typeName 与 AllMakePaymentViewController 类别名称进行比较，并相应地显示在 tableview 中。
用于在 AllMakePaymentViewController TableView 中保存和选择显示类别值的类型的 HomeVC 代码:
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
if itemsArray[indexPath.item].typeName == "WATER"{
let nextViewController = self.storyboard?.instantiateViewController(withIdentifier: "AllMakePaymentViewController") as? AllMakePaymentViewController
self.navigationController?.pushViewController(nextViewController!, animated: true)
}
else if itemsArray[indexPath.item].typeName == "ELECTRICITY"{
let nextViewController = self.storyboard?.instantiateViewController(withIdentifier: "AllMakePaymentViewController") as? AllMakePaymentViewController
self.navigationController?.pushViewController(nextViewController!, animated: true)
}
else if itemsArray[indexPath.item].typeName == "CASH POINT"{
let nextViewController = self.storyboard?.instantiateViewController(withIdentifier: "AllMakePaymentViewController") as? AllMakePaymentViewController
self.navigationController?.pushViewController(nextViewController!, animated: true)
}
else{
AlertFun.ShowAlert(title: "", message: "will update soon..", in: self)
}
}
//MARK:- Service-call
func homeServiceCall(){
do{
let jsonObj = try JSONSerialization.jsonObject(with: respData, options: .allowFragments) as! [String: Any]
//print("the home json is \(jsonObj)")
let financerArray = jsonObj["financer"] as! [[String: Any]]
for financer in financerArray {
let id = financer["id"] as? String
let pic = financer["icon"] as? String
self.typeName = financer["tpe"] as! String
KeychainWrapper.standard.set(self.typeName!, forKey: "typeName")
var saveTypenameKey = KeychainWrapper.standard.string(forKey: "typeName")
print("keychain typename \(KeychainWrapper.standard.set(self.typeName!, forKey: "typeName"))")
self.itemsArray.append(JsonData(icon: pic ?? "", tpe: self.typeName ?? "", id: id ?? ""))
}
}
catch {
print("catch error")
}
}).resume()
}
AllMakePaymentViewController代码:
import UIKit
class PaymentTableViewCell: UITableViewCell{
@IBOutlet weak var pamntTypeLabel: UILabel!
}
class AllMakePaymentViewController: UIViewController {
@IBOutlet weak var tableView: UITableView!
var electricityArray = [String]()
var waterArray = [String]()
var iteamsArray = [String]()
var categoryName: String?
override func viewDidLoad() {
super.viewDidLoad()
allPaymentService()
}
func allPaymentService(){
let urlStr = "https://dev.com/webservices/api.php?rquest=billermdm"
let url = URL(string: urlStr)
URLSession.shared.dataTask(with: url!, completionHandler: {(data, response, error) in
guard let respData = data else {
return
}
guard error == nil else {
print("error")
return
}
do{
let jsonObj = try JSONSerialization.jsonObject(with: respData, options: .allowFragments) as! [String: Any]
//print("the all make payment json is \(jsonObj)")
let billerdetailsArray = jsonObj["billerdetails"] as! [[String: Any]]
for billerdetail in billerdetailsArray {
self.categoryName = billerdetail["bcategoryname"] as? String
if self.categoryName == "Water"{
let bName = billerdetail["bname"] as? String
self.waterArray.append(bName ?? "")
}
if self.categoryName == "cashpoint"{
let bName = billerdetail["bname"] as? String
self.iteamsArray.append(bName ?? "")
}
if self.categoryName == "Electricity"{
let bName = billerdetail["bname"] as? String
self.electricityArray.append(bName ?? "")
}
}
DispatchQueue.main.async {
self.tableView.reloadData()
}
}
catch {
print("catch error")
}
}).resume()
}
}
extension AllMakePaymentViewController: UITableViewDelegate, UITableViewDataSource {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if categoryName == "Water"{
return waterArray.count
}
if categoryName == "cashpoint"{
return iteamsArray.count
}
if categoryName == "Electricity"{
return electricityArray.count
}
return iteamsArray.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell") as! PaymentTableViewCell
if categoryName == "Electricity"{
cell.pamntTypeLabel.text = electricityArray[indexPath.row]
}
if categoryName == "Water"{
cell.pamntTypeLabel.text = waterArray[indexPath.row]
}
if categoryName == "cashpoint"{
cell.pamntTypeLabel.text = iteamsArray[indexPath.row]
}
else
{
cell.pamntTypeLabel.text = iteamsArray[indexPath.row]
}
self.tableView.separatorStyle = .none
return cell
}
}
如何比较 homeVC typeName select from didselectItematIndex 与 AllMakePaymentViewController categoryname 并在 tableview 标签中仅显示选定的项目 categoryName 值。请在上面的代码中帮助我。我被困在这里很长时间了。
最佳答案
您需要将类别注入(inject)到 nextViewControllers 中，以便它知道要显示的数据。为了尽量减少字符串文字的使用，我将它们转换为一个枚举，并更改了代码以改为使用它。
enum Category: String {
case water = "WATER"
case electricity = "ELECTRICITY"
case cashpoint = "CASHPOINT"
}
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
let nextViewController = self.storyboard?.instantiateViewController(withIdentifier: "AllMakePaymentViewController") as? AllMakePaymentViewController
switch Category(rawValue: [indexPath.item].typeName) {
case .water: nextViewcontroller.category = .water
case .electricity: nextViewcontroller.category = .electricity
case .cashpoint: nextViewcontroller.category = .cashpoint
default: AlertFun.ShowAlert(title: "", message: "will update soon..", in: self)
}
self.navigationController?.pushViewController(nextViewController!, animated: true)
}
class AllMakePaymentViewController: UIViewController {
@IBOutlet weak var tableView: UITableView!
var electricityArray = [String]()
var waterArray = [String]()
var iteamsArray = [String]()
var category: Category?
//load data etc
}
extension AllMakePaymentViewController: UITableViewDelegate, UITableViewDataSource {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
guard let category = category else {return 0}
switch category {
case .electricity: return electricityArray.count
case .water: return waterArray.count
case .cashpoint: return iteamsArray.count
}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell") as! PaymentTableViewCell
guard let category = category else {return 0}
switch category {
case .electricity: cell.pamntTypeLabel.text = electricityArray[indexPath.row]
case .water: cell.pamntTypeLabel.text = waterArray[indexPath.row]
case .cashpoint: cell.pamntTypeLabel.text = iteamsArray[indexPath.row]
}
self.tableView.separatorStyle = .none
return cell
}
}
注意:无法编译此文件，因此可能存在小错别字，但它应该为您提供所需内容的基础。询问 XCode 是否抛出任何语法错误。
关于arrays - 如何快速比较和显示 TableView 中numberOfRowsInSection中的不同数组计数，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/58641741/