UITableViewCell повторяется и теряет свои данные при прокрутке
Я создал форму, в которой я использую Textfields и TextField Dropdown. Во время прокрутки значения текстовых полей TableView теряются, а для раскрывающихся значений текстового поля автоматически устанавливается значение по умолчанию.
Вот мой код:
enum TextFieldTags:Int {
case ProspectName = 10, VisitDate, VisitType, Industry, Source, DissSummary, Requirements, FollowUpDate, AnticipatedDealValue, Probability, ExpectedClosingDate, Status, NextStep, Emp, Rev, AddressLine1, AddressLine2, Country, States, City, Zip, Mobile,Fax
}
var prospectName:String?, visitDate:String? , visitType:String?, industry:String?, source:String?, dissSummary:String?, requirements:String?, followUpDate:String?, anticipatedDealValue:String?, probability:String?, expectedClosingDate:String?, status:String?, nextStep:String?, emp:String?, rev:String?, addressLine1:String?, addressLine2:String?, country, statesVal:String?, cityVal:String?, zip:String?, mobile:String?,fax:String?
var currentLeadMaster:WizLeadMaster?
// MARK: - Section Data Structure
struct Section {
var name: String!
var options: [Any]!
var collapsed: Bool!
var optionItem:[Any]!
var icon:UIImage!
init(name: String, options: [Any], collapsed: Bool = false,optionItem:[Any],icon:UIImage) {
self.name = name
self.options = options
self.collapsed = collapsed
self.optionItem = optionItem
self.icon = icon
}
}
// MARK: - Properties
@IBOutlet weak var tblLeadDetail:UITableView?
var dataSource:NSArray = NSArray(objects: "Lead Summary","Address","Products","Contacts","Attachment","Follow Up","Remarks")
var sections = [Section]()
lazy var visitArr:NSArray = {
let visitTypes = Handler.fetchLookUpOftype(type: LookUpType.enum_cRMVisittype)
var optionsArray = NSMutableArray(capacity: 0)
for visitType in visitTypes {
let visitModel = visitType as! WizLookUp
let dict = ["system":(visitModel.system! as String),"value":(visitModel.value! as String)]
optionsArray.add(dict as NSDictionary)
}
return optionsArray as NSArray
}()
lazy var leadStatus:NSArray = {
let visitTypes = Handler.fetchLookUpOftype(type: LookUpType.enum_cRMLeadStatus)
var optionsArray = NSMutableArray(capacity: 0)
for visitType in visitTypes {
let visitModel = visitType as! WizLookUp
let dict = ["system":(visitModel.system! as String),"value":(visitModel.value! as String)]
optionsArray.add(dict as NSDictionary)
}
return optionsArray as NSArray
}()
lazy var leadSource:NSArray = {
let visitTypes = Handler.fetchLookUpOftype(type: LookUpType.enum_cRMLeadsource)
var optionsArray = NSMutableArray(capacity: 0)
for visitType in visitTypes {
let visitModel = visitType as! WizLookUp
let dict = ["system":(visitModel.system! as String),"value":(visitModel.value! as String)]
optionsArray.add(dict as NSDictionary)
}
return optionsArray as NSArray
}()
lazy var industries:NSArray = {
let visitTypes = Handler.fetchLookUpOftype(type: LookUpType.enum_cRMCustomerType)
var optionsArray = NSMutableArray(capacity: 0)
for visitType in visitTypes {
let visitModel = visitType as! WizLookUp
let dict = ["system":(visitModel.system! as String),"value":(visitModel.value! as String)]
optionsArray.add(dict as NSDictionary)
}
return optionsArray as NSArray
}()
lazy var countries:NSArray = {
let visitTypes = Handler.countriesList()
var optionsArray = NSMutableArray(capacity: 0)
for visitType in visitTypes {
let visitModel = visitType as! WizCountryList
let dict = ["system":(visitModel.lable! as String),"value":(visitModel.value! as String)]
optionsArray.add(dict as NSDictionary)
}
return optionsArray as NSArray
}()
lazy var states:NSArray = {
let visitTypes = Handler.fetchLookUpOftype(type: LookUpType.enum_cRMTerritory)
var optionsArray = NSMutableArray(capacity: 0)
for visitType in visitTypes {
let visitModel = visitType as! WizLookUp
let dict = ["system":(visitModel.system! as String),"value":(visitModel.value! as String)]
optionsArray.add(dict as NSDictionary)
}
return optionsArray as NSArray
}()
func setStatesForCountry(_ country:String) -> Void{
}
func filterValue(_ arr:NSArray,key:String) -> Any {
let predicate = NSPredicate(format: "self == %@", key)
let filteredArr = arr.filtered(using: predicate)
if (filteredArr.count == 0) {
return ""
}
return filteredArr[0]
}
// MARK: - ViewDidLoad
override func viewDidLoad() {
super.viewDidLoad()
let barButtonItem = UIBarButtonItem(image:UIImage(named:"save1") , style: UIBarButtonItemStyle.done, target: self, action: #selector(saveLeadInfo))
navigationItem.rightBarButtonItem = barButtonItem
sections = [
Section(name: "Lead Summary", options: [["title":"Prospect Name","type":"input","value":(currentLeadMaster == nil) ? "":currentLeadMaster?.customer_name as Any,"tag":TextFieldTags.ProspectName.rawValue],
["title":"Visit Date","type":"date","value":(currentLeadMaster == nil) ? "":currentLeadMaster?.visited_date as Any,"tag":TextFieldTags.VisitDate.rawValue],
["title":"Visit Type","type":"dropdown","options":visitArr.value(forKeyPath: "system") as! Array<String>,"value":filterValue(visitArr.value(forKeyPath: "value") as! NSArray, key: ((currentLeadMaster == nil) ? "":currentLeadMaster?.visit_type)!),"tag":TextFieldTags.VisitType.rawValue],
["title":"Industry","type":"dropdown","options":industries.value(forKeyPath: "system"),"value":filterValue(industries.value(forKeyPath: "value") as! NSArray, key: ((currentLeadMaster == nil) ? "":currentLeadMaster?.type)!),"tag":TextFieldTags.Industry.rawValue],
["title":"Source","type":"dropdown","options":leadSource.value(forKeyPath: "system"),"value":filterValue(leadSource.value(forKeyPath: "value") as! NSArray , key: ((currentLeadMaster == nil) ? "":currentLeadMaster?.source)!),"tag":TextFieldTags.Source.rawValue],
["title":"Discussion Summary","type":"input","value":(currentLeadMaster == nil) ? "":currentLeadMaster?.summary_disc as Any,"tag":TextFieldTags.DissSummary.rawValue],
["title":"Requirements","type":"input","value":(currentLeadMaster == nil) ? "":currentLeadMaster?.requirements as Any ,"tag":TextFieldTags.Requirements.rawValue],
["title":"Follow-Up Date","type":"date","value":(currentLeadMaster == nil) ? "":currentLeadMaster?.followup_date as Any,"tag":TextFieldTags.FollowUpDate.rawValue],
["title":"Anticipated Deal Value","type":"input","value":(currentLeadMaster == nil) ? "":currentLeadMaster?.anticipated_deal_value as Any,"tag":TextFieldTags.AnticipatedDealValue.rawValue],
["title":"Probabilty","type":"input","value":(currentLeadMaster == nil) ? "":currentLeadMaster?.probability as Any,"tag":TextFieldTags.Probability.rawValue],
["title":"Expected Closing Date","type":"date","value":currentLeadMaster?.expected_closing_date as Any,"tag":TextFieldTags.ExpectedClosingDate.rawValue],
["title":"Status","type":"dropdown","options":leadStatus.value(forKeyPath: "system"),"value":filterValue(leadStatus.value(forKeyPath: "value") as! NSArray, key: ((currentLeadMaster == nil) ? "":currentLeadMaster?.status)!),"tag":TextFieldTags.Status.rawValue],
["title":"Next Step","type":"input","value":(currentLeadMaster == nil) ? "":currentLeadMaster?.next_activity_planned as Any,"tag":TextFieldTags.NextStep.rawValue],
["title":"Emp","type":"input","value":(currentLeadMaster == nil) ? "":currentLeadMaster?.no_of_emp as Any,"tag":TextFieldTags.Emp.rawValue],
["title":"Rev","type":"input","value":(currentLeadMaster == nil) ? "":currentLeadMaster?.annual_revenue as Any,"tag":TextFieldTags.Rev.rawValue]], collapsed: true, optionItem: [],icon:UIColor.clear.getImage(size: CGSize(width: 30, height: 30))),
Section(name: "Address", options: [["title":"Address Line 1","type":"input","value":(currentLeadMaster == nil) ? "":currentLeadMaster?.addressline1 as Any ,"tag":TextFieldTags.AddressLine1.rawValue],
["title":"Address Line 2","type":"input","value":(currentLeadMaster == nil) ? "":currentLeadMaster?.addressline2 as Any,"tag":TextFieldTags.AddressLine2.rawValue],
["title":"Select Country","type":"dropdown","options":countries.value(forKeyPath: "system") as! Array<String>,"value":filterValue(visitArr.value(forKeyPath: "value") as! NSArray, key: ((currentLeadMaster == nil) ? "":currentLeadMaster?.visit_type)!),"tag":TextFieldTags.Country.rawValue],
["title":"Select States","type":"dropdown","options":visitArr.value(forKeyPath: "system") as! Array<String>,"value":filterValue(visitArr.value(forKeyPath: "value") as! NSArray, key: ((currentLeadMaster == nil) ? "":currentLeadMaster?.visit_type)!),"tag":TextFieldTags.States.rawValue],
["title":"Select City","type":"input","value":(currentLeadMaster == nil) ? "":currentLeadMaster?.addressline2 as Any,"tag":TextFieldTags.City.rawValue],
["title":"Zip Code","type":"input","value":(currentLeadMaster == nil) ? "":currentLeadMaster?.addressline2 as Any,"tag":TextFieldTags.Zip.rawValue],
["title":"Mobile","type":"input","value":(currentLeadMaster == nil) ? "":currentLeadMaster?.addressline2 as Any,"tag":TextFieldTags.Mobile.rawValue],
["title":"Fax","type":"input","value":(currentLeadMaster == nil) ? "":currentLeadMaster?.addressline2 as Any,"tag":TextFieldTags.Fax.rawValue]
], collapsed: true, optionItem: [],icon:UIColor.clear.getImage(size: CGSize(width: 30, height: 30))),
Section(name: "Product", options: [], collapsed: true, optionItem: [],icon:UIImage.init(named: "add")!),
Section(name: "Contacts", options: [], collapsed: true, optionItem: [],icon:UIImage.init(named: "add")!),
Section(name: "Attachment", options: [], collapsed: true, optionItem: [],icon:UIImage.init(named: "attach")!),
]
let headerNib = UINib(nibName: "WizHeaderView", bundle: nil)
tblLeadDetail?.register(headerNib, forHeaderFooterViewReuseIdentifier: "headerLeads")
let textInputCell = UINib(nibName: "TextInputCell", bundle: nil)
tblLeadDetail?.register(textInputCell, forCellReuseIdentifier: "textinputcell")
let dropDownInputCell = UINib(nibName: "DropDownInputCell", bundle: nil)
tblLeadDetail?.register(dropDownInputCell, forCellReuseIdentifier: "dropDownInputCell")
let dropDownDateCell = UINib(nibName: "DropDownDateCell", bundle: nil)
tblLeadDetail?.register(dropDownDateCell, forCellReuseIdentifier: "dropDownDateCell")
tblLeadDetail?.reloadData()
}
func saveLeadInfo() -> Void {
}
// MARK: - TableView Delegates & Datasource
func numberOfSections(in tableView: UITableView) -> Int {
return sections.count
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
let optionsArray = sections[section].options
return optionsArray!.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let optionsArray = sections[indexPath.section].options
let dict = optionsArray?[indexPath.row] as! Dictionary<String,Any>
if (dict["type"] as! String == "dropdown") {
let cell = tableView.dequeueReusableCell(withIdentifier: "dropDownInputCell") as! DropDownInputCell
cell.txtInput.isOptionalDropDown = false
cell.txtInput.itemList = dict["options"] as! [String]
cell.lblText.text = dict["title"] as? String
cell.txtInput.selectedItem = dict["value"] as? String
cell.txtInput.tag = (dict["tag"] as? NSInteger)!
cell.backgroundColor = UIColor.clear
cell.selectionStyle = UITableViewCellSelectionStyle.none
cell.delegate = self
return cell
}
else if (dict["type"] as! String == "input") {
let cell = tableView.dequeueReusableCell(withIdentifier: "textinputcell") as! TextInputCell
cell.lblText.text = dict["title"] as? String
cell.selectionStyle = UITableViewCellSelectionStyle.none
cell.backgroundColor = UIColor.clear
cell.txtInput.text = dict["value"] as? String
cell.txtInput.tag = (dict["tag"] as? NSInteger)!
cell.delegate = self
return cell
}
else{
let cell = tableView.dequeueReusableCell(withIdentifier: "dropDownDateCell") as! DropDownDateCell
cell.lblText.text = dict["title"] as? String
cell.txtInput.dropDownMode = IQDropDownMode.datePicker
if dict["value"] as? String == "" {
cell.txtInput.setDate(Date(), animated: true)
}
else{
cell.txtInput.selectedItem = dict["value"] as? String
}
cell.txtInput.tag = (dict["tag"] as? NSInteger)!
cell.selectionStyle = UITableViewCellSelectionStyle.none
cell.backgroundColor = UIColor.clear
cell.delegate = self
return cell
}
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.deselectRow(at: indexPath, animated: true)
// if indexPath.row == 0 {
// performSegue(withIdentifier: "leadsummary", sender:nil)
// }
// else{
// performSegue(withIdentifier: "leadaddress", sender:nil)
// }
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
let header = tableView.dequeueReusableHeaderFooterView(withIdentifier: "headerLeads") as? WizHeaderView ?? WizHeaderView(reuseIdentifier: "headerLeads")
header.delegate = self
header.lblLeadSummary.text = sections[section].name
header.btnArrowButton.setImage(sections[section].icon, for: UIControlState.normal)
header.setCollapsed(sections[section].collapsed)
header.section = section
return header
}
func toggleSection(_ header: WizHeaderView, section: Int) {
let collapsed = !sections[section].collapsed
// Toggle collapse
sections[section].collapsed = collapsed
header.setCollapsed(collapsed)
// Adjust the height of the rows inside the section
tblLeadDetail?.beginUpdates()
for i in 0 ..< sections[section].options.count {
tblLeadDetail?.reloadRows(at: [IndexPath(row: i, section: section)], with: .automatic)
}
tblLeadDetail?.endUpdates()
}
@IBAction func placeOrder(_ sender: Any) {
let placeOrder = MainStoryBoard.instantiateViewController(withIdentifier: "PlaceOrder")
navigationController?.pushViewController(placeOrder, animated: true)
}
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return 35.0
}
func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
return 10.0
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return sections[(indexPath as NSIndexPath).section].collapsed! ? 0 : 70.0
}
func cellTextField(_with TextField: IQDropDownTextField, didSelectItem item: String?) {
switch TextField.tag {
case TextFieldTags.VisitType.rawValue:
visitType = item
break
case TextFieldTags.Industry.rawValue:
industry = item
break
case TextFieldTags.Source.rawValue:
source = item
break
case TextFieldTags.Status.rawValue:
status = item
break
case TextFieldTags.Country.rawValue:
country = item
break
case TextFieldTags.States.rawValue:
statesVal = item
break
default: break
}
}
func cellTextFieldDidEndEditing(_with textField: UITextField) {
switch textField.tag {
case TextFieldTags.ProspectName.rawValue:
prospectName = textField.text
break
case TextFieldTags.DissSummary.rawValue:
dissSummary = textField.text
break
case TextFieldTags.Requirements.rawValue:
requirements = textField.text
break
case TextFieldTags.AnticipatedDealValue.rawValue:
anticipatedDealValue = textField.text
break
case TextFieldTags.Probability.rawValue:
probability = textField.text
break
case TextFieldTags.NextStep.rawValue:
nextStep = textField.text
break
case TextFieldTags.Emp.rawValue:
emp = textField.text
break
case TextFieldTags.Rev.rawValue:
rev = textField.text
break
case TextFieldTags.AddressLine1.rawValue:
addressLine1 = textField.text
break
case TextFieldTags.AddressLine2.rawValue:
addressLine2 = textField.text
break
case TextFieldTags.City.rawValue:
cityVal = textField.text
break
case TextFieldTags.Mobile.rawValue:
mobile = textField.text
break
case TextFieldTags.Fax.rawValue:
fax = textField.text
break
case TextFieldTags.Zip.rawValue:
zip = textField.text
break
default: break
}
}
func stringFromDate(_ date:Date) -> String {
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd"
return formatter.string(from: date)
}
func cellTextFieldDate(_with textField: IQDropDownTextField, didSelect date: Date?) {
switch textField.tag {
case TextFieldTags.VisitDate.rawValue:
visitDate = stringFromDate(date!)
break
case TextFieldTags.FollowUpDate.rawValue:
followUpDate = stringFromDate(date!)
break
case TextFieldTags.ExpectedClosingDate.rawValue:
expectedClosingDate = stringFromDate(date!)
break
default: break
}
}
}
extension UIColor {
func getImage(size: CGSize) -> UIImage {
let renderer = UIGraphicsImageRenderer(size: size)
return renderer.image(actions: { rendererContext in
self.setFill()
rendererContext.fill(CGRect(x: 0, y: 0, width: size.width, height: size.height))
})
}}
2 ответа
При использовании UITableView with reusable cell identifier, вы должны хранить входные данные вашего UITextField или любые другие поля ввода, когда редактирование завершено в ваш источник данных, который вы используете для заполнения всех ячеек. Поскольку многоразовая ячейка сама управляет памятью для отрисовки всех ваших элементов управления, то нет никаких гарантий, что ваши данные останутся такими же, как и при прокрутке таблицы.
В этом if - else выражение
if dict["value"] as? String == "" {
cell.txtInput.setDate(Date(), animated: true)
} else{
cell.txtInput.selectedItem = dict["value"] as? String
}
Вы устанавливаете два разных элемента пользовательского интерфейса в зависимости от значения словаря. При повторном использовании ячеек эти состояния пользовательского интерфейса будут оставаться до тех пор, пока они не будут изменены в следующий раз.
Вы должны убедиться, что каждый элемент пользовательского интерфейса установлен в определенное состояние, чтобы избежать непредвиденного поведения, поэтому вам также нужно установить другой элемент пользовательского интерфейса. Например ([default value] это просто заполнитель).
if dict["value"] as? String == "" {
cell.txtInput.setDate(Date(), animated: true)
cell.txtInput.selectedItem = [default value]
} else{
cell.txtInput.setDate([default value], animated: [default value])
cell.txtInput.selectedItem = dict["value"] as? String
}
Если нет уникального default value Вы должны добавить свойства в источник данных, чтобы сохранить текущие состояния даты и выбранного элемента.
Что касается текстового поля, вы должны обновить источник данных после изменения текста, потому что в cellForRow текстовое поле всегда обновляется из источника данных.
И - как всегда - не использовать NS(Mutable)Array а также NS(Mutable)Dictionary в Свифте. Вы отбрасываете важную информацию о типах, и изменяемые типы коллекций не связаны с нативными типами Swift. Наконец вы можете удалить все break линии в switch выражения (кроме как после default). Они избыточны в Swift.