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我有這樣的tableView：的UITableView選擇的onLoad
和它的偉大工程，我用這個來過濾從HTTP請求中接收到的數據。我想在更改視圖時保存選擇並在我返回時重置。我嘗試過（見代碼評論），但我沒有錯誤。 有人可以幫我解釋一下我該怎麼做嗎？
這是我的代碼：
// MARK: TableView
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return names.count
}
// Customize header
override func tableView(tableView: UITableView, viewForHeaderInSection section: Int) -> UIView {
let view: UIView = UIView(frame: CGRectMake(0, 0, tableView.frame.size.width, 18))
let label: UILabel = UILabel(frame: CGRectMake(10, 5, tableView.frame.size.width, 18))
label.font = UIFont.boldSystemFontOfSize(18)
let string: String = names[section]
label.text = string
label.textColor = .redColor()
label.textAlignment = NSTextAlignment.Left
view.addSubview(label)
view.backgroundColor = ColorHex().UIColorFromHex(0xEEEEEE)
return view
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
var number: Int!
switch section {
case 0:
number = 1 //reset filter
break
case 1:
number = statusesDict.count
break
case 2:
number = queuesDict.count
break
case 3:
number = typesDict.count
break
case 4:
number = severitiesDict.count
default:
break
}
return number
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
{
let cell: TicketsFilterCell! = tableView.dequeueReusableCellWithIdentifier("cellTicketFilter", forIndexPath: indexPath) as! TicketsFilterCell
cell.delegate = self
if self.selectedIndexPathArray.contains(indexPath) {
cell.switchFilter.setOn(true, animated: false)
} else {
cell.switchFilter.setOn(false, animated: false)
}
if(indexPath.section == 0) {
let text = "Resetta tutti i filtri"
cell.textFilter.text = text
} else if(indexPath.section == 1) {
let text = statusesDict[indexPath.row]?.capitalizedString
cell.textFilter.text = text
} else if(indexPath.section == 2) {
let text = queuesDict[indexPath.row]?.capitalizedString
cell.textFilter.text = text
} else if(indexPath.section == 3) {
let text = typesDict[indexPath.row]?.capitalizedString
cell.textFilter.text = text
} else if (indexPath.section == 4) {
let text = severitiesDict[indexPath.row]?.capitalizedString
cell.textFilter.text = text
}
return cell
}
//change value to true for edit tableView rows
override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool
{
return false
}
//show selection
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath)
{
if let index = self.selectedIndexPathArray.indexOf(indexPath) {
self.selectedIndexPathArray.removeAtIndex(index)
} else {
self.selectedIndexPathArray.append(indexPath)
}
let cell = self.tableview.cellForRowAtIndexPath(indexPath) as! TicketsFilterCell
cell.toggleSwitch()
}
func switchButtonTapped(WithStatus status: Bool, ForCell cell: TicketsFilterCell) {
let indexPath = self.tableview .indexPathForCell(cell)
if (status == true) {
if self.selectedIndexPathArray.indexOf(indexPath!) == nil {
self.selectedIndexPathArray.append(indexPath!)
}
//update dictSelected
switch (self.tableview.indexPathForCell(cell)!.section) {
case 0:
print("section 0, reset all filter")
self.dictSelectedReset.updateValue(true, forKey: String((indexPath?.row)! + 1))
break
case 1:
//take data from status
print("section 1, value -> \(statusesDict[(indexPath?.row)!]) for row \(String(indexPath!.row))")
self.dictSelectedStatus.updateValue(statusesDict[(indexPath?.row)!]!, forKey: String((indexPath?.row)! + 1))
break
case 2:
//take data from queue
print("section 2, value -> \(queuesDict[(indexPath?.row)!]) for row \(String(indexPath!.row))")
self.dictSelectedQueue.updateValue(queuesDict[(indexPath?.row)!]!, forKey: String((indexPath?.row)! + 1))
break
case 3:
//take data from type
print("section 3, value -> \(typesDict[(indexPath?.row)!]) for row \(String(indexPath!.row))")
self.dictSelectedType.updateValue(typesDict[(indexPath?.row)!]!, forKey: String((indexPath?.row)! + 1))
break
case 4:
//take data from severity
print("section 4, value in -> \(severitiesDict[(indexPath?.row)!]) for row \(String(indexPath!.row))")
self.dictSelectedSeverity.updateValue(severitiesDict[(indexPath?.row)!]!, forKey: String((indexPath?.row)! + 1))
break
default:
break
}
}
else {
if let index = self.selectedIndexPathArray.indexOf(indexPath!) {
self.selectedIndexPathArray.removeAtIndex(index)
}
//update dictSelected
//if exist, delete re-tapped
switch (self.tableview.indexPathForCell(cell)!.section) {
case 0:
if (dictSelectedReset.keys.contains(String((indexPath?.row)! + 1))) {
dictSelectedReset.removeValueForKey(String((indexPath?.row)! + 1))
}
break
case 1:
if (dictSelectedStatus.keys.contains(String((indexPath?.row)! + 1))) {
dictSelectedStatus.removeValueForKey(String((indexPath?.row)! + 1))
}
break
case 2:
if (dictSelectedQueue.keys.contains(String((indexPath?.row)! + 1))) {
dictSelectedQueue.removeValueForKey(String((indexPath?.row)! + 1))
}
break
case 3:
if (dictSelectedType.keys.contains(String((indexPath?.row)! + 1))) {
dictSelectedType.removeValueForKey(String((indexPath?.row)! + 1))
}
break
case 4:
if (dictSelectedSeverity.keys.contains(String((indexPath?.row)! + 1))) {
dictSelectedSeverity.removeValueForKey(String((indexPath?.row)! + 1))
}
break
default:
break
}
}
，這是細胞代碼：
protocol CellProtocol : class {
func switchButtonTapped(WithStatus status : Bool, ForCell cell : TicketsFilterCell)
}
class TicketsFilterCell: UITableViewCell {
@IBOutlet var textFilter: UILabel!
@IBOutlet weak var switchFilter: UISwitch!
weak var delegate : CellProtocol!
class var reuseIdentifier: String? {
get {
return "TicketsFilterCell"
}
}
override func awakeFromNib() {
super.awakeFromNib()
}
// Uncomment here to show switches that are preselected on load
// override func setSelected(selected: Bool, animated: Bool) {
// super.setSelected(selected, animated: animated)
// self.delegate .switchButtonTapped(WithStatus: selected, ForCell: self)
// }
@IBAction func switchTapped(sender: UISwitch) {
self.delegate.switchButtonTapped(WithStatus: sender.on, ForCell: self)
}
// select UISwitch and change status
func toggleSwitch() {
if self.switchFilter.on {
self.switchFilter .setOn(false, animated: true)
} else {
self.switchFilter .setOn(true, animated: true)
}
self.delegate.switchButtonTapped(WithStatus: self.switchFilter.on, ForCell: self)
}
}
我真的不知道該怎麼做是正確的..
謝謝提前。
你有問題不清楚。您是否嘗試在視圖處於活動狀態時保存數組並從同一數組中加載數據。 –
@UmarFarooque如果你看到我以這種方式嘗試的單元代碼，但我有零錯誤，我想我需要保存和值的數組，但我不知道如何重新設置負載值，請你解釋一下？ – Jigen