的UITableView选择的onLoad
问题描述:
我有这样的tableView:的UITableView选择的onLoad
和它的伟大工程,我用这个来过滤从HTTP请求中接收到的数据。我想在更改视图时保存选择并在我返回时重置。我尝试过(见代码评论),但我没有错误。 有人可以帮我解释一下我该怎么做吗?
这是我的代码:
// 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
}
}
,这是细胞代码:
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)
}
}
我真的不知道该怎么做是正确的..
谢谢提前。
答
你的方法应该是这样的。
- 以一个阵列[说boolArr]等于
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int)
此数组[boolArr]使用应该包含你布尔按钮的状态的变量number
的计数IE中。如果他们打开或关闭。
当调用
viewwilldisappear
时,保存这个[boolArr]。加载视图中相同数组[boolArr]中的数据将出现并在
cellForRowAtIndexPath
中进一步使用。当在
cellForRowAtIndexPath
中加载数据时,为nil和empty添加必要的检查。
你有问题不清楚。您是否尝试在视图处于活动状态时保存数组并从同一数组中加载数据。 –
@UmarFarooque如果你看到我以这种方式尝试的单元代码,但我有零错误,我想我需要保存和值的数组,但我不知道如何重新设置负载值,请你解释一下? – Jigen