我有一个tableview，向用户显示自定义单元格，根据其选择，在其选择中更改text.label。我尝试了各种方法，但使用下面的代码列表并不起作用。我已经尝试了多种方法来完成这项工作。对此发生的情况是，如果我选择所呈现的1个单元格，则选择每10个单元格而不是仅选择一个单元格。我试着用：
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
var myDeckCards: DeckCards?
let listed = frc.objectAtIndexPath(indexPath) as! Cards
// check: is there already a DeckCards object for this Card and this Deck?
let deckCardsSet = listed.cardselections
println("The set of DeckCards for that Card is \(deckCardsSet.count)")
for eachDeckCard in listed.cardselections {
let myDeckCard = eachDeckCard as! DeckCards
if myDeckCard.cardsstored == passedDeckObject {
// There is already a DeckCard object for this Card and currentDeck
myDeckCards = eachDeckCard as? DeckCards
}
}
if myDeckCards == nil {
// There is no DeckCard object for this Card and currentDeck
// So create one...
myDeckCards = NSEntityDescription.insertNewObjectForEntityForName("DeckCards", inManagedObjectContext: managedObjectContext!) as? DeckCards
myDeckCards!.cardsselected = listed
myDeckCards!.cardsstored = passedDeckObject!
}
// your code to determine numberSelected here; I'll assume 2!
cardCount = myDeckCards!.numberSelected.integerValue
deckCardCount = myDeckCards!.deckcardCount.integerValue
cardCount = cardCount == 2 ? 0 : cardCount + 1
println(deckCardCount)
println(cardCount)
myDeckCards!.numberSelected = cardCount
let indexPathUpdate: AnyObject = frc.objectAtIndexPath(indexPath.row)
let currentCell = cardsListed.cellForRowAtIndexPath(indexPathUpdate) as! firstCardDetails?
//firstCardDetails customtableviewcellcontroller//
if currentCell!.selected == true {
if cardCount == 0 {
currentCell!.cardCounter.text = " "
} else {
if cardCount == 1 {
currentCell!.cardCounter.text = " 1"
} else {
if cardCount == 2 {
currentCell!.cardCounter.text = " 2"
}
}
}
}
}
根据要求，这是cellForRowAtIndexPath func：
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell: firstCardDetails = cardsListed.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! firstCardDetails
let listed = frc.objectAtIndexPath(indexPath) as! Cards
cell.cardName?.text = listed.name as String
if listed.cardType.isEqualToValue(1) {
cell.cardAttack?.text = "*"
} else {
if listed.cardType.isEqualToValue(2) {
cell.cardAttack?.text = "*"
} else {
cell.cardAttack?.text = listed.attack.stringValue
}
}
if listed.cardType.isEqualToNumber(1) {
cell.cardHealth?.text = "*"
} else {
if listed.cardType.isEqualToValue(2) {
cell.cardHealth?.text = "*"
} else {
cell.cardHealth?.text = listed.health.stringValue
}
}
cell.cardCost?.text = listed.cost.stringValue
if listed.cardType.isEqualToNumber(0) {
cell.cardType?.text = "Minion"
} else {
if listed.cardType.isEqualToNumber(1) {
cell.cardType?.text = "Spell"
} else {
if listed.cardType.isEqualToNumber(2) {
cell.cardType?.text = "Weapon"
}
}
}
if listed.rarity.isEqualToNumber(1) {
cell.rarityType?.text = "Legendary"
cell.rarityType?.textColor = UIColor.orangeColor()
} else {
if listed.rarity.isEqualToNumber(2) {
cell.rarityType?.text = "Epic"
cell.rarityType?.textColor = UIColor.purpleColor()
} else {
if listed.rarity.isEqualToNumber(3) {
cell.rarityType?.text = "Rare"
cell.rarityType?.textColor = UIColor.blueColor()
} else {
if listed.rarity.isEqualToNumber(4) {
cell.rarityType?.text = "Common"
cell.rarityType?.textColor = UIColor.grayColor()
} else {
if listed.rarity.isEqualToNumber(5) {
cell.rarityType?.text = "Starter"
cell.rarityType?.textColor = UIColor.blackColor()
}
}
}
}
}
if listed.cardClass.isEqualToNumber(1) {
cell.cardName?.textColor = UIColor(red: 0xbe/255, green: 0x23/255, blue: 0x0f/255, alpha: 1.0)
} else {
if listed.cardClass.isEqualToNumber(2) {
cell.cardName?.textColor = UIColor.blueColor()
} else {
if listed.cardClass.isEqualToNumber(3) {
cell.cardName?.textColor = UIColor(red: 0xE2/255, green: 0xA8/255, blue: 0x79/255, alpha: 1.0)
} else {
if listed.cardClass.isEqualToNumber(4) {
cell.cardName?.textColor = UIColor(red: 0xFF/255, green: 0xAA/255, blue: 0x00/255, alpha: 1.0)
} else {
if listed.cardClass.isEqualToNumber(5) {
cell.cardName?.textColor = UIColor(red: 0x22/255, green: 0x63/255, blue: 0x29/255, alpha: 1.0)
} else {
if listed.cardClass.isEqualToNumber(6) {
cell.cardName?.textColor = UIColor.brownColor()
} else {
if listed.cardClass.isEqualToNumber(7) {
cell.cardName?.textColor = UIColor(red: 0xBB/255, green: 0x76/255, blue: 0xE4/255, alpha: 1.0)
} else {
if listed.cardClass.isEqualToNumber(8) {
cell.cardName?.textColor = UIColor(red: 0x9E/255, green: 0xB5/255, blue: 0xFF/255, alpha: 1.0)
} else {
if listed.cardClass.isEqualToNumber(9) {
cell.cardName?.textColor = UIColor.grayColor()
} else {
if listed.cardClass.isEqualToNumber(10) {
cell.cardName?.textColor = UIColor.blackColor()
}
}
}
}
}
}
}
}
}
}
return cell
}
作为创建索引路径的方法，该索引路径被引用以定义实际被选中的单元格，但这并不完全正确。在线核心数据对象的在线覆盖很少。它在非核心数据时正常运行，但在核心数据时不正常。任何有关这方面的见解以及为什么我需要这样做都会受到赞赏，因为我仍在学习编程的一般细节！
答案 0 :(得分：0)
我认为这是细胞重用的一个问题 - 滚动屏幕的细胞被放置在一个队列中，并从队列中拉出来在屏幕上滚动的行。在单元格滚动到屏幕之前对单元格所做的任何更改都会（默认情况下）不会重置，因此当您为不同的行将它们出列时，这些更改仍会保留。
您需要确保cellForRowAtIndexPath代码进行相关更改。复制代码的关键位：
var myDeckCards: DeckCards?
var cardCount = 0
let listed = frc.objectAtIndexPath(indexPath) as! Cards
for eachDeckCard in listed.cardselections {
let myDeckCard = eachDeckCard as! DeckCards
if myDeckCard.cardsstored == passedDeckObject {
myDeckCards = eachDeckCard as? DeckCards
cardCount = myDeckCards!.numberSelected.integerValue
}
}
if cardCount == 0 {
cell.cardCounter.text = " "
} else {
if cardCount == 1 {
cell.cardCounter.text = " 1"
} else {
if cardCount == 2 {
cell.cardCounter.text = " 2"
}
}
}
从didSelectRowAtIndexPath到cellForRowAtIndexPath。
在didSelectRowAtIndexPath中，删除indexPathUpdate var，然后使用indexPath。
另外，请注意那些嵌套的if语句是switch / case的主要候选者。