0
我只是想知道如何通过.observeEventType - 和我拥有的字典数组来更新Swift中的显示数据。我有一个表格视图，带有删除按钮功能。但是，我只能从firebase中删除值，而不是字典数组。我有observeEventType在我viewDidLoad中，让我的数据是这样的：Firebase/Swift更新表视图的删除值？
var dict = [String:String]()
dict["data"] = snapshot.value!["data"] as? String
array.append(dict)
然而，在numberOfRowsInSection我有array.count，我得到一个错误的数是错误的。我将如何解决这个问题？从字典数组中删除值，完成整个数据并显示新数据，或者我该怎么做？
顺便说一句：当应用程序崩溃，我再次构建 - 删除的值不见了，数据显示正常 - 但是，我只是想删除部分运行平稳。
在此先感谢。
所有代码：
func LoadValues() {
var curID = FIRAuth.auth()?.currentUser?.uid
ref.child("Users").child(curID!).child("Prices").observeEventType(.Value) { (snapshot:FIRDataSnapshot) in
if let PermPrice = snapshot.value!["PermanentPrice"] as? Int {
self.dict2["PermanentPrice"] = String(PermPrice)
}
if let Price24 = snapshot.value!["24hours"] as? Int {
self.dict2["24hours"] = String(Price24)
}
if let Price12 = snapshot.value!["12hours"] as? Int {
self.dict2["12hours"] = String(Price12)
}
if let Price6 = snapshot.value!["6hours"] as? Int {
self.dict2["6hours"] = String(Price6)
}
if let Price2 = snapshot.value!["2hours"] as? Int {
self.dict2["2hours"] = String(Price2)
}
self.allTiers.append(self.dict2)
}
}
上面的代码是价格等级系统中，允许用户5个不同的价格层之间进行选择。显示在表格视图中。
而且这是在实现代码如下显示：
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
if indexPath.row == 0 {
let cell1 = tableView.dequeueReusableCellWithIdentifier("firstCell", forIndexPath: indexPath) as! TierCell1
cell1.deleteButton1.tag = 0
cell1.deleteButton1.addTarget(self, action: "DeleteTier:", forControlEvents: .TouchUpInside)
//let cell1 = tableView.dequeueReusableCellWithIdentifier("firstCell", forIndexPath: indexPath) as! TierCell1
//set the data here
if allTiers[0]["PermanentPrice"] != nil {
cell1.price1.text = "$" + String(allTiers[0]["PermanentPrice"]!)
cell1.text1.text = "Permanent"
PermTextTier = true
} else if allTiers[0]["24hours"] != nil {
cell1.price1.text = "$" + String(allTiers[0]["24hours"]!)
cell1.text1.text = "24 hours"
TextTier24 = true
} else if allTiers[0]["12hours"] != nil {
cell1.price1.text = "$" + String(allTiers[0]["12hours"]!)
cell1.text1.text = "12 hours"
TextTier12 = true
} else if allTiers[0]["6hours"] != nil {
cell1.price1.text = "$" + String(allTiers[0]["6hours"]!)
cell1.text1.text = "6 hours"
TextTier6 = true
} else if allTiers[0]["2hours"] != nil {
cell1.price1.text = "$" + String(allTiers[0]["2hours"]!)
cell1.text1.text = "2 hours"
TextTier2 = true
}
//cell1.text1.text = String(allTiers[0]["PermanentPrice"]!)
return cell1
}
if indexPath.row == 1 {
//let cell2: TierCell2 = TierCell2(style: UITableViewCellStyle.Default, reuseIdentifier: "secondCell") as! TierCell2
//set the data here
let cell2 = tableView.dequeueReusableCellWithIdentifier("secondCell", forIndexPath: indexPath) as! TierCell2
cell2.deleteButton2.tag = 1
cell2.deleteButton2.addTarget(self, action: "DeleteTier:", forControlEvents: .TouchUpInside)
if allTiers[0]["24hours"] != nil && TextTier24 == false {
cell2.price2.text = "$" + String(allTiers[0]["24hours"]!)
cell2.text2.text = "24 hours"
TextTier24 = true
} else if allTiers[0]["12hours"] != nil && TextTier12 == false {
cell2.price2.text = "$" + String(allTiers[0]["12hours"]!)
cell2.text2.text = "12 hours"
TextTier12 = true
} else if allTiers[0]["6hours"] != nil && TextTier6 == false {
cell2.price2.text = "$" + String(allTiers[0]["6hours"]!)
cell2.text2.text = "6 hours"
TextTier6 = true
} else if allTiers[0]["2hours"] != nil && TextTier2 == false {
cell2.price2.text = "$" + String(allTiers[0]["2hours"]!)
cell2.text2.text = "2 hours"
TextTier2 = true
}
return cell2
}
if indexPath.row == 2 {
//let cell2: TierCell2 = TierCell2(style: UITableViewCellStyle.Default, reuseIdentifier: "secondCell") as! TierCell2
//set the data here
let cell3 = tableView.dequeueReusableCellWithIdentifier("thirdCell", forIndexPath: indexPath) as! TierCell3
cell3.deleteButton3.tag = 2
cell3.deleteButton3.addTarget(self, action: "DeleteTier:", forControlEvents: .TouchUpInside)
if allTiers[0]["12hours"] != nil && TextTier12 == false {
cell3.price3.text = "$" + String(allTiers[0]["12hours"]!)
cell3.text3.text = "12 hours"
TextTier12 = true
} else if allTiers[0]["6hours"] != nil && TextTier6 == false {
cell3.price3.text = "$" + String(allTiers[0]["6hours"]!)
cell3.text3.text = "6 hours"
TextTier6 = true
} else if allTiers[0]["2hours"] != nil && TextTier2 == false {
cell3.price3.text = "$" + String(allTiers[0]["2hours"]!)
cell3.text3.text = "2 hours"
TextTier2 = true
}
return cell3
}
if indexPath.row == 3 {
//let cell2: TierCell2 = TierCell2(style: UITableViewCellStyle.Default, reuseIdentifier: "secondCell") as! TierCell2
//set the data here
let cell4 = tableView.dequeueReusableCellWithIdentifier("fourthCell", forIndexPath: indexPath) as! TierCell4
cell4.deleteButton4.tag = 3
cell4.deleteButton4.addTarget(self, action: "DeleteTier:", forControlEvents: .TouchUpInside)
if allTiers[0]["6hours"] != nil && TextTier6 == false {
cell4.price4.text = "$" + String(allTiers[0]["6hours"]!)
cell4.text4.text = "6 hours"
TextTier6 = true
} else if allTiers[0]["2hours"] != nil && TextTier2 == false {
cell4.price4.text = "$" + String(allTiers[0]["2hours"]!)
cell4.text4.text = "2 hours"
TextTier2 = true
}
return cell4
}
if indexPath.row == 4 {
//let cell2: TierCell2 = TierCell2(style: UITableViewCellStyle.Default, reuseIdentifier: "secondCell") as! TierCell2
//set the data here
let cell5 = tableView.dequeueReusableCellWithIdentifier("fifthCell", forIndexPath: indexPath) as! TierCell5
cell5.deleteButton5.tag = 4
cell5.deleteButton5.addTarget(self, action: "DeleteTier:", forControlEvents: .TouchUpInside)
if allTiers[0]["2hours"] != nil && TextTier2 == false {
cell5.price5.text = "$" + String(allTiers[0]["2hours"]!)
cell5.text5.text = "2 hours"
TextTier2 = true
}
return cell5
} else {
let cell: UITableViewCell = UITableViewCell(style: UITableViewCellStyle.Default, reuseIdentifier: "none")
return cell
}
}
这段代码看起来相当凌乱，但我只是想显示在顶部的higest价格层，在任何时间。当我删除一个值时，这不会更新。
你能添加检索数据所涉及的火力召唤的tableview？ – adolfosrs
@adolfosrs我相信问题在于cellForRowAtIndexPath，但我想不出另一种方式去做它.. – askaale
你碰巧在这里看到一个解决方案，@adolfosrs？ – askaale