我有一个tableView，当用户添加记录时填充它。此数据存储在实时Firebase中。向右滑动允许用户完成任务，并将记录从修复子项移到完整的子项。向左滑动可让用户删除该行。在这两种情况下，都将从表中删除该行。除第一行外，这对所有行均适用。当用户执行上述任一操作时，实时数据库将正确执行功能；但是，第一行保留数据。我想念什么？
override func viewDidLoad() {
super.viewDidLoad()
self.doListTableView.delegate = self
self.doListTableView.dataSource = self
//implement Google ADMobs
// In this case, we instantiate the banner with desired ad size.
bannerView = GADBannerView(adSize: kGADAdSizeBanner)
addBannerViewToView(bannerView)
bannerView.adUnitID = "ca-app-pub-3940256099942544/2934735716"
bannerView.rootViewController = self
bannerView.load(GADRequest())
bannerView.delegate = self
//get reference to firebase database
refRepairs = Database.database().reference().child("repairs").child(UserID!);
//observing the data changes
refRepairs!.observe(DataEventType.value, with: { (snapshot) in
//if the reference have some values
if snapshot.childrenCount > 0 {
//clearing the list
self.repairList.removeAll()
//iterating through all the values
for repairs in snapshot.children.allObjects as! [DataSnapshot] {
//getting values
let repairObject = repairs.value as? [String: AnyObject]
let brand = repairObject?["brand"]
let id = repairObject?["id"]
let categories = repairObject?["categories"]
let modelNumber = repairObject?["modelNumber"]
//creating artist object with model and fetched values
let repair = RepairModel(id: id as! String?, categories: categories as! String?, brand: brand as! String?, modelNumber: modelNumber as! String?)
self.repairList.append(repair)
}
//reloading the tableview
self.doListTableView.reloadData()
}
})
}
func tableView(_ tableView: UITableView, leadingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
let complete = UIContextualAction.init(style: .normal, title: "Complete") { (action, view, completion) in
let repairList = self.repairList[indexPath.row]
if let selectedRepairItem = repairList.id {
Database.database().reference().child("completed").child(self.UserID!).child(selectedRepairItem).setValue(["id": repairList.id, "brand": repairList.brand, "categories": repairList.categories, "modelNumber": repairList.modelNumber])
Database.database().reference().child("repairs").child(self.UserID!).child(selectedRepairItem).removeValue()
}
self.doListTableView.reloadData()
}
// complete.image = //... Add an image
complete.backgroundColor = #colorLiteral(red: 0.3411764801, green: 0.6235294342, blue: 0.1686274558, alpha: 1)
let action = UISwipeActionsConfiguration.init(actions: [complete])
action.performsFirstActionWithFullSwipe = true //... Full swipe support
return action
}
func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCell.EditingStyle, forRowAt indexPath: IndexPath) {
let repairList = self.repairList[indexPath.row]
if let selectedRepairItem = repairList.id {
Database.database().reference().child("repairs").child(UserID!).child(selectedRepairItem).removeValue()
self.doListTableView.reloadData()
}
}
我的工作非常顺利，但退出时遇到了问题。我已解决此问题，但现在我必须解决这个问题。不知道为什么会这样。预先感谢。
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
//print(repairList.count)
return (repairList.count)
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! RepairTableViewCell
let repair: RepairModel
repair = repairList[indexPath.row]
cell.labelBrand.text = repair.brand
cell.labelModelNumber.text = repair.modelNumber
return(cell)
}
这是我的模特：
class RepairModel {
var id: String?
var categories: String?
var brand: String?
var modelNumber: String?
init(id: String?, categories: String?, brand: String?, modelNumber: String?){
self.id = id
self.categories = categories
self.brand = brand
self.modelNumber = modelNumber
}
}