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Ich habe eine Tabelle mit einer Liste von TextField in jeder Zelle und ich benutze die UITextFieldDelegate. Der Benutzer kann schreiben, dass er will und Zeile hinzufügen.Tabellenansicht Zeile nach dem Neuladen von Daten Endlosschleife auswählen
Das Problem ist, dass der Tableview neu geladen werden muss, um das Ergebnis zu dem Benutzer zu zeigen, aber es die becomeFirstResponder brechen() ...
Ich versuche habe diese Lösung nach self.tableView.reloadData():
let cell = self.tableView.dequeueReusableCell(withIdentifier: Cell.identifier, for: IndexPath(item: 0, section: 0)) as! Cell
textFieldDidBeginEditing(cell.textFiedl)
let cell = tableView(self.tableView, cellForRowAt: indexPath) as! CellItemOptions
cell.nameOptionsItem.becomeFirstResponder()
let cell = self.tableView.cellForRow(at: indexPath) as! CellItemOptions
cell.nameOptionsItem.becomeFirstResponder()
Aber es funktioniert nicht.
Vielen Dank für Ihre Hilfe!
EDIT: mein Code
import UIKit
class OptionsItemViewController: UIViewController, UITableViewDataSource, UITableViewDelegate, UITextFieldDelegate {
let context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext
var textFiedlDelegate: UITextField? = nil
var categorySelected: Category?
var options: [String] = []
var nameOptions: [String] = []
var cellSelected: Int = 0
var viewHeight: CGFloat = 0
var selectedRow: IndexPath? = nil
var tableviewNeedToReload: Bool = false
@IBOutlet weak var tableView: UITableView!
@IBOutlet weak var keyboardAlwaysShow: UITextField!
@IBOutlet weak var newFeatureButton: UIBarButtonItem!
private let db = DataBase()
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.dataSource = self
self.textFiedlDelegate?.delegate = self
self.title = categorySelected!.name
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillHide), name: NSNotification.Name.UIKeyboardWillHide, object: nil)
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
db.getItemOptions(predicateFormat: "id == \(self.categorySelected!.id)", completion: { results in
self.categorySelected = results.first!
self.options = self.categorySelected!.options as! [String]
DispatchQueue.main.async {
self.tableView.reloadData()
}
})
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(false)
self.viewHeight = self.view.frame.size.height
}
override func viewDidDisappear(_ animated: Bool) {
super.viewDidDisappear(false)
var index = 0
while index < self.options.count {
if self.options[index] != "" {
index += 1
} else {
self.options.remove(at: index)
}
db.setCategoryOptions(category: self.categorySelected!, options: self.options, index: cellSelected)
}
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
self.view.endEditing(true)
}
@IBAction func newFeature(_ sender: Any) {
if self.options.last != "" {
let indexPath: IndexPath = IndexPath(row: self.options.count, section: 0)
self.options.append("")
self.tableView.reloadData()
let cell = tableView(self.tableView, cellForRowAt: indexPath) as! CellItemOptions
cell.nameOptionsItem.becomeFirstResponder()
}
}
// MARK: - TableView Functions
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return options.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let option = options[indexPath.row]
let cell = tableView.dequeueReusableCell(withIdentifier: CellItemOptions.identifier, for: indexPath) as! CellItemOptions
cell.nameOptionsItem.delegate = self
cell.configureCell(with: option)
return cell
}
func textFieldDidBeginEditing(_ textField: UITextField) {
self.cellSelected = options.index(of: textField.text!)!
let indexPath: IndexPath = IndexPath(row: self.cellSelected, section: 0)
self.tableView.reloadData()
let cell = self.tableView.cellForRow(at: indexPath) as! CellItemOptions
cell.nameOptionsItem.becomeFirstResponder()
}
func textFieldDidEndEditing(_ textField: UITextField) {
if textField.text! == "" {
if self.options[cellSelected] != "" {
db.setRemoveDetailsItem(category: self.categorySelected!, index: cellSelected)
}
self.options.remove(at: cellSelected)
} else {
self.options[cellSelected] = "\(textField.text!)"
db.setAddDetailsItem(category: self.categorySelected!, index: cellSelected)
}
db.setCategoryOptions(category: self.categorySelected!, options: self.options, index: cellSelected)
}
// MARK: - Keyboard
func keyboardWillShow(_ notification: NSNotification) {
if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
if self.view.frame.size.height == self.viewHeight {
self.view.frame.size.height -= keyboardSize.height
}
}
}
func keyboardWillHide(_ notification: NSNotification) {
if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
if self.view.frame.origin.y != self.viewHeight {
self.view.frame.size.height += keyboardSize.height
}
}
}
}
class CellItemOptions: UITableViewCell {
static let identifier = "OptionsItemCell"
@IBOutlet weak var nameOptionsItem: UITextField!
private let tableView = OptionsItemViewController()
func configureCell(with cell: String) {
nameOptionsItem.text = cell
}
}
Das Problem mit diesem Code ist der Speicher, increse und die CPU um 100% verwendet wird !! Ich denke, dass ich eine unendliche Anweisung erstellt habe, aber ich finde es nicht ...
Danke!