Ios 是否在UITableViewCell中进行内联编辑？

我正在尝试构建一个使用UITableView和UITableView单元格的应用程序

我希望用户点击Add按钮将项目添加到TableView，而无需调用新窗口或警报弹出窗口。我还希望用户点击单元格编辑其值，然后保存它

我正在努力找到最好的方法。根据苹果公司关于UITableViewCell的文档，这似乎是不可能的

---

有更好的方法吗？

这里是一个非常基本的例子

在情节提要中，添加嵌入到

UINavigationController

中的

UITableViewController

。将表视图控制器的自定义类设置为

SampleTableViewController

。这就是运行此程序所需的全部操作

桌子一开始是空的。点击导航栏上的Add（“+”）按钮，将新项添加到数据数组并重新加载表

编辑文本字段时，文本将通过“回调”闭包传递回控制器，在这里我们用新字符串更新数据数组

还有一个“完成”按钮，点击它将简单地

将数据数组打印到调试控制台，以便我们可以看到更改。这就是你要做的事情，比如保存用户输入的数据（或者你计划用它做的任何事情）


SampleTableViewController类

class SampleTableViewController: UITableViewController {
    
    var myData: [String] = []
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // cells will have text fields, so we want to be able to
        //  dismiss the keyboard by scrolling the table
        tableView.keyboardDismissMode = .onDrag
        // register our custom cell
        tableView.register(SampleTextFieldCell.self, forCellReuseIdentifier: "cell")
        // put system Add "+" button and system "Done" button
        //  on right side of the navigation bar
        let addBtn = UIBarButtonItem(barButtonSystemItem: .add, target: self, action: #selector(self.addButtonTapped))
        let doneBtn = UIBarButtonItem(barButtonSystemItem: .done, target: self, action: #selector(self.doneButtonTapped))
        navigationItem.rightBarButtonItems = [doneBtn, addBtn]
    }
    @objc func addButtonTapped() -> Void {
        // add a new element to data array
        myData.append("")
        // reload the table
        tableView.reloadData()
    }
    @objc func doneButtonTapped() -> Void {
        // do something with the added / edited items
        //  maybe save then to a database?
        // for now, just print the data array to the debug console
        print(myData)
    }
    override func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }
    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return myData.count
    }
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! SampleTextFieldCell
        cell.theTextField.text = myData[indexPath.row]
        // set the "callback" closure so we can save the text as its being edited
        cell.callback = { str in
            // update data array when text in cell is edited
            self.myData[indexPath.row] = str
        }
        return cell
    }
}

class SampleTextFieldCell: UITableViewCell {
    
    let theTextField = UITextField()
    
    // closure used to tell the controller that the text field has been edited
    var callback: ((String) ->())?
    
    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        commonInit()
    }
    required init?(coder: NSCoder) {
        super.init(coder: coder)
        commonInit()
    }
    func commonInit() -> Void {
        theTextField.borderStyle = .roundedRect
        theTextField.placeholder = "Enter new item..."
        theTextField.translatesAutoresizingMaskIntoConstraints = false
        contentView.addSubview(theTextField)
        let g = contentView.layoutMarginsGuide
        NSLayoutConstraint.activate([
            theTextField.topAnchor.constraint(equalTo: g.topAnchor, constant: 0.0),
            theTextField.leadingAnchor.constraint(equalTo: g.leadingAnchor, constant: 0.0),
            theTextField.trailingAnchor.constraint(equalTo: g.trailingAnchor, constant: 0.0),
            theTextField.bottomAnchor.constraint(equalTo: g.bottomAnchor, constant: 0.0),
        ])
        theTextField.addTarget(self, action: #selector(self.textFieldEdited(_:)), for: .editingChanged)
    }
    @objc func textFieldEdited(_ textField: UITextField) -> Void {
        // send newly edited text back to the controller
        callback?(textField.text ?? "")
    }
}


SampleTextFieldCell类

class SampleTableViewController: UITableViewController {
    
    var myData: [String] = []
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // cells will have text fields, so we want to be able to
        //  dismiss the keyboard by scrolling the table
        tableView.keyboardDismissMode = .onDrag
        // register our custom cell
        tableView.register(SampleTextFieldCell.self, forCellReuseIdentifier: "cell")
        // put system Add "+" button and system "Done" button
        //  on right side of the navigation bar
        let addBtn = UIBarButtonItem(barButtonSystemItem: .add, target: self, action: #selector(self.addButtonTapped))
        let doneBtn = UIBarButtonItem(barButtonSystemItem: .done, target: self, action: #selector(self.doneButtonTapped))
        navigationItem.rightBarButtonItems = [doneBtn, addBtn]
    }
    @objc func addButtonTapped() -> Void {
        // add a new element to data array
        myData.append("")
        // reload the table
        tableView.reloadData()
    }
    @objc func doneButtonTapped() -> Void {
        // do something with the added / edited items
        //  maybe save then to a database?
        // for now, just print the data array to the debug console
        print(myData)
    }
    override func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }
    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return myData.count
    }
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! SampleTextFieldCell
        cell.theTextField.text = myData[indexPath.row]
        // set the "callback" closure so we can save the text as its being edited
        cell.callback = { str in
            // update data array when text in cell is edited
            self.myData[indexPath.row] = str
        }
        return cell
    }
}

class SampleTextFieldCell: UITableViewCell {
    
    let theTextField = UITextField()
    
    // closure used to tell the controller that the text field has been edited
    var callback: ((String) ->())?
    
    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        commonInit()
    }
    required init?(coder: NSCoder) {
        super.init(coder: coder)
        commonInit()
    }
    func commonInit() -> Void {
        theTextField.borderStyle = .roundedRect
        theTextField.placeholder = "Enter new item..."
        theTextField.translatesAutoresizingMaskIntoConstraints = false
        contentView.addSubview(theTextField)
        let g = contentView.layoutMarginsGuide
        NSLayoutConstraint.activate([
            theTextField.topAnchor.constraint(equalTo: g.topAnchor, constant: 0.0),
            theTextField.leadingAnchor.constraint(equalTo: g.leadingAnchor, constant: 0.0),
            theTextField.trailingAnchor.constraint(equalTo: g.trailingAnchor, constant: 0.0),
            theTextField.bottomAnchor.constraint(equalTo: g.bottomAnchor, constant: 0.0),
        ])
        theTextField.addTarget(self, action: #selector(self.textFieldEdited(_:)), for: .editingChanged)
    }
    @objc func textFieldEdited(_ textField: UITextField) -> Void {
        // send newly edited text back to the controller
        callback?(textField.text ?? "")
    }
}

你在问如何做一大堆不同的事情。到目前为止你做了什么？可以从字符串数组中显示表格吗？你能创建一个连接到动作函数的“添加”按钮吗？你能创建一个带有文本字段的自定义单元格吗？现在，我有一个桌面视图，上面有一个编辑和添加按钮。单击“添加”后，将弹出一个警告框，要求我输入项目。我还没有编写任何逻辑代码来显示我添加到TableView中的项目，因为我不想坚持这种设计。@Caps6160-如果这回答了您的问题，请确保将其标记为已接受，以方便其他可能遇到它的人。