将 tableview 单元格中的所有文本字段附加到数组

Question

我希望我的 swift 代码获取每个文本字段中的字符，然后在调用 func append 时将其转换为数组。您也可以在 func 中看到注释。调用 func 时，用户将获取 class customtv 中的所有文本字段，并将它们添加到空数组中。假设每个文本字段都包含一个 int.

import UIKit

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
    
    var empty = [Int]()
    var appended = UIButton()
    var tableView = UITableView()
    
    var arr = [0,1,2,3,4]
    @objc func append(){
        ///append all of the textfiels into array empty. All of the textfiels are in customtv
        
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
         
             appended.backgroundColor = .orange
             view.addSubview(appended)
             
             
             
             let VCframe = view.frame
             let height = VCframe.height * 0.8
             let height2 = VCframe.height * 0.2
             let widthx = VCframe.width
             appended.frame = CGRect(x: 0, y: height, width: widthx, height: height2)
             appended.addTarget(self, action: #selector(append), for: .touchDown)
             tableView.frame = CGRect(x: 10, y: 0, width: widthx - 20, height: height)
             
             tableView.delegate = self
             tableView.dataSource = self
             view.addSubview(tableView)
             
             
             tableView.register(customtv.self, forCellReuseIdentifier: "cell")
    }

 
    
    
    
    
    
    
    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat { 118 }
    
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return arr.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! customtv
        cell.lbl.text = "\(arr[indexPath.row])"
        return cell
    }
    
    
    
    
}
class customtv: UITableViewCell {
    lazy var backView : UIView = {
        let view = UIView(frame: CGRect(x: 10, y: 6, width: self.frame.width  , height: 110))
        view.backgroundColor = .green
        print(self.frame.width)
        return view
    }()
    
    
    
    override func layoutSubviews() {
        backView.clipsToBounds = true
        backView.frame =  CGRect(x: 0, y: 6, width: bounds.maxX  , height: 110)
        
        
    }
    lazy var lbl : UILabel = {
        let press = UILabel(frame: CGRect(x: 0, y: 3, width: 120 , height: 50))
        press.backgroundColor = .yellow
        press.text = String("1")
        
        return press
    }()
    
    lazy var txtField : UITextField = {
        let press = UITextField(frame: CGRect(x: 100, y: 3, width: 120 , height: 50))

        press.backgroundColor = .white
        press.textAlignment = .center
        return press
    }()
    
    
    
    
    
    
    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(animated, animated: true)
        addSubview(backView)
        backView.addSubview(lbl)
        backView.addSubview(txtField)
    }
}

Answer 1

请试试这个。这适用于 Swift 5.

    func append() {            
        let arrayTextFields = (0..<arr.count).compactMap { (tableView.cellForRow(at: IndexPath(row: [=10=], section: 0)) as? customtv)?.txtField }
    }

如果你想从文本字段中获取 Int 值，你可以添加这个。

       let arrayValues = arrayTextFields.compactMap { Int([=11=].text!) }

将 tableview 单元格中的所有文本字段附加到数组

append all textfields in tableview cells to array

arrays

append

uitextfield

swift