从其中的按钮中删除 tableview 单元格

Question

我希望我的 swift 代码从单元格内的按钮中删除 tableview 单元格。如果用户从标签包含 2 的单元格中点击删除按钮，它应该删除该单元格。所以你会看到 0,1,3,4 的单元格。删除按钮不应删除单元格底部的单元格。每个删除底部应该只删除该单元格。我想你会在类视图控制器中创建一个特定的函数来做到这一点。

import UIKit

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

    var numberOfRows = 5

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { numberOfRows }

    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat { 118 }

    var tableView = UITableView()
    var selectedIndexPath = IndexPath(row: 0, section: 0)

    override func viewDidLoad() {
        super.viewDidLoad()

        setTableVIew()
    }


    func setTableVIew(){
    
          
         
       
        
        let VCframe = view.frame
        let height = VCframe.height * 0.8
           
        let widthx = VCframe.width

   
             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, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
       let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! customtv
       //cell.textLabel?.text = "\(indexPath.row)"   // Don't Do this.
       cell.lbl.text = "\(indexPath.row)"            // Do this.

       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 deleteBTN : UIButton = {
        let press = UIButton(frame: CGRect(x: 200, y: 3, width: 65 , height: 50))
        press.backgroundColor = .systemBlue
        press.setTitle("DELETE", for: .normal)

        return press
    }()

 

    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(animated, animated: true)
        addSubview(backView)
        backView.addSubview(deleteBTN)
        backView.addSubview(lbl)
    }
}

Answer 1

而不是

var numberOfRows = 5

使用数组

var arr = [0,1,2,3,4]

然后

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])"  
   cell.deleteBTN.tag = indexPath.row
   cell.deleteBTN.addTarget(self, action:#selector(delete(_:)), for: .touchUpInside) 
   return cell
}
@objc func handleRegister(_ sender: UIButton){
     arr.remove(at:sender.tag)
     tableView.deleteRows(at:[Indexpath(row:sender.tag,section:0)],with:.none)
}