Swift你 Tableview application

application

 let vc = ViewController()
        let nav = UINavigationController(rootViewController: vc)
        self.window?.rootViewController=nav

默认控制器

import UIKit

class ViewController: UIViewController ,UITableViewDelegate,UITableViewDataSource{
    
    

    var table = UITableView()

    var Arr = NSArray()
    
    override func viewWillAppear(_ animated: Bool) {
        table.reloadData()
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        self.navigationItem.title="周考成绩单"
        
        table=UITableView(frame: UIScreen.main.bounds, style: .grouped)
        
        table.delegate=self
        
        table.dataSource=self
        
        self.view.addSubview(table)
        
        Arr = ["A","B","C","D","E","F"]
        
        let right = UIBarButtonItem(barButtonSystemItem: .add, target: self, action:#selector(abc))
        self.navigationItem.rightBarButtonItem=right
        
        
        
    }

    func numberOfSections(in tableView: UITableView) -> Int {
        return 6
    }
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return 3
    }
    func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
        var headers =  self.Arr
        return headers[section] as! String
       
        
        
    }
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        var cell:UITableViewCell! = tableView.dequeueReusableCell(withIdentifier: "cell")
        
        if cell == nil {
            cell = UITableViewCell(style: .value1, reuseIdentifier: "cell")
        }
        
        
        let Bun = UIButton(frame: CGRect(x: 300, y: 10, width: 100, height: 30))
        Bun.setTitle("录入分数", for: .normal)
        Bun.setTitleColor(.red, for: .normal)
        Bun.addTarget(self, action: #selector(TZhuan), for: .touchUpInside)
        cell.addSubview(Bun)
        
        let sd:AppDelegate = UIApplication.shared.delegate as! AppDelegate
        print(sd.str)
        
        
        if indexPath.section==0 {
            
                cell.textLabel?.text = sd.str
            
            
        }
        
        
        return cell
    }
    @objc func TZhuan(){
        let sco = ScoreViewController()
        
        self.navigationController?.pushViewController(sco, animated: true)
    }
    
    @objc func abc(){
        print("点击了添加按钮")
    }
    
    
    
}

跳转新页面

import UIKit

class ScoreViewController: UIViewController {
    var Language = UITextField()
    var  Math = UITextField()
    

    override func viewDidLoad() {
        super.viewDidLoad()
        
        self.view.backgroundColor=UIColor.white

       Language = UITextField(frame: CGRect(x: 100, y: 200, width: 240, height: 40))
        
        Language.backgroundColor=UIColor.lightGray
        
        Language.placeholder="语文"
        
        Math = UITextField(frame: CGRect(x: 100, y: 300, width: 240, height: 40))
        
        Math.backgroundColor=UIColor.lightGray
        
        Math.placeholder="数学"
        
        let English = UITextField(frame: CGRect(x: 100, y: 400, width: 240, height: 40))
        
        English.backgroundColor=UIColor.lightGray
        
        English.placeholder="英语"
        
        self.view.addSubview(Language)
        
        self.view.addSubview(Math)
        
        self.view.addSubview(English)
        
        let Save = UIButton(frame: CGRect(x: 80, y: 600, width: 100, height: 50))
        
        Save.setTitle("保存", for: .normal)
        
        Save.setTitleColor(.red, for: .normal)
        
        Save.addTarget(self, action: #selector(SaveBun), for:.touchUpInside)
        
        let Back = UIButton(frame: CGRect(x: 250, y: 600, width: 100, height: 50))
        
        Back.setTitle("返回", for: .normal)
        
        Back.setTitleColor(.red, for: .normal)
        
        self.view.addSubview(Save)
        
        self.view.addSubview(Back)
        
        Back.addTarget(self, action:#selector(BackBun), for: .touchUpInside)
        
        
        
    }
    @objc func BackBun(){
       // let vc = ViewController()
        
        
        self.navigationController?.popViewController(animated: true)
        
    }
    @objc func SaveBun(){
      //  let vc = ViewController()
        let sd:AppDelegate = UIApplication.shared.delegate as! AppDelegate
        sd.str = Language.text!
        
        
        self.navigationController?.popViewController(animated: true)
    }
    

    

}