2电商系统iOS-简单的注册登陆

没啥好写的基于第一节的内容添加用户名框，密码框，登陆按钮，以及简单的登陆判断。

//
//  LoginViewController.swift
//  cyshop
//
//  Created by duan on 2022/10/7.
//

import UIKit

class LoginViewController: UIViewController {

    var deviceSize = UIScreen.main.bounds;
    
    var userNameTextField = UITextField();
    var passWorldTextField = UITextField();

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        
        self.view.backgroundColor = UIColor.orange;
        
        userNameTextField = addUserNameView();
        passWorldTextField = addPassWorldView();
        addSubmitButton();
    }
    
    
    func addUserNameView()->UITextField{
        
        let view = UIView(frame: CGRect.init(x: (deviceSize.width-250)*0.5, y: (deviceSize.height)*0.5-100, width: 250, height: 40));
        
        //view.backgroundColor = UIColor.blue;
        
        let label = UILabel(frame: CGRect.init(x: 0, y: 0, width: 40, height: 40));
        label.text = "账号:";
        
        
        let userNameTextField = UITextField(frame: CGRect.init(x: 50, y: 0, width: 200, height: 40));
        userNameTextField.textColor = UIColor.black;
        userNameTextField.borderStyle = UITextField.BorderStyle.roundedRect;
        
        view.addSubview(label);
        view.addSubview(userNameTextField);
        
        
        
        self.view.addSubview(view);
        
        return userNameTextField;
        
    }
    
    
    func addPassWorldView()->UITextField{
        
        let view = UIView(frame: CGRect.init(x:(deviceSize.width-250)*0.5, y: (deviceSize.height)*0.5-50, width: 250, height: 40));
        
        //view.backgroundColor = UIColor.blue;
        
        let label = UILabel(frame: CGRect.init(x: 0, y: 0, width: 40, height: 40));
        label.text = "密码:";
        
        
        let passWorldTextField = UITextField(frame: CGRect.init(x: 50, y: 0, width: 200, height: 40));
        passWorldTextField.textColor = UIColor.black;
        passWorldTextField.borderStyle = UITextField.BorderStyle.roundedRect;
        
        view.addSubview(label);
        view.addSubview(passWorldTextField);
        
        
        self.view.addSubview(view);
        
        return passWorldTextField;
        
    }
    
    func addSubmitButton(){
        //创建圆角按钮
        let button: UIButton = UIButton(type: .roundedRect);
        button.frame = CGRectMake((deviceSize.width-250)*0.5,(deviceSize.height)*0.5,250,40);
        button.backgroundColor = UIColor.black;
        button.setTitle("登陆", for: .normal);
        button.setTitleColor(UIColor.white, for: .normal);
        button.layer.cornerRadius = 8;
        button.addTarget(self, action: #selector(loginPressed), for: .touchUpInside);
        
        self.view.addSubview(button);
        
    }
    
    // 登陆按钮点击事件
    @objc private func loginPressed() {
        
        let userName = NSString(string: userNameTextField.text ?? "");
        
        let password = NSString(string: passWorldTextField.text ?? "");
        
        var message = "";
        
        if(userName == "admin" && password == "111"){
            message = "登陆成功"
        }else{
            message = "登陆失败"
        }
        
        
        let alertController = UIAlertController(title: message,message: nil, preferredStyle: .alert)
        let okAction = UIAlertAction(title: "确定", style: .cancel, handler: nil)
                alertController.addAction(okAction)
        self.present(alertController, animated: true, completion: nil)
    }

}

截屏2022-10-07 14.23.10.png

git地址：https://gitee.com/benovel/cyshop/tree/2%E7%94%B5%E5%95%86%E7%B3%BB%E7%BB%9FiOS-%E7%AE%80%E5%8D%95%E7%9A%84%E6%B3%A8%E5%86%8C%E7%99%BB%E9%99%86/