iOS Swift Login 練習 登入系統

iOS開發開始
先練習一個登入功能頁面
用到
Label元件
Button元件
TextField元件
頁面切換功能

1.先建立一個Single View Application空白專案

2.打開Main.storyboard 拉一個登入畫面

在右方再拉一個登入成功頁面，並在identity的Storyboard ID 輸入任意名稱，下方Use Storyboard ID 打勾。

3.ViewController.swift

import UIKit

class ViewController: UIViewController {
    
    @IBOutlet weak var account: UITextField! //輸入帳號
    @IBOutlet weak var password: UITextField! //輸入密碼
    @IBOutlet weak var info: UILabel! //訊息
    let myAccount = "apple" //驗證帳號
    let myPassword = "123" //驗證密碼
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    //登入
    @IBAction func login(sender: UIButton) {
        if account.text == myAccount && password.text == myPassword {
            self.info.text = "成功"
            
            //傳至下一頁面
            let viewController:UIViewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewControllerWithIdentifier("MainActivity")
            
            self.presentViewController(viewController, animated: false, completion: nil)
            // 返回 self.dismissViewControllerAnimated(true, completion: nil)
            
        }else{
            self.info.text = "輸入錯囉"
        }
    }
    
    //清除
    @IBAction func reset(sender: UIButton) {
        account.text = ""
        password.text = ""
    }
    
}

參考連結: https://coderwall.com/p/cjuzng/swift-instantiate-a-view-controller-using-its-storyboard-name-in-xcode