SwiftでのperformSegueの使い方！初心者向け10選

class ViewController: UIViewController {
    @IBAction func moveToNextScreen(_ sender: UIButton) {
        // "goToSecondScreen"はStoryboard上で定義したsegueのidentifierです
        self.performSegue(withIdentifier: "goToSecondScreen", sender: self)
    }
}

class FirstViewController: UIViewController {

    @IBAction func moveToNextWithParameter(_ sender: UIButton) {
        // segueの実行
        self.performSegue(withIdentifier: "goToSecondScreenWithData", sender: "Hello Second Screen!")
    }

    // prepareメソッドをオーバーライドしてデータの受け渡しを行う
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "goToSecondScreenWithData" {
            let secondVC = segue.destination as! SecondViewController
            secondVC.receivedData = sender as? String
        }
    }
}

class SecondViewController: UIViewController {
    var receivedData: String?
}

class ViewController: UIViewController {

    @IBAction func conditionalMove(_ sender: UIButton) {
        if someCondition {
            self.performSegue(withIdentifier: "goToGreenScreen", sender: self)
        } else {
            self.performSegue(withIdentifier: "goToRedScreen", sender: self)
        }
    }
}

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var transitionButton: UIButton!

    override func viewDidLoad() {
        super.viewDidLoad()

        transitionButton.addTarget(self, action: #selector(transitionToNextScreen), for: .touchUpInside)
    }

    @objc func transitionToNextScreen() {
        performSegue(withIdentifier: "goToDetailScreen", sender: self)
    }
}

class DetailViewController: UIViewController {
    // 遷移先のViewControllerの内容
}

import UIKit

class ListViewController: UITableViewController {

    let dataList = ["Item1", "Item2", "Item3"]

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return dataList.count
    }

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "dataCell", for: indexPath)
        cell.textLabel?.text = dataList[indexPath.row]
        return cell
    }

    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        performSegue(withIdentifier: "goToDetailFromList", sender: dataList[indexPath.row])
    }

    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "goToDetailFromList" {
            let detailVC = segue.destination as! DetailFromListViewController
            detailVC.itemDetail = sender as? String
        }
    }
}

class DetailFromListViewController: UIViewController {
    var itemDetail: String?

    // この中でitemDetailを使用して詳細情報を表示する処理を行う
}

// ViewController.swift
import UIKit

class ViewController: UIViewController {
    @IBAction func toNextScreen(_ sender: UIButton) {
        performSegue(withIdentifier: "toNext", sender: self)
    }

    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "toNext" {
            if let nextVC = segue.destination as? NextViewController {
                // ここでNextViewControllerのプロパティやメソッドを呼び出してカスタマイズ可能
                nextVC.labelText = "こんにちは、Swift!"
            }
        }
    }
}

// ViewController.swift
import UIKit

class ViewController: UIViewController {
    @IBAction func toNextScreenWithAnimation(_ sender: UIButton) {
        performSegue(withIdentifier: "toNextWithAnimation", sender: self)
    }

    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "toNextWithAnimation" {
            let transition = CATransition()
            transition.duration = 0.5
            transition.type = CATransitionType.push
            transition.subtype = CATransitionSubtype.fromRight
            view.window!.layer.add(transition, forKey: kCATransition)
        }
    }
}

import UIKit

class SecondViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        // 戻るボタンのタイトルを「Topに戻る」とする
        self.navigationController?.navigationBar.topItem?.backBarButtonItem = UIBarButtonItem(title: "Topに戻る", style: .plain, target: nil, action: nil)
    }
}

import UIKit

class FirstViewController: UIViewController {

    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        // segueのidentifierを使用して、遷移先を判定
        if segue.identifier == "goToSecond" {
            // 遷移先がSecondViewControllerの場合の処理
            let destinationVC = segue.destination as! SecondViewController
            destinationVC.data = "Data for SecondViewController"
        } else if segue.identifier == "goToThird" {
            // 遷移先がThirdViewControllerの場合の処理
            let destinationVC = segue.destination as! ThirdViewController
            destinationVC.data = "Data for ThirdViewController"
        }
    }
}

import UIKit

class FirstViewController: UIViewController {

    @IBAction func moveToSecond(_ sender: UIButton) {
        let secondVC = SecondViewController()
        self.navigationController?.pushViewController(secondVC, animated: true)
    }
}

// A画面
class AViewController: UIViewController, BViewControllerDelegate {
    // B画面への遷移処理
    func moveToB() {
        let bViewController = BViewController()
        bViewController.delegate = self
        navigationController?.pushViewController(bViewController, animated: true)
    }
}

// B画面
protocol BViewControllerDelegate: AnyObject {}

class BViewController: UIViewController {
    weak var delegate: BViewControllerDelegate?
}

button.addAction { [weak self] _ in
    self?.performSegue(withIdentifier: "ToNextScreen", sender: nil)
}

class SampleViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        NotificationCenter.default.addObserver(self, selector: #selector(handleNotification), name: .someNotification, object: nil)
    }

    deinit {
        NotificationCenter.default.removeObserver(self)
    }

    @objc func handleNotification(_ notification: Notification) {
        // 通知を受け取った時の処理
    }
}

class CustomSegueAnimation: NSObject, UIViewControllerAnimatedTransitioning {
    // アニメーションの期間を設定
    func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
        return 0.5
    }

    // アニメーションの詳細を定義
    func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
        guard let toViewController = transitionContext.viewController(forKey: .to) else { return }
        let finalFrame = transitionContext.finalFrame(for: toViewController)

        toViewController.view.frame = finalFrame.offsetBy(dx: 0, dy: -finalFrame.height)
        transitionContext.containerView.addSubview(toViewController.view)

        UIView.animate(withDuration: transitionDuration(using: transitionContext), animations: {
            toViewController.view.frame = finalFrame
        }) { (completed) in
            transitionContext.completeTransition(true)
        }
    }
}

class DestinationViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()

        // 背景色を赤色に変更
        self.view.backgroundColor = .red
    }
}