[Swift] 画面遷移アニメーション4種 (modalTransitionStyle)

photo credit: Much Ramblings Swifts via photopin (license)

概要

present で画面遷移する際のアニメーションには、次の4種類が用意されている。

• coverVertical : 下から上 (デフォルト)
• crossDissolve : ふわっと登場
• flipHorizontal : くるっと反転
• partialCurl : ページめくり

実装方法

画面遷移先のコントローラーであるsecondViewControllerのmodalTransitionStyleを設定することで、画面遷移（行きと戻りの両方）のアニメーションを設定できる。

/* どれかに設定する */
secondViewController.modalTransitionStyle = UIModalTransitionStyle.coverVertical
// secondViewController.modalTransitionStyle = UIModalTransitionStyle.crossDissolve
// secondViewController.modalTransitionStyle = UIModalTransitionStyle.flipHorizontal
// secondViewController.modalTransitionStyle = .UIModalTransitionStylepartialCurl

ちなみに、firstView ⇒ secondView へと画面遷移するためのコードは、

firstViewController.present(secondViewController, animated: true, completion: nil)

で、 secondView ⇒ firstView へと戻るには、

secondViewController.dismiss(animated: true, completion: nil)

とすればよい。

サンプルコード

冒頭の動画のソースコード全体は次の通りだ。
同じものを GitHub にも置いておいた。

ViewController.swift

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        let coverVerticalModalButton: UIButton = UIButton(frame: CGRect(x: 0, y: self.view.bounds.height * 0, width: self.view.frame.width, height: self.view.bounds.height * 0.25))
        coverVerticalModalButton.setTitle("coverVertical", for: .normal)
        coverVerticalModalButton.setTitleColor(UIColor.white, for: .normal)
        coverVerticalModalButton.titleLabel?.font = UIFont.systemFont(ofSize: 40)
        coverVerticalModalButton.backgroundColor = UIColor.red
        coverVerticalModalButton.addTarget(self, action: #selector(self.showSecondView(_:)), for: .touchUpInside)
        self.view.addSubview(coverVerticalModalButton)

        let crossDissolveModalButton: UIButton = UIButton(frame: CGRect(x: 0, y: self.view.bounds.height * 0.25, width: self.view.frame.width, height: self.view.bounds.height * 0.25))
        crossDissolveModalButton.setTitle("crossDissolve", for: .normal)
        crossDissolveModalButton.setTitleColor(UIColor.white, for: .normal)
        crossDissolveModalButton.titleLabel?.font = UIFont.systemFont(ofSize: 40)
        crossDissolveModalButton.backgroundColor = UIColor.orange
        crossDissolveModalButton.addTarget(self, action: #selector(self.showSecondView(_:)), for: .touchUpInside)
        self.view.addSubview(crossDissolveModalButton)

        let flipHorizontalButton: UIButton = UIButton(frame: CGRect(x: 0, y: self.view.bounds.height * 0.5, width: self.view.frame.width, height: self.view.bounds.height * 0.25))
        flipHorizontalButton.setTitle("flipHorizontal", for: .normal)
        flipHorizontalButton.setTitleColor(UIColor.white, for: .normal)
        flipHorizontalButton.titleLabel?.font = UIFont.systemFont(ofSize: 40)
        flipHorizontalButton.backgroundColor = UIColor.brown
        flipHorizontalButton.addTarget(self, action: #selector(self.showSecondView(_:)), for: .touchUpInside)
        self.view.addSubview(flipHorizontalButton)

        let partialCurlButton: UIButton = UIButton(frame: CGRect(x: 0, y: self.view.bounds.height * 0.75, width: self.view.frame.width, height: self.view.bounds.height * 0.25))
        partialCurlButton.setTitle("partialCurl", for: .normal)
        partialCurlButton.setTitleColor(UIColor.white, for: .normal)
        partialCurlButton.titleLabel?.font = UIFont.systemFont(ofSize: 40)
        partialCurlButton.backgroundColor = UIColor.blue
        partialCurlButton.addTarget(self, action: #selector(self.showSecondView(_:)), for: .touchUpInside)
        self.view.addSubview(partialCurlButton)

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

    @objc func showSecondView(_ sender: UIButton) {
        let secondViewController = SecondViewController()
        secondViewController.view.backgroundColor = sender.backgroundColor

        switch sender.title(for: .normal) {
        case "coverVertical":
            secondViewController.modalTransitionStyle = .coverVertical
        case "crossDissolve":
            secondViewController.modalTransitionStyle = .crossDissolve
        case "flipHorizontal":
            secondViewController.modalTransitionStyle = .flipHorizontal
        case "partialCurl":
            secondViewController.modalTransitionStyle = .partialCurl
        default:
            secondViewController.modalTransitionStyle = .coverVertical
        }

        self.present(secondViewController, animated: true, completion: nil)
    }

}

SecondViewController.swift

import UIKit

class SecondViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        let closeButton: UIButton = UIButton(frame: self.view.frame)
        closeButton.layer.position = self.view.layer.position
        closeButton.setTitle("Close", for: .normal)
        closeButton.setTitleColor(UIColor.white, for: .normal)
        closeButton.titleLabel?.font = UIFont.systemFont(ofSize: 40)
        closeButton.backgroundColor = UIColor.clear
        closeButton.addTarget(self, action: #selector(self.close(_:)), for: .touchUpInside)
        self.view.addSubview(closeButton)
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

    @objc func close(_ sender: UIButton) {
        self.dismiss(animated: true, completion: nil)
    }

}