import UIKit

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

        //左スワイプ検知
        let leftSwipe = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.swipeGesture(_:)))
        leftSwipe.direction = .left
        self.view.addGestureRecognizer(leftSwipe)

        //右スワイプ検知
        let rightSwipe = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.swipeGesture(_:)))
        rightSwipe.direction = .right
        self.view.addGestureRecognizer(rightSwipe)
    }

    //スワイプ検知時の動作
    func swipeGesture(_ sender: UISwipeGestureRecognizer){
        //左スワイプの動作
        if sender.direction == .left {
            //遷移先画面の紐付け（※"NextView"はStoryboardにて設定した画面IDを記述）
            let Swipe = self.storyboard!.instantiateViewController(withIdentifier: "NextView")

            //画面遷移処理
            self.present( Swipe, animated: true, completion: nil)
            print("left")
        }

        if sender.direction == .right{
            //遷移先画面の紐付け（※"PreviousView"はStoryboardにて設定した画面IDを記述）
            let Swipe = self.storyboard!.instantiateViewController(withIdentifier: "PreviousView")

            //画面遷移処理
            self.present( Swipe, animated: true, completion: nil)
            print("right")
        }
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}