22 ios 스위프트 스와이프 기능 구현

22 ios 스위프트 스와이프 기능 구현

//

//  ViewController.swift

//  SwipeGestuer

//

//  Created by MacBookPro on 2017. 11. 30..

//  Copyright © 2017년 MacBookPro. All rights reserved.

//

import UIKit

class ViewController: UIViewController {

    let numberOfTouch = 2

    

    @IBOutlet weak var imgVIewUp: UIImageView!

    @IBOutlet weak var imgVIewLeft: UIImageView!

    @IBOutlet weak var imgVIewRight: UIImageView!

    @IBOutlet weak var imgVIewDown: UIImageView!

    

    //이미지 배열 선언하기

    //각 방향별로 검은색과 빨간색 이미지를 저장하기 위해 다음과 같이 배열을 선언한다.

    

    var imgLeft = [UIImage]()

    var imgRigth = [UIImage]()

    var imgUp = [UIImage]()

    var imgDown = [UIImage]()

    

    

    //이미지 배열에 이미지 할당 하기

    override func viewDidLoad() {

        super.viewDidLoad()

        

        //배열을 uiimage형으로 만들었기 때문에 append의 인수로 uiimage형의 값을 입력한다.

        //스와이프하면 검은색 화살표가 빨간색이 되도록 하기 위해 처음에는 검은색 화살표의 파일명,

        //그 뒤에는 빨간색 화살표의 파일명을 입력

        imgUp.append(UIImage(named:"arrow-up-black.png")!)

        imgUp.append(UIImage(named:"arrow-up-red.png")!)

        imgUp.append(UIImage(named:"arrow-up-green.png")!)

        imgDown.append(UIImage(named:"arrow-down-black.png")!)

        imgDown.append(UIImage(named:"arrow-down-red.png")!)

        imgDown.append(UIImage(named:"arrow-down-green.png")!)

        imgLeft.append(UIImage(named:"arrow-left-black.png")!)

        imgLeft.append(UIImage(named:"arrow-left-red.png")!)

        imgLeft.append(UIImage(named:"arrow-left-green.png")!)

        imgRigth.append(UIImage(named:"arrow-right-black.png")!)

        imgRigth.append(UIImage(named:"arrow-right-red.png")!)

        imgRigth.append(UIImage(named:"arrow-right-green.png")!)

        

        

        //위에서 할당한 각 이미지 배열의 첫 번째 인자를 이미지 뷰에 할당

        imgVIewUp.image = imgUp[0]

        imgVIewDown.image = imgDown[0]

        imgVIewLeft.image = imgLeft[0]

        imgVIewRight.image = imgRigth[0]

        

        //* UISwipeGestureRecognizer 클래스 상수를 선언한다. 액션 인수는 해당 스와이프 제스처를 실행했을 때 실행할 메서드를 의미 한다.

        let swipeUp = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGesture(_:)))

        //위에서 선언한 클래스 상수의 direction의 방형을  up으로 설정한다.

        swipeUp.direction = UISwipeGestureRecognizerDirection.up

        //몇 손가락으로 터치를 할것인지 정하기 2손가락으로

        //swipeUp.numberOfTouchesRequired = numberOfTouch

        //뷰 객체의 addGesture~~ 메서드를 이용해서 위쪽 방향의 스와이프 제스처를 등록 한다.

        self.view.addGestureRecognizer(swipeUp)

        

        

        //*아래

        let swipeDown = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGesture(_:)))

        swipeDown.direction = UISwipeGestureRecognizerDirection.down

       // swipeDown.numberOfTouchesRequired = numberOfTouch

        self.view.addGestureRecognizer(swipeDown)

        

        //*왼쪽

        let swipeLeft = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGesture(_:)))

        swipeLeft.direction = UISwipeGestureRecognizerDirection.left

       // swipeLeft.numberOfTouchesRequired = numberOfTouch

        self.view.addGestureRecognizer(swipeLeft)

        

        //*오른쪽

        let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGesture(_:)))

        swipeRight.direction = UISwipeGestureRecognizerDirection.right

       // swipeRight.numberOfTouchesRequired = numberOfTouch

        self.view.addGestureRecognizer(swipeRight)

        

        

        //------------------ 멀티 스와이프 구현하기 ------------------

        

        let swipeUpMulti = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGestureMulti(_:)))

        swipeUpMulti.direction = UISwipeGestureRecognizerDirection.up

        //몇 손가락으로 터치를 할것인지 정하기 2손가락으로

        swipeUpMulti.numberOfTouchesRequired = numberOfTouch

        self.view.addGestureRecognizer(swipeUpMulti)

        

        let swipeDownMulti = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGestureMulti(_:)))

        swipeDownMulti.direction = UISwipeGestureRecognizerDirection.down

        swipeDownMulti.numberOfTouchesRequired = numberOfTouch

        self.view.addGestureRecognizer(swipeDownMulti)

        

        let swipeLeftMulti = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGestureMulti(_:)))

        swipeLeftMulti.direction = UISwipeGestureRecognizerDirection.left

        swipeLeftMulti.numberOfTouchesRequired = numberOfTouch

        self.view.addGestureRecognizer(swipeLeftMulti)

        

        let swipeRightMulti = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGestureMulti(_:)))

        swipeRightMulti.direction = UISwipeGestureRecognizerDirection.right

        swipeRightMulti.numberOfTouchesRequired = numberOfTouch

        self.view.addGestureRecognizer(swipeRightMulti)

        

    }

    

    //멀티 스와이프 액션 함수

    @objc func respondToSwipeGestureMulti(_ gesture: UIGestureRecognizer){

        

        if let swipeGesture = gesture as? UISwipeGestureRecognizer{

            

            imgVIewUp.image = imgUp[0]

            imgVIewDown.image = imgDown[0]

            imgVIewLeft.image = imgLeft[0]

            imgVIewRight.image = imgRigth[0]

            

            switch swipeGesture.direction {

                

            case UISwipeGestureRecognizerDirection.up:

                imgVIewUp.image = imgUp[2]

            case UISwipeGestureRecognizerDirection.down:

                imgVIewDown.image = imgDown[2]

            case UISwipeGestureRecognizerDirection.up:

                imgVIewLeft.image = imgLeft[2]

            case UISwipeGestureRecognizerDirection.up:

                imgVIewRight.image = imgRigth[2]

            default: break

                

            }

        }

    }

    

    

    

    //스와이프 제스처를 등록할 때 입력한 액션인수는 스와이프 제스쳐를 행했을 때 실행할 메서드를 의미한다.

    @objc func respondToSwipeGesture(_ gesture: UIGestureRecognizer){

        

        if let swipeGesture = gesture as? UISwipeGestureRecognizer {

            

            imgVIewUp.image = imgUp[0]

            imgVIewDown.image = imgDown[0]

            imgVIewLeft.image = imgLeft[0]

            imgVIewRight.image = imgRigth[0]

            

            

            switch swipeGesture.direction{

                

            case UISwipeGestureRecognizerDirection.up:

                imgVIewUp.image = imgUp[1]

            case UISwipeGestureRecognizerDirection.down:

                imgVIewDown.image = imgDown[1]

            case UISwipeGestureRecognizerDirection.left:

                imgVIewLeft.image = imgLeft[1]

            case UISwipeGestureRecognizerDirection.right:

                imgVIewRight.image = imgRigth[1]

            default: break

            }

            

            

            

            

        }

        

    }

    

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

        // Dispose of any resources that can be recreated.

    }

}