18장 스와이프 제스처 사용하기
//
// ViewController.swift
// SwipeGesture
//
// Created by stayfoolish on 23/10/2018.
// Copyright © 2018 stayfoolish. All rights reserved.
//
import UIKit
class ViewController: UIViewController {
let numOfTouchs = 2
@IBOutlet var imgViewUp: UIImageView!
@IBOutlet var imgViewDown: UIImageView!
@IBOutlet var imgViewLeft: UIImageView!
@IBOutlet var imgViewRight: UIImageView!
var imgLeft = [UIImage]()
var imgRight = [UIImage]()
var imgUp = [UIImage]()
var imgDown = [UIImage]()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
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")!)
imgRight.append(UIImage(named: "arrow-right-black.png")!)
imgRight.append(UIImage(named: "arrow-right-red.png")!)
imgRight.append(UIImage(named: "arrow-right-green.png")!)
imgViewUp.image = imgUp[0]
imgViewDown.image = imgDown[0]
imgViewLeft.image = imgLeft[0]
imgViewRight.image = imgRight[0]
let swipeUp = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGesture(_:)))
swipeUp.direction = UISwipeGestureRecognizerDirection.up
// swipeUp.numberOfTouchesRequired = numOfTouchs
self.view.addGestureRecognizer(swipeUp)
let swipeDown = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGesture(_:)))
swipeDown.direction = UISwipeGestureRecognizerDirection.down
// swipeDown.numberOfTouchesRequired = numOfTouchs
self.view.addGestureRecognizer(swipeDown)
let swipeLeft = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGesture(_:)))
swipeLeft.direction = UISwipeGestureRecognizerDirection.left
// swipeLeft.numberOfTouchesRequired = numOfTouchs
self.view.addGestureRecognizer(swipeLeft)
let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGesture(_:)))
swipeRight.direction = UISwipeGestureRecognizerDirection.right
// swipeRight.numberOfTouchesRequired = numOfTouchs
self.view.addGestureRecognizer(swipeRight)
let swipeUpMulti = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGestureMulti(_:)))
swipeUpMulti.direction = UISwipeGestureRecognizerDirection.up
swipeUpMulti.numberOfTouchesRequired = numOfTouchs
self.view.addGestureRecognizer(swipeUpMulti)
let swipeDownMulti = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGestureMulti(_:)))
swipeDownMulti.direction = UISwipeGestureRecognizerDirection.down
swipeDownMulti.numberOfTouchesRequired = numOfTouchs
self.view.addGestureRecognizer(swipeDownMulti)
let swipeLeftMulti = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGestureMulti(_:)))
swipeLeftMulti.direction = UISwipeGestureRecognizerDirection.left
swipeLeftMulti.numberOfTouchesRequired = numOfTouchs
self.view.addGestureRecognizer(swipeLeftMulti)
let swipeRightMulti = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGestureMulti(_:)))
swipeRightMulti.direction = UISwipeGestureRecognizerDirection.right
swipeRightMulti.numberOfTouchesRequired = numOfTouchs
self.view.addGestureRecognizer(swipeRightMulti)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
@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 = imgRight[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 = imgRight[1]
default:
break
}
}
}
@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 = imgRight[0]
switch swipeGesture.direction{
case UISwipeGestureRecognizerDirection.up:
imgViewUp.image = imgUp[2]
case UISwipeGestureRecognizerDirection.down:
imgViewDown.image = imgDown[2]
case UISwipeGestureRecognizerDirection.left:
imgViewLeft.image = imgLeft[2]
case UISwipeGestureRecognizerDirection.right:
imgViewRight.image = imgRight[2]
default:
break
}
}
}
}
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