按下动画按钮时不动画

Question

当我按下按钮时，有一个没有动画的动画项目。我究竟做错了什么。以下是视图控制器中的代码：

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var startStopAnimating: UIButton!
    @IBOutlet weak var imageView: UIImageView!

    // image arrays
    let frames: [String] = ["frame1.png", "frame2.png", "frame3.png", "frame4.png", "frame5.png", "frame6.png", "frame7.png"]
    let swan: [String] = ["swanFrame1", "swanFrame2", "swanFrame3"]
    let swirl: [String] = ["swirlFrame1", "swirlFrame2", "swirlFrame3"]
    let starryNight: [String] = ["starryNight1", "starryNight2", "starryNight3"]
    let doveWithBranch: [String] = ["doveWithBranch1", "doveWithBranch2", "doveWithBranch3"]
    let tanCandles: [String] = ["tanCandles1", "tanCandles2", "tanCandles3", "tanCandles4"]
    let buddhaFloat: [String] = ["buddhaFloat1", "buddhaFloat2", "buddhaFloat3", "buddhaFloat4", "buddhaFloat5", "buddhaFloat6"]

    // timer vars
    var timer = NSTimer()
    var isAnimating = true
    var counter = 1
    var arrayIndex = 0
    var pauseCheck = 0



    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        randomizedFuncs()
    }



    @IBAction func startStopAnimateButton(sender: AnyObject) {

        if isAnimating == true {
            timer.invalidate()
            startStopAnimating.setTitle("Animate", forState: UIControlState.Normal)
        } else {
            startStopAnimating.setTitle("Stop Animating", forState: UIControlState.Normal)
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "pauseCheck", userInfo: nil, repeats: true)
        }
    }

    func framesFunc() {
        if arrayIndex == swan.count-1 {
            arrayIndex = 0
        } else {
            arrayIndex++
        }
        imageView.image = UIImage(named: frames[arrayIndex])
        counter++
        pauseCheck = 1

        if counter == 50 {
            arrayIndex = 0
            timer.invalidate()
            isAnimating = false
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "swanFunc", userInfo: nil, repeats: true)
            isAnimating = true
            counter = 0
            arrayIndex = 0
        }
    }

    func swanFunc() {
        if arrayIndex == frames.count-1 {
            arrayIndex = 0
        } else {
            arrayIndex++
        }
        imageView.image = UIImage(named: frames[arrayIndex])
        counter++
        pauseCheck = 2

        if counter == 50 {
            arrayIndex = 0
            timer.invalidate()
            isAnimating = false
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "swirlFunc", userInfo: nil, repeats: true)
            isAnimating = true
            counter = 0
            arrayIndex = 0
        }
    }

    func swirlFunc() {
        if arrayIndex == swirl.count-1 {
            arrayIndex = 0
        } else {
            arrayIndex++
        }
        imageView.image = UIImage(named: frames[arrayIndex])
        counter++
        pauseCheck = 3

        if counter == 50 {
            arrayIndex = 0
            timer.invalidate()
            isAnimating = false
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "starryNightFunc", userInfo: nil, repeats: true)
            isAnimating = true
            counter = 0
            arrayIndex = 0
        }
    }

    func starryNightFunc() {
        if arrayIndex == starryNight.count-1 {
            arrayIndex = 0
        } else {
            arrayIndex++
        }
        imageView.image = UIImage(named: frames[arrayIndex])
        counter++
        pauseCheck = 4

        if counter == 50 {
            arrayIndex = 0
            timer.invalidate()
            isAnimating = false
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "doveWithBranchFunc", userInfo: nil, repeats: true)
            isAnimating = true
            counter = 0
            arrayIndex = 0
        }
    }

    func doveWithBranchFunc() {
        if arrayIndex == doveWithBranch.count-1 {
            arrayIndex = 0
        } else {
            arrayIndex++
        }
        imageView.image = UIImage(named: frames[arrayIndex])
        counter++
        pauseCheck = 5

        if counter == 50 {
            arrayIndex = 0
            timer.invalidate()
            isAnimating = false
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "tanCandlesFunc", userInfo: nil, repeats: true)
            isAnimating = true
            counter = 0
            arrayIndex = 0
        }
    }

    func tanCandlesFunc() {
        if arrayIndex == tanCandles.count-1 {
            arrayIndex = 0
        } else {
            arrayIndex++
        }
        imageView.image = UIImage(named: frames[arrayIndex])
        counter++
        pauseCheck = 6

        if counter == 50 {
            arrayIndex = 0
            timer.invalidate()
            isAnimating = false
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "buddhaFloatFunc", userInfo: nil, repeats: true)
            isAnimating = true
            counter = 0
            arrayIndex = 0
        }
    }

    func buddhaFloatFunc() {
        if arrayIndex == buddhaFloat.count-1 {
            arrayIndex = 0
        } else {
            arrayIndex++
        }
        imageView.image = UIImage(named: frames[arrayIndex])
        counter++
        pauseCheck = 7

        if counter == 50 {
            arrayIndex = 0
            timer.invalidate()
            isAnimating = false
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "frames Func", userInfo: nil, repeats: true)
            isAnimating = true
            counter = 0
            arrayIndex = 0
        }
    }

    // pauses the images and restarts them where they left off, its called in the start/stop action

    func pauseCheckFunc() {

        if pauseCheck == 1 {
            timer.invalidate()
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "framesFunc", userInfo: nil, repeats: true)
        } else if pauseCheck == 2 {
            timer.invalidate()
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "swanFunc", userInfo: nil, repeats: true)
        } else if pauseCheck == 3 {
            timer.invalidate()
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "swirlFunc", userInfo: nil, repeats: true)
        } else if pauseCheck == 4 {
            timer.invalidate()
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "starryNightFunc", userInfo: nil, repeats: true)
        } else if pauseCheck == 5 {
            timer.invalidate()
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "doveWithBranchFunc", userInfo: nil, repeats: true)
        } else if pauseCheck == 6 {
            timer.invalidate()
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "tanCandlesFunc", userInfo: nil, repeats: true)
        } else if pauseCheck == 7 {
            timer.invalidate()
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "buddhaFloatFunc", userInfo: nil, repeats: true)
        }
    }

    func randomizedFuncs() {

        let randomNumber = Int(arc4random_uniform(UInt32(7)))

        if randomNumber == 0 {
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "swanFunc", userInfo: "nil", repeats: true)
        } else if randomNumber == 1 {
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "framesFunc", userInfo: "nil", repeats: true)
        } else if randomNumber == 2 {
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "swirlFunc", userInfo: "nil", repeats: true)
        } else if randomNumber == 3 {
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "starryNightFunc", userInfo: "nil", repeats: true)
        } else if randomNumber == 4 {
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "doveWithBranchFunc", userInfo: "nil", repeats: true)
        } else if randomNumber == 5 {
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "tanCandlesFunc", userInfo: "nil", repeats: true)
        } else if randomNumber == 6 {
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "buddhaFloatFunc", userInfo: "nil", repeats: true)
        }

    }



}

Answer 1

您使用pauseCheck作为选择器，但这不是代码中的功能。我认为你的意思是pauseCheckFunc？

另外，我在代码中的任何地方都没有看到实际开始制作动画的命令。您也没有在UIImages上正确设置动画帧。目前还不清楚你为什么要使用计时器为图像制作动画。您只需将图像数组设置为UIImages的animationImages属性，然后使用startAnimating()和stopAnimating()来启动和停止动画。