[SWIFT]Lottie 애니메이션 Loading UI

pod로 Lottie 설치해야됨...

import UIKit
import Lottie

class LoadingHUD {
    private static let sharedInstance = LoadingHUD()
    
    private var backgroundView: UIView?
    private var loadingLabel: UILabel?
    private var isRun: Bool = false
    
    private var animationView: LottieAnimationView?
    
    class func show() {
        let backgroundView = UIView(frame: CGRect.init(x: 0, y: 0, width: 150, height: 150))
        backgroundView.tag = 1000
        
        let animation = LottieAnimation.named("loading_loop")
        let animationView = LottieAnimationView(animation: animation)
        animationView.frame = CGRect(x: 0, y: 0, width: 150, height: 150)
        animationView.loopMode = .loop
        animationView.contentMode = .scaleAspectFit
        animationView.tag = 1001
        
        let loadingLabel = UILabel(frame: CGRect.init(x: 0, y: 0, width: 100, height: 100))
        loadingLabel.text = "Loading ..."
        loadingLabel.font = UIFont.boldSystemFont(ofSize: 15)
        loadingLabel.textColor = .white
        loadingLabel.textAlignment = .center
        
        if let window = UIApplication.shared.keyWindow {
            window.addSubview(backgroundView)
            window.addSubview(animationView)
            window.addSubview(loadingLabel)
            window.bringSubviewToFront(backgroundView)
            window.bringSubviewToFront(popupView)
            
            backgroundView.frame = CGRect(x: 0, y: 0, width: window.frame.maxX, height: window.frame.maxY)
            backgroundView.backgroundColor = UIColor(red: 0, green: 0, blue: 0, alpha: 0.6)
            
            animationView.center = window.center
            animationView.play()
            
            loadingLabel.layer.position = CGPoint(x: window.frame.midX, y: popupView.frame.maxY+10)
            
            sharedInstance.backgroundView?.removeFromSuperview()
            sharedInstance.animationView?.removeFromSuperview()
            sharedInstance.loadingLabel?.removeFromSuperview()
            sharedInstance.backgroundView = backgroundView
            sharedInstance.animationView = animationView
            sharedInstance.loadingLabel = loadingLabel
            
            sharedInstance.isRun = true
        }
    }
    class func hide() {
//        if let window = UIApplication.shared.keyWindow {
//            let backView = window.getView(viewTag: 1000) as? UIView
//            let animationView = window.getView(viewTag: 1001) as? LottieAnimationView
//            animationView?.stop()
//            backView?.removeFromSuperview()
//            animationView?.removeFromSuperview()
//            sharedInstance.isRun = false
//        }
//        return
        
        if let animationView = sharedInstance.animationView,
           let loadingLabel = sharedInstance.loadingLabel,
           let backgroundView = sharedInstance.backgroundView {
            animationView.stop()
            backgroundView.removeFromSuperview()
            animationView.removeFromSuperview()
            loadingLabel.removeFromSuperview()
        }
        
        sharedInstance.isRun = false
    }
    
    class func isLoading() -> Bool {
        return sharedInstance.isRun
    }
}

 

[사용방법]

import UIKit

class LodingHUDViewController: UIViewController {
    
    var timer: Timer? = nil
    
    override func viewDidLoad() {
        super.viewDidLoad()
    }
    
    @IBAction func showButton(_ sender: UIButton) {
        
        if let timer = self.timer {
            if timer.isValid {
                timer.invalidate()
            }
        }
        
        LoadingHUD.show()
        
        self.timer = Timer.scheduledTimer(withTimeInterval: 5, repeats: false) { (Timer) in
            LoadingHUD.hide()
        }
    }
}