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  • gif动画效果-swift

    //  ViewController.swift
    //  Animations
    //  Created by WZ on 16/1/15.
    //  Copyright © 2016年 iwangzheng.com. All rights reserved.
    
    import UIKit
    
    class ViewController: UIViewController {
        
        var count = 1
        var timer = NSTimer()
        var isAnimating = true
        
        @IBOutlet weak var Image: UIImageView!
        
        @IBAction func nextBtn(sender: AnyObject) {
            if isAnimating == true{
               timer.invalidate()
                isAnimating = false
            }else{
                 timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: Selector("doAnimaition"), userInfo: nil, repeats: true)
                isAnimating = true
            }
            
            
        }
        override func viewDidLoad() {
            super.viewDidLoad()
            timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: Selector("doAnimaition"), userInfo: nil, repeats: true)
        }
    
        func doAnimaition(){
            if count < 4{
                count++
            }else
            {
                count = 1
            }
            Image.image = UIImage(named: "(count)")
        
        }
        
        
        override func didReceiveMemoryWarning() {
            super.didReceiveMemoryWarning()
            // Dispose of any resources that can be recreated.
        }
        
        /*
        override func viewDidLayoutSubviews() {
           // Image.center = CGPointMake(Image.center.x - 400, Image.center.y) //从左往右
            //Image.alpha = 0 //从无到有
            Image.frame = CGRectMake(100, 20, 0, 0)//改变大小
        }
        override func viewDidAppear(animated: Bool) {
            UIView.animateWithDuration(1,animations: { () -> Void in
                //self.Image.center = CGPointMake(self.Image.center.x + 400, self.Image.center.y)
               // self.Image.alpha = 1
                self.Image.frame = CGRectMake(100, 20, 100, 200)
            })
        }
        */
    
    
    }
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  • 原文地址:https://www.cnblogs.com/iwangzheng/p/5135107.html
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