Animation的制作-5种类型-阿里云开发者社区

1.最简单的动画(view的移动或者View的缩小与放大)

- (void)viewDidLoad {
   [super viewDidLoad];
   view4 = [[UIView alloc]initWithFrame:CGRectMake(354, 676, 60, 60)];
   view4.backgroundColor = [UIColor yellowColor];
  [self.view addSubview:view4];
 //准备动画
 [UIView beginAnimations:nil context:nil];
 //给动画设置时间间隔
 [UIView setAnimationDuration:3];
 //设置动画的重复次数
 [UIView setAnimationRepeatCount:1];
 //重复执行的时候，第二次响应相反的效果
 //[UIView setAnimationRepeatAutoreverses:YES];
 [UIView setAnimationDelegate:self];
//动画开始时，执行方法选择器选择的方法
//[UIView setAnimationWillStartSelector:@selector(willStart)];
 [UIView setAnimationDidStopSelector:@selector(didStop)];
 view4.frame =CGRectMake(354,0, 60, 60);
//真正开始动画
[UIView commitAnimations];
}

需要注意的地方：必须挂代理，动画开始和结束的方法才会被调用，这里的代理是没有协议的，遵守的是监听动画开始和结束的方法

2.gif动态图片的播放（TOM喝牛奶为例为例）(需要TOM资源的可以简书联系我)

- (void)viewDidLoad {
[super viewDidLoad];
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(15, 580, 60, 60);
button.layer.cornerRadius = 25;
[button addTarget:self action:@selector(milk) forControlEvents:UIControlEventTouchUpInside];
[button  setImage:[UIImage imageNamed:@"牛奶"] forState:UIControlStateNormal];
button.clipsToBounds = YES;
[self.view addSubview:button];
}

-(void)milk
{
    UIImageView *imageView = [[UIImageView alloc] initWithFrame:self.view.bounds];
    [self.view addSubview:imageView];
     NSMutableArray imagesArray = [NSMutableArray array];
    for (int index = 0; index<81; index++)
    {
        NSString *string = [NSString stringWithFormat:@"eat_%d.jpg",index];
        UIImage *image = [UIImage imageNamed:str];
        [imagesArray addObject:image];
     }
        //给iamgeView设置动画图片
        imageView.animationImages = imagesArray;
        //设置动画时间
        imageView.animationDuration = 4; 
        //设置重复次数
        imageView.animationRepeatCount =1; //设置0也表示无数次执行
        //让动画开始
        [imageView startAnimating];
        //让动画结束
        //[imageView stopAnimating];
 }

需要注意的地方：图片的加载上是一个数组，然后把数组给动画进行播放。获取动态图片可以到百度，输入“gif图片”就可以了，下载下来，打开图片，可以看到是有很多张图片组成，统一进行改名字（便于使用）。

3.利用Block语句进行动画（有关透明度的问题，也是一种动画）

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(100, 100, 250, 300)];
label.center = self.view.center;
label.backgroundColor = [UIColor redColor];
[self.view addSubview:label];
label.text = @"动画";
label.textAlignment = NSTextAlignmentCenter;
label.layer.cornerRadius = 10;
label.clipsToBounds = YES;
label.alpha = 0;
label.backgroundColor = [UIColor greenColor];
[self.view addSubview:label];
[UIView animateWithDuration:5 animations:^{
    label.alpha = 1;
} completion:^(BOOL finished) {
    [UIView animateWithDuration:5 animations:^{
        label.alpha = 0;
    } completion:^(BOOL finished) {
        [label removeFromSuperview];
    }];
} ];
}

需要注意的地方：block模块方面，它的UIView animateWithDuration:5 animations:^{ label.alpha = 1;} 相当于动画的开始，completion:^(BOOL finished)后面相当于动画的结束。

4.转场动画（其实也就是两个view之间的转换）

#import "ViewController.h"
  @interface ViewController ()
   {
         UIView *view1;
         UIView *view2;
   } 
   @end
   @implementation ViewController
  - (void)viewDidLoad {
         [super viewDidLoad];
          view1 = [[UIView alloc]initWithFrame:self.view.frame];
          view1.backgroundColor = [UIColor yellowColor];
         [self.view addSubview:view1];
         view2 = [[UIView alloc]initWithFrame:self.view.frame];
         view2.backgroundColor = [UIColor greenColor];
        [self.view addSubview:view2];  
     }
  -(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
//1.创建一个动画对象(转场动画对象)
    CATransition *animation = [CATransition animation];
//2.创建一个代理监听动画的开始与结束
    animation.delegate = self;
//3.动画执行时间
    animation.duration = 2.0;
//4.设置动画的快慢效果（四种）
     /*
       UIViewAnimationCurveEaseInOut,         // slow at beginning and end
       UIViewAnimationCurveEaseIn,            // slow at beginning
       UIViewAnimationCurveEaseOut,           // slow at end
       UIViewAnimationCurveLinear
    */
    animation.timingFunction = UIViewAnimationCurveEaseInOut;//curve |kɜːv曲线
   //5.设置类型
      /*
       //动画类型说明
         公有API
      kCATransitionFade 交叉淡化过渡，新视图逐渐显示在屏幕上，旧视图逐渐淡化出视野
      kCATransitionMoveIn 新视图移到旧视图上面，好像盖在上面。
      kCATransitionPush 新视图将旧视图推出去。
      kCATransitionReveal 将旧视图移开显示出下面的新视图。
      */
      animation.type =  kCATransitionPush;
      animation.type = @"cameraIrisHollowClose";//苹果私有的，下面更多详解
     //6.设置动画的子类型（动画方向）
     /*
        *kCATransitionFromRight
        *kCATransitionFromLeft
        *kCATransitionFromTop
        *kCATransitionFromBottom
     */
     animation.subtype = kCATransitionFromTop;
    //获取到子视图在父视图上的位置
     NSInteger indexOfView1 = [self.view.subviews  indexOfObject:view1];
     NSInteger indexOfView2 = [self.view.subviews  indexOfObject:view2];
     //在parentView执行动画的时候，调换两个视图的位置，以达到视图切换的效果
     [self.view exchangeSubviewAtIndex:indexOfView1  withSubviewAtIndex:indexOfView2];
      //7.将转场动画添加到self.view的图层layer
      [self.view.layer addAnimation:animation forKey:nil];
}
 -(void)animationDidStart:(CAAnimation *)anim
 {
     NSLog(@"动画开始了");
}
 -(void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag
 {
    NSLog(@"动画结束了");
 }
 @end

需要注意的地方：1.转场动画一定要有一个animation对象，2.type代表的是动画类型，subtype代表的是动画方向，它们的开头都是KCA记住就好了。3.获取到子视图在父视图上的位置 NSInteger indexOfView1 = [self.view.subviews indexOfObject:view1];一定要学会，在交换时不用担心view位置的变化

5.无限轮播动画（图片一直可以滑动，左右一直无线循环）

下面的代码大家可以复制到Xcode里面打开（自己添加几张图片，模拟一下效果）

ViewController.m
   无线轮播动画
  Created by 王冲 on 16/5/12.
  Copyright © 2016年 王冲. All rights reserved.
  #import "ViewController.h"
  @interface ViewController ()
  {
      UIImageView *_imageView;
      int _currentIndex;
  }
  @end
  @implementation ViewController
#pragma mark   1.**************(添加两个清扫手势，左右)
 - (void)viewDidLoad {
     [super viewDidLoad];
    _imageView = [[UIImageView alloc]initWithFrame:self.view.frame];
    _imageView.image = [UIImage imageNamed:@"0.jpg"];
    [self.view addSubview:_imageView];
   //要想实现左滑和右侧滑动就需要添加手势
    UISwipeGestureRecognizer *leftSwipe = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(leftSwipe)];
    leftSwipe.direction = UISwipeGestureRecognizerDirectionLeft;
    [self.view  addGestureRecognizer:leftSwipe];
    UISwipeGestureRecognizer *rightSwipe = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(rightSwipe)];
    rightSwipe.direction = UISwipeGestureRecognizerDirectionRight;
    [self.view addGestureRecognizer:rightSwipe];
}
#pragma mark   2.**************两个手势实现的方法
-(void)leftSwipe
{
      [self setTransition:YES];
 }
-(void)rightSwipe
{
     [self setTransition:NO];
}
#pragma mark   3.**************
 //真正实现转场动画
-(void)setTransition:(BOOL)isNext
{
     CATransition *animation = [CATransition animation];
     animation.duration =0.5;    //duration |djʊˈreɪʃn, 持续时间
    //设置动画类型type
      /*
       *动画类型说明(公有API)4种类型
       * kCATransitionFade 交叉淡化过渡，新视图逐渐显示在屏幕上，旧视图逐渐淡化出视野
       * kCATransitionMoveIn 新视图移到旧视图上面，好像盖在上面。
       * kCATransitionPush 新视图将旧视图推出去。
       * kCATransitionReveal 将旧视图移开显示出下面的新视图。
       */
     animation.type =  kCATransitionPush ;
    /*
    私有API,注意对于苹果官方没公开的动画类型只能使用字符串，并没有对应的常量定义
        animation.type =  @"cube"  //立方体效果
        animation.type =  @"suckEffect" //收缩效果，如一块布被抽走
        animation.type =  @"oglFlip"  //上下翻转效果
        animation.type =  @"rippleEffect"  //滴水效果
        animation.type =  @"pageCurl"  //向上翻一页
        animation.type =  @"pageUnCurl"  //向下翻一页
        animation.type =  @“cameralIrisHollowOpen”  //摄像头打开效果
        animation.type =  @“cameraIrisHollowClose”  //摄像头关闭效果
     */
   //设置动画的子类型subtype（动画方向）4种类型
   /*
    *kCATransitionFromRight （）
    *kCATransitionFromLeft
    *kCATransitionFromTop
    *kCATransitionFromBottom
    */
   if (isNext) {
         animation.subtype = kCATransitionFromRight;
    }else
    {
        animation.subtype = kCATransitionFromLeft;   
    }
  //清扫获取下面一张图片
    _imageView.image = [self getImage:isNext];
    [_imageView.layer addAnimation:animation forKey:nil];
  }
#pragma mark    4. **************轻划切换图片
-(UIImage *)getImage:(BOOL)isNext
 {
     if (isNext) {
         _currentIndex = (_currentIndex +1)%3;
      } 
      else
      {
         _currentIndex = (_currentIndex +2)%3;/
      }
    NSString *string = [NSString stringWithFormat:@"%d.jpg",_currentIndex];
    UIImage *image = [UIImage imageNamed:string];
    return image;
 }
 @end