ca动画

//动画上下文
-(void)animationOfUIKit
{
    UIView *redView=[[UIView alloc]initWithFrame:CGRectMake(10, 10, 100, 100)];
    redView.backgroundColor=[UIColor redColor];
    
    [self.view addSubview:redView];
    //开始动画
    [UIView beginAnimations:@"test" context:nil];
    //动画时长
    [UIView setAnimationDuration:1];
    /*
     *要进行动画设置的地方
     */
    
    redView.backgroundColor=[UIColor blueColor];
    redView.frame=CGRectMake(50, 50, 200, 200);
    redView.alpha=0.5;
    
    
    //动画结束
    [UIView commitAnimations];
}
//通过代码块

-(void)animationOfBlock
{
    //初始化一个View，用来显示动画
    UIView *redView=[[UIView alloc]initWithFrame:CGRectMake(10, 10, 100, 100)];
    redView.backgroundColor=[UIColor redColor];
    
    [self.view addSubview:redView];
    
    [UIView animateWithDuration:1 //时长
                          delay:0 //延迟时间
                        options:UIViewAnimationOptionCurveEaseInOut//动画效果
                     animations:^{
                         
                         //动画设置区域
                         redView.backgroundColor=[UIColor blueColor];
                         redView.frame=CGRectMake(50, 50, 200, 200);
                         redView.alpha=0.5;
                         
                     } completion:^(BOOL finish){
                         //动画结束时调用
                         //............
                     }];
    
    
}




//CA动画
- (void)animationOfCABasicAnimation
{
    //创建一个CABasicAnimation对象
    CABasicAnimation *animation=[CABasicAnimation animation];
    //设置颜色
    animation.toValue=(id)[UIColor blueColor].CGColor;
    //动画时间
    animation.duration=1;
    //是否反转变为原来的属性值
    animation.autoreverses=YES;
    //把animation添加到图层的layer中，便可以播放动画了。forKey指定要应用此动画的属性
    [self.view.layer addAnimation:animation forKey:@"backgroundColor"];
}
//


//关键帧动画CAKeyframeAnimation

- (void)animationOfCAKeyframeAnimation
{
    CAKeyframeAnimation *animation=[CAKeyframeAnimation animation];
    //设置属性值
    animation.values=[NSArray arrayWithObjects:
//                      (id)self.view.backgroundColor,
                      (id)[UIColor yellowColor].CGColor,
                      (id)[UIColor greenColor].CGColor,
                      (id)[UIColor blueColor].CGColor,nil];
    animation.duration=3;
    animation.autoreverses=YES;
    //把关键帧添加到layer中
    [self.view.layer addAnimation:animation forKey:@"backgroundColor"];
}


//使用路径制作动画CAKeyframeAnimation

- (void)animationOfCAKeyframeAnimationPath
{
    //初始化一个View，用来显示动画
    UIView *redView=[[UIView alloc]initWithFrame:CGRectMake(10, 10, 20, 20)];
    redView.backgroundColor=[UIColor redColor];
    
    [self.view addSubview:redView];
    
    CAKeyframeAnimation *ani=[CAKeyframeAnimation animation];
    //初始化路径
    CGMutablePathRef aPath=CGPathCreateMutable();
    //动画起始点
    CGPathMoveToPoint(aPath, nil, 20, 20);
    CGPathAddCurveToPoint(aPath, nil,
                          160, 30,//控制点
                          220, 220,//控制点
                          240, 380);//控制点
    
    
    CGPathAddCurveToPoint(aPath, nil,
                          160, 30,//控制点
                          220, 220,//控制点
                          240, 380);//控制点
    
    ani.path=aPath;
    ani.duration=10;
    //设置为渐出
    ani.timingFunction=[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn];
    //自动旋转方向
    ani.rotationMode=@"auto";
    
    [redView.layer addAnimation:ani forKey:@"position"];
}