CoreAnimation--CALayer的动画

核心动画中所有类都遵守CAMediaTiming

CAAnaimation和CAPropertyAnimation都是抽象类，本身不具备动画效果，必须用它的子类才有动画效果。

CAAnimationGroup是个动画组，可以同时进行缩放，旋转。

CABasicAnimation基本动画，做一些简单效果。

CAKeyframeAnimation帧动画，做一些连续的流畅的动画。

CATransition是转场动画，界面之间跳转都可以用转场动画。

ios layer 动画－（transform.scale篇）

x轴缩放：
CABasicAnimation *theAnimation;
theAnimation=[CABasicAnimation animationWithKeyPath:@"transform.scale.x"];
theAnimation.duration=8;
theAnimation.removedOnCompletion = YES;
theAnimation.fromValue = [NSNumber numberWithFloat:1];
theAnimation.toValue = [NSNumber numberWithFloat:0.5];
[yourView.layer addAnimation:theAnimation forKey:@"animateTransform"];

y轴缩放：
CABasicAnimation *theAnimation;
theAnimation=[CABasicAnimation animationWithKeyPath:@"transform.scale.y"];
theAnimation.duration=8;
theAnimation.removedOnCompletion = YES;
theAnimation.fromValue = [NSNumber numberWithFloat:1];
theAnimation.toValue = [NSNumber numberWithFloat:0.5];
[yourView.layer addAnimation:theAnimation forKey:@"animateTransform"];

x轴，y轴同时按比例缩放：
CABasicAnimation *theAnimation;
theAnimation=[CABasicAnimation animationWithKeyPath:@"transform.scale"];
theAnimation.duration=8;
theAnimation.removedOnCompletion = YES;
theAnimation.fromValue = [NSNumber numberWithFloat:1];
theAnimation.toValue = [NSNumber numberWithFloat:0.5];
[yourView.layer addAnimation:theAnimation forKey:@"animateTransform"];

以上缩放是以view的中心点为中心缩放的，如果需要自定义缩放点，可以设置卯点：
//中心点
[yourView.layer setAnchorPoint:CGPointMake(0.5, 0.5)];

//左上角
[yourView.layer setAnchorPoint:CGPointMake(0, 0)];

//右下角
[yourView.layer setAnchorPoint:CGPointMake(1, 1)];

ios layer 动画－（transform.rotation篇）

x轴旋转：
CABasicAnimation *theAnimation;
theAnimation=[CABasicAnimation animationWithKeyPath:@"transform.rotation.x"];
theAnimation.duration=8;
theAnimation.removedOnCompletion = YES;
theAnimation.fromValue = [NSNumber numberWithFloat:0];
theAnimation.toValue = [NSNumber numberWithFloat:3.1415926];
[yourView.layer addAnimation:theAnimation forKey:@"animateTransform"];

y轴旋转：
CABasicAnimation *theAnimation;
theAnimation=[CABasicAnimation animationWithKeyPath:@"transform.rotation.y"];
theAnimation.duration=8;
theAnimation.removedOnCompletion = YES;
theAnimation.fromValue = [NSNumber numberWithFloat:0];
theAnimation.toValue = [NSNumber numberWithFloat:3.1415926];
[yourView.layer addAnimation:theAnimation forKey:@"animateTransform"];

z轴旋转：
CABasicAnimation *theAnimation;
theAnimation=[CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
theAnimation.duration=8;
theAnimation.removedOnCompletion = YES;
theAnimation.fromValue = [NSNumber numberWithFloat:0];
theAnimation.toValue = [NSNumber numberWithFloat:3.1415926];
[yourView.layer addAnimation:theAnimation forKey:@"animateTransform"];

以上缩放是以view的中心点为中心缩放的，如果需要自定义缩放点，可以设置卯点：
//中心点
[yourView.layer setAnchorPoint:CGPointMake(0.5, 0.5)];

//左上角
[yourView.layer setAnchorPoint:CGPointMake(0, 0)];

//右下角
[yourView.layer setAnchorPoint:CGPointMake(1, 1)];

可设参数：

theAnimation.repeatCount = 0;
theAnimation.autoreverses = NO;

旋转的另一种实现：（以下代码绕z轴旋转180度）
    [self.topViewController.view.layer setAnchorPoint:CGPointMake(0.5, 0.5)];
    [self.topViewController.view.layer setTransform:CATransform3DMakeRotation(0, 0, 0, 1)];
    [UIView animateWithDuration:8 delay:0.0f options:UIViewAnimationOptionAllowUserInteraction | UIViewAnimationCurveEaseIn animations:^{
        [self.topViewController.view.layer setTransform:CATransform3DMakeRotation(3.1415926, 0, 0, 1)];
    } completion:^(BOOL finished) {
    }];

 
 
CATransition 过渡动画  

CATransition *animation = [CATransition animation];

animation.duration = 0.3;

animation.type = @"cube"; //转场动画type见后文

animation.subtype = kCATransitionFromLeft;

[[self.tableView layer] addAnimation:animation forKey:@"myAnimation"];

　　animation.fillMode = kCAFillModeBackwards;
　　animation.startProgress = 0.01;
　　animation.endProgress = 0.99;
使用过渡动画，实现在同一个view上，左推，右推等各种动画，节省一个view；

参数说明：

setType:可以返回四种类型：

　　kCATransitionFade淡出

　　kCATransitionMoveIn覆盖原图

　　kCATransitionPush推出

　　kCATransitionReveal底部显出来

setSubtype:也可以有四种类型：

　　kCATransitionFromRight；

　　kCATransitionFromLeft(默认值)

　　kCATransitionFromTop；

　　kCATransitionFromBottom

[animation setType:@"type类型"]; 可用的type类型主要有：

　　pageCurl 向上翻一页

　　pageUnCurl 向下翻一页

　　rippleEffect 滴水效果

　　suckEffect 收缩效果，如一块布被抽走

　　cube 立方体效果

　　oglFlip 上下翻转效果

/** 转场动画type一览表 **/

fade 交叉淡化过渡

push 新视图把旧视图推出去

moveIn 新视图移到旧视图上面

reveal 将旧视图移开,显示下面的新视图

cube 立方体翻滚效果

oglFlip 上下左右翻转效果

suckEffect 收缩效果，如一块布被抽走

rippleEffect 水滴效果

pageCurl 向上翻页效果

pageUnCurl 向下翻页效果

cameraIrisHollowOpen 相机镜头打开效果

cameraIrisHollowClose 相机镜头关闭效果

转自：http://blog.163.com/it__man/blog/static/137199904201301722556447/