前言：iOS与MacOS的坐标系不同，iOS使用的是左手坐标系，坐标原点是在左上角，MacOS 使用的是右手坐标系，原点是在左下角。
简单的动画实现：矩形平移动画

- (void)viewDidLoad { [super viewDidLoad]; //1.创建一个layer CALayer *mylayer = [CALayer layer]; //2.设置layer属性 mylayer.bounds = CGRectMake(0, 0, 50, 80); mylayer.backgroundColor = [UIColor yellowColor].CGColor; mylayer.position = CGPointMake(50, 50); mylayer.anchorPoint = CGPointMake(0, 0); mylayer.cornerRadius = 20; //3.添加layer [self.view.layer addSublayer:mylayer]; self.mylayer = mylayer; }- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ //1.创建核心动画（剧本） CABasicAnimation *anima = [CABasicAnimation animation]; //设置剧本具体动画内容 //设置layer的position属性，即平移 anima.keyPath = @"position"; anima.fromValue = https://www.it610.com/article/[NSValue valueWithCGPoint:CGPointMake(0, 0)]; anima.toValue = [NSValue valueWithCGPoint:CGPointMake(200, 300)]; //设置动画执行完毕之后不删除动画 anima.removedOnCompletion = NO; //设置保存动画的最新状态 anima.fillMode = kCAFillModeForwards; //2.添加核心动画到layer（执行剧本） [self.mylayer addAnimation:anima forKey:nil]; }

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ //1.创建核心动画（剧本） CABasicAnimation *anima = [CABasicAnimation animation]; //设置剧本具体动画内容 //设置layer的position属性，即平移 anima.keyPath = @"position"; anima.fromValue = https://www.it610.com/article/[NSValue valueWithCGPoint:CGPointMake(0, 0)]; anima.toValue = [NSValue valueWithCGPoint:CGPointMake(200, 300)]; //设置动画执行完毕之后不删除动画 anima.removedOnCompletion = NO; //设置保存动画的最新状态 anima.fillMode = kCAFillModeForwards; //设置代理 anima.delegate = self; NSString *str = NSStringFromCGPoint(self.myLayer.position); NSLog(@"执行前：%@",str); //2.添加核心动画到layer（执行剧本） [self.mylayer addAnimation:anima forKey:nil]; }- (void)animationDidStart:(CAAnimation*)anim{ NSLog(@"开始执行动画"); }- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag{ NSString *str = NSStringFromCGPoint(self.myLayer.position); NSLog(@"执行后：%@"，str); } /* 输出结果： **2016-12-01 23:50:47.172 CAPropertyAnimationDemo[2829:99758] ****动画执行前：****{50, 50}** **2016-12-01 23:50:47.173 CAPropertyAnimationDemo[2829:99758] ****动画开始执行了** **2016-12-01 23:50:47.423 CAPropertyAnimationDemo[2829:99758] ****动画执行后：****{50, 50}** */

#import "ViewController.h" @interface ViewController ()@property (nonatomic,strong) CALayer *mylayer; @end@implementation ViewController- (void)viewDidLoad { [super viewDidLoad]; //1.创建一个layer CALayer *mylayer = [CALayer layer]; //2.设置layer属性 mylayer.bounds = CGRectMake(0, 0, 50, 80); mylayer.backgroundColor = [UIColor yellowColor].CGColor; mylayer.position = CGPointMake(50, 50); mylayer.anchorPoint = CGPointMake(0, 0); mylayer.cornerRadius = 20; //3.添加layer [self.view.layer addSublayer:mylayer]; self.mylayer = mylayer; }- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ //[self keyPathWithPositionAnimation]; //[self keyPathWithBoundsAnimation]; //[self keyPathWithTransformAnimation]; [self positionByTransformAnimation]; }#pragma mark - 平移动画 - (void)keyPathWithPositionAnimation{ //1.创建核心动画（剧本） CABasicAnimation *anima = [CABasicAnimation animation]; //设置剧本具体动画内容 //设置layer的position属性，即平移 //注意：如果没有设置起始位置"fromValue"的值，那么会从当前位置开始 anima.keyPath = @"position"; anima.fromValue = https://www.it610.com/article/[NSValue valueWithCGPoint:CGPointMake(0, 0)]; anima.toValue = [NSValue valueWithCGPoint:CGPointMake(200, 300)]; anima.duration = 2; //设置动画执行完毕之后不删除动画 anima.removedOnCompletion = NO; //设置保存动画的最新状态 anima.fillMode = kCAFillModeForwards; anima.delegate = self; NSString *string = NSStringFromCGRect(self.mylayer.frame); NSLog(@"动画执行前：%@",string); //2.添加核心动画到layer（执行剧本） [self.mylayer addAnimation:anima forKey:nil]; }#pragma mark - 缩放 - (void)keyPathWithBoundsAnimation{ //1.创建动画 CABasicAnimation *anima = [CABasicAnimation animation]; anima.keyPath = @"bounds"; //1.1设置动画执行时间 anima.duration = 2.0; //1.2设置保存动画的最新状态 anima.removedOnCompletion = NO; anima.fillMode = kCAFillModeForwards; //1.3修改属性,执行动画 anima.toValue = https://www.it610.com/article/[NSValue valueWithCGRect:CGRectMake(0, 0, 200, 200)]; //2.0添加动画到layer [self.mylayer addAnimation:anima forKey:nil]; }#pragma mark - 旋转 - (void)keyPathWithTransformAnimation{ CABasicAnimation *anima = [CABasicAnimation animation]; anima.keyPath = @"transform"; anima.duration = 2.0; anima.removedOnCompletion = NO; anima.fillMode = kCAFillModeForwards; anima.toValue = https://www.it610.com/article/[NSValue valueWithCATransform3D:CATransform3DMakeRotation(M_PI_2+M_PI_4, 1, 1, 0)]; [self.mylayer addAnimation:anima forKey:nil]; }#pragma mark - 平移的第二种方式 - (void)positionByTransformAnimation{ CABasicAnimation *anima = [CABasicAnimation animation]; anima.keyPath = @"transform"; anima.duration = 2.0; anima.removedOnCompletion = NO; anima.fillMode = kCAFillModeForwards; anima.toValue = https://www.it610.com/article/[NSValue valueWithCATransform3D:CATransform3DMakeTranslation(0, 100, 1)]; [self.mylayer addAnimation:anima forKey:nil]; }- (void)animationDidStart:(CAAnimation *)anim{ NSLog(@"动画开始执行了"); }- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag{ NSString *string = NSStringFromCGRect(self.mylayer.frame); NSLog(@"动画执行后：%@",string); }