CoreAnimation动画（CALayer动画）

 #pragma mark - CABasicAnimation动画
 - (IBAction)basicAnimation:(UIButton *)sender {

     // 1.创建动画对象
     CABasicAnimation *basicAnimation = [CABasicAnimation animation];

     // 2.告诉layer层需要执行什么样的动画【后面设置的内容为CALayer的相关属性】
     basicAnimation.keyPath = @"position";

     // 3.告诉layer从哪里来，要到哪里去
     basicAnimation.fromValue = [NSValue valueWithCGPoint:CGPointMake(, )];
     basicAnimation.toValue = [NSValue valueWithCGPoint:CGPointMake(, )];

     // 如果要实现移动后不回到原来的位置
     basicAnimation.removedOnCompletion = NO;
     basicAnimation.fillMode = kCAFillModeForwards;  // 保存动画状态的内容

     // 4.设置动画持续的时长
     basicAnimation.duration = 6.0f;

     // 5.将要执行的动画添加到CALayer上
     [self.imgView.layer addAnimation:basicAnimation forKey:@"basic"];

     /*****************  翻转效果  *********************/
     CABasicAnimation *basicAnimation1 = [CABasicAnimation animation];
     basicAnimation1.keyPath = @"transform";

     // 设置的翻转到的地方
     basicAnimation1.toValue = [NSValue valueWithCATransform3D:CATransform3DMakeRotation(M_PI_2, , , )];

     basicAnimation1.duration = 4.0f;
     [self.imgView.layer addAnimation:basicAnimation1 forKey:@"aaa"];

     // 根据key移除动画
     [self.imgView.layer removeAnimationForKey:@"basic"];
 }

 #pragma mark - CAKeyFrameAnimation动画
 - (IBAction)CAKeyFrameAnimation:(UIButton *)sender {

     // 1.创建对象
     CAKeyframeAnimation *keyFrameAnimation = [CAKeyframeAnimation animation];

     // 2.设置动画轨迹
     keyFrameAnimation.keyPath = @"transform.rotation";

     // 3.设置旋转角度(弧度的计算公式：度数 / 180 * M_PI)
     keyFrameAnimation.values = @[@(- / 180.0 * M_PI), @( / 180.0 * M_PI), @( / 180.0 * M_PI)];

     // 4.设置时长
     keyFrameAnimation.duration = 3.0f;

     // 5.添加动画到layer层
     [self.imgView.layer addAnimation:keyFrameAnimation forKey:@"ccc"];

 }

 #pragma mark - CAAnimationGroup动画
 - (IBAction)CAAnimationGroup:(UIButton *)sender {

     // 平移动画
     CABasicAnimation *basic1 = [CABasicAnimation animation];
     basic1.keyPath = @"transform.translation.y";
     basic1.toValue = @();

     // 翻转动画
     CABasicAnimation *basic2 = [CABasicAnimation animation];
     basic2.keyPath = @"transform.scale";
     basic2.toValue = @(0.5);

     // 旋转动画
     CABasicAnimation *basic3 = [CABasicAnimation animation];
     basic3.keyPath = @"transform.rotation";
     basic3.toValue = @(M_PI);

     // 创建管理各个动画的动画组
     CAAnimationGroup *group = [CAAnimationGroup animation];
     group.animations = @[basic1, basic2, basic3];
     group.duration = 5.0f;
     [self.imgView.layer addAnimation:group forKey:@"ddd"];
 }

 #pragma mark - CASpringAnimation动画
 - (IBAction)CASpringAnimation:(UIButton *)sender {

     CASpringAnimation *springAnimation = [CASpringAnimation animation];
     springAnimation.keyPath = @"transform.scale";
     springAnimation.fromValue = @;
     springAnimation.toValue = @0.25;
     springAnimation.duration = 3.0f;
     [self.imgView.layer addAnimation:springAnimation forKey:@"eee"];
 }