第一种，撞边框回弹效果
{
CGMutablePathRef starPath = CGPathCreateMutable();
CGPathMoveToPoint(starPath, NULL, 160.0f, 100.0f);
CGPathAddLineToPoint(starPath, NULL, 100.0f, 280.0f);
CGPathAddLineToPoint(starPath, NULL, 260.0f, 170.0f);
CGPathAddLineToPoint(starPath, NULL, 60.0f, 170.0f);
CGPathAddLineToPoint(starPath, NULL, 220.0f, 280.0f);
CGPathCloseSubpath(starPath);

CAKeyframeAnimation *animation = nil;
animation = [CAKeyframeAnimation animationWithKeyPath:@"position"];
[animation setDuration:10.f];
[animation setDelegate:self];
[animation setPath:starPath];
CFRelease(starPath);
starPath = nil;
[[_imageView layer] addAnimation:animation forKey:@"position"];

}

• (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag{
  [_drawButton setEnabled:YES];
  }

第二种，来回弹跳效果
{
[UIView beginAnimations:@"Slide Around" context:nil];
[UIView setAnimationDuration:1.0];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:@selector(viewAnimationDone:)];
[UIView setAnimationRepeatCount:3];
[UIView setAnimationRepeatAutoreverses:YES];

CGPoint center = [[self imageView] center];
center.y += 100;
[[self imageView] setCenter:center];
[UIView commitAnimations];

}

• (void)viewAnimationDone:(NSString *)name{
  [UIView beginAnimations:@"Show Button" context:nil];
  [[self button] setAlpha:1.0];
  [UIView commitAnimations];
  }

第三种，缩放效果
@property (nonatomic) CALayer *scaleLayer;
[_scaleLayer removeAnimationForKey:@"scaleAnimation"];//删除动画效果

• (void)initScaleLayer{
  _scaleLayer = [[CALayer alloc] init];
  _scaleLayer.backgroundColor = [UIColor blueColor].CGColor;
  _scaleLayer.frame = CGRectMake(60, 20 + 30, 50, 50);
  _scaleLayer.cornerRadius = 10;
  [self.view.layer addSublayer:_scaleLayer];

  CABasicAnimation *scaleAnimation = [CABasicAnimation animationWithKeyPath:@"transform.scale"];
  scaleAnimation.fromValue = [NSNumber numberWithFloat:1.0];
  scaleAnimation.toValue = [NSNumber numberWithFloat:1.5];//放大多少倍
  scaleAnimation.autoreverses = YES; //旋转后再旋转到原来的位置
  scaleAnimation.fillMode = kCAFillModeRemoved;
  scaleAnimation.repeatCount = MAXFLOAT;
  scaleAnimation.duration = 0.8;

  [_scaleLayer addAnimation:scaleAnimation forKey:@"scaleAnimation"];
  }
  第四种，翻转效果

• (void)initGroupLayer{
  CALayer *groupLayer = [[CALayer alloc] init];
  groupLayer.frame = CGRectMake(60, 340 + 100 +kYOffset, 50, 50);
  groupLayer.cornerRadius = 10;
  groupLayer.backgroundColor = [UIColor purpleColor].CGColor;
  [self.view.layer addSublayer:groupLayer];

  CABasicAnimation *scaleAnimation = [CABasicAnimation animationWithKeyPath:@"transform.scale"];
  scaleAnimation.fromValue = [NSNumber numberWithFloat:1.0];
  scaleAnimation.toValue = [NSNumber numberWithFloat:1.5];
  scaleAnimation.autoreverses = YES;
  scaleAnimation.repeatCount = MAXFLOAT;
  scaleAnimation.duration = 0.8;

  CABasicAnimation *moveAnimation = [CABasicAnimation animationWithKeyPath:@"position"];
  moveAnimation.fromValue = [NSValue valueWithCGPoint:groupLayer.position];
  moveAnimation.toValue = [NSValue valueWithCGPoint:CGPointMake(320 - 80, groupLayer.position.y)];
  moveAnimation.autoreverses = YES;
  moveAnimation.repeatCount = MAXFLOAT;
  moveAnimation.duration = 2;

  CABasicAnimation *rotateAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.x"];
  rotateAnimation.fromValue = [NSNumber numberWithFloat:0.0];
  rotateAnimation.toValue = [NSNumber numberWithFloat:6.0 * M_PI];
  rotateAnimation.autoreverses = YES;
  rotateAnimation.repeatCount = MAXFLOAT;
  rotateAnimation.duration = 2;

  CAAnimationGroup *groupAnimation = [CAAnimationGroup animation];
  groupAnimation.duration = 2;
  groupAnimation.autoreverses = YES;
  groupAnimation.animations = @[moveAnimation, scaleAnimation, rotateAnimation];
  groupAnimation.repeatCount = MAXFLOAT;

  [groupLayer addAnimation:groupAnimation forKey:@"groupAnimation"];
  }