相关动画

1.设置View顺时针旋转

//音乐播放旋转

CABasicAnimation  *animation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];

//默认是顺时针效果，若将fromValue和toValue的值互换，则为逆时针效果

animation.fromValue = [NSNumber numberWithFloat:0.f];

animation.toValue =  [NSNumber numberWithFloat: M_PI *2];

animation.duration  = 5;//旋转时间5s一轮

animation.autoreverses = NO;

animation.fillMode =kCAFillModeForwards;

animation.repeatCount = MAXFLOAT; //如果这里想设置成一直自旋转，可以设置为MAXFLOAT，否则设置具体的数值则代表执行多少次

[bottomView.layer addAnimation:animation forKey:nil];

2.点击button放大再缩小的功能

-(void)rightButtonClick:(UIButton*)sender{

        sender.transform = CGAffineTransformIdentity;

        [UIView animateKeyframesWithDuration:0.5 delay:0 options:0 animations: ^{

         [UIView addKeyframeWithRelativeStartTime:0 relativeDuration:1 / 3.0 animations: ^{

        sender.transform = CGAffineTransformMakeScale(1.5, 1.5);

       }];

      [UIView addKeyframeWithRelativeStartTime:1/3.0 relativeDuration:1/3.0 animations: ^{

      sender.transform = CGAffineTransformMakeScale(0.8, 0.8);

      }];

       [UIView addKeyframeWithRelativeStartTime:2/3.0 relativeDuration:1/3.0 animations: ^{

      sender.transform = CGAffineTransformMakeScale(1.0, 1.0); 

       }];

       } completion:nil];

  }

3.