iOS动画的几种实现方式：

一、CABasicAnimation基本动画（fromValue和toValue）

CABasicAnimation *animation = [CABasicAnimation new];
    // 设置动画要改变的属性
    animation.keyPath = @"transform.rotation.z";
    //animation.fromValue = @(_bgImgV.layer.transform.m11);
    // 动画的最终属性的值（转7.5圈）
    animation.toValue = @(M_PI*2);
    // 动画的播放时间
    animation.duration = 60;

    animation.repeatCount =LONG_MAX;
    // 动画效果同速度
    animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
    // 解决动画结束后回到原始状态的问题
    animation.removedOnCompletion = NO;
    animation.fillMode = kCAFillModeForwards;
   animation.delegate = self;
    // 将动画添加到视图bgImgV的layer上
    [romate.layer addAnimation:animation forKey:@"rotation"];

1485148932685541.png

二、CAKeyframeAnimation关键帧动画：

1、关键帧动画之path路径

//#pragma mark - 沿着路径运动!
- (void)demoPath{
  // 1.创建动画
  CAKeyframeAnimation *anim = [CAKeyframeAnimation animationWithKeyPath:@"transform.rotation.z"];

  // 2.设置路径
  anim.path = [UIBezierPath bezierPathWithOvalInRect:CGRectMake(10, 50, KSCREEN_WIDTH-20, KSCREEN_WIDTH)].CGPath;

  anim.repeatCount = CGFLOAT_MAX;

  // 沿着路径运动,修改了时长,做完运动会停一下!又接着走!
  anim.duration = 200;

  // 计算模式 -> 强制运动,匀速进行,不管路径有多远!
  anim.calculationMode = kCAAnimationPaced;
  // 旋转模式 -> 沿着路径,自行旋转 转的时候需要沿着路径的切线!进行转动!
  anim.rotationMode = kCAAnimationRotateAuto;

  // 3.添加
  [_romate.layer addAnimation:anim forKey:nil];


}

2、关键帧动画之values("之"字形动画)

 CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath:@"position"];
    
    //设置value
    
    NSValue *value1=[NSValue valueWithCGPoint:CGPointMake(100, 100)];
   
    NSValue *value2=[NSValue valueWithCGPoint:CGPointMake(200, 200)];
    
    NSValue *value3=[NSValue valueWithCGPoint:CGPointMake(100, 300)];
    
    NSValue *value4=[NSValue valueWithCGPoint:CGPointMake(200, 400)];
    
    animation.values=@[value1,value2,value3,value4];
    
    //重复次数 默认为1
    
    animation.repeatCount=MAXFLOAT;
    
    //设置是否原路返回默认为不
    
    animation.autoreverses = YES;
    
    //设置移动速度，越小越快
    
    animation.duration = 4.0f;
    
    animation.removedOnCompletion = NO;
    
    animation.fillMode = kCAFillModeForwards;
    
    animation.timingFunction=[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
    
    animation.delegate=self;
    
    //给这个view加上动画效果
    
    [moveView.layer addAnimation:animation forKey:nil];

1485149812874038.png

三、UIView 代码块调用：

1、layer的CATransform3DIdentity;

 romate.layer.transform = CATransform3DIdentity;
  [UIView animateWithDuration:20
                        delay:0
                      options:UIViewAnimationOptionAllowUserInteraction|
   UIViewAnimationOptionCurveLinear
                   animations:^{
                     romate.layer.transform = CATransform3DMakeRotation(M_PI/4, 0, 0, 1);
                   }
                   completion:NULL
   ];

2、view的CGAffineTransformIdentity；

   romate.transform = CGAffineTransformIdentity;
[UIView animateWithDuration:100
                        delay:0
                      options:UIViewAnimationOptionAllowUserInteraction|
   UIViewAnimationOptionCurveLinear
                   animations:^{
                     romate.transform = CGAffineTransformMakeRotation(M_PI);

                   }
                   completion:NULL
   ];