//创建一个帧动画
CAKeyframeAnimation *anim = [CAKeyframeAnimation animation];
//设置属性
anim.keyPath = @"transform.rotation";
//设置属性值
anim.values = @[@(angle2Rad(-5)) ,@(angle2Rad(5)),@(angle2Rad(-5))];
anim.repeatCount = MAXFLOAT;
anim.duration = 0.25;
[self.imageView.layer addAnimation:anim forKey:nil];
![](https://img.haomeiwen.com/i8533761/4b29bb5e201dc59a.gif)
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