在iOS中旋转对象

Question

如何使对象（例如图像）永远旋转？

UIView.animateWithDuration(2.0, animations: ({

    self.Cube.transform = CGAffineTransformMakeRotation(320)

}))

有没有人有解决方案，真的很感激一些帮助。

Answer 1

尝试此功能可永久旋转图层。

func rotateLayer(layer:CALayer,duration:CFTimeInterval){
    let animation = CABasicAnimation(keyPath: "transform.rotation");
    animation.fromValue = 0;
    animation.duration = duration;
    animation.toValue = CGFloat(M_PI*2);
    animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionLinear);
    animation.repeatCount = Float.infinity;

    layer.addAnimation(animation, forKey: "rotation");
}

用法（持续时间是图层旋转360度所需的时间）：

rotateLayer(subView.layer, duration: 2);