swift ios 旋转动画

swift ios 旋转动画

func animate() {
    UIView.animate(withDuration: 2, delay: 0, options: .repeat) {
      let transformRotation = CATransform3DMakeRotation(Double.pi, 0, 0, 1)
      self.layer.transform = transformRotation
    }
  }

  func startAnimate() {
    let rotationAnimatioin = CABasicAnimation(keyPath: "transform.rotation.z")
    rotationAnimatioin.toValue = Double.pi * 2.0
    rotationAnimatioin.duration = 6
    rotationAnimatioin.repeatCount = 999999
    self.layer.add(rotationAnimatioin, forKey: "rotationAnimatioin")
  }
  func removeAnimate() {
    self.layer.removeAllAnimations()
    self.setImage(UIImage(named: "tab_play"), for: .normal)
  }