ios - 使用计时器逐渐旋转UIImageView

我正在尝试使用计时器逐渐旋转UIImageView，此代码将其旋转，但它似乎并未围绕图像的中心旋转，以及将CGAffineTransformMakeRotation添加到我的代码中似乎也停止了“主要”方法

#define radians(degrees) (degrees * M_PI/180)

NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:0.016 target:self selector:@selector(main) userInfo:nil repeats:YES];
-(void)main{
rotate++;
uiImageView.transform = CGAffineTransformMakeRotation(radians(rotate));
uiImageView.center = CGPointMake(uiImageView.center.x+1, uiImageView.center.y);
}

最佳答案

试试这个 :

开始动画:

  CABasicAnimation *rotation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
  rotation.fromValue = [NSNumber numberWithFloat:0];
  rotation.toValue = [NSNumber numberWithFloat:(2*M_PI)];
  rotation.duration = 1.0;// Speed
  rotation.repeatCount = HUGE_VALF;// Repeat forever.
  [imgViewCube.layer addAnimation:rotation forKey:@"Spin"];

停止动画:

  [imgViewCube.layer removeAnimationForKey:@"Spin"];

关于ios - 使用计时器逐渐旋转UIImageView，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/25521929/