图片 360度旋转动画

pragma mark --- 旋转动画

• (void)rotate360DegreeWithImageView:(UIImageView )imageView
  {
  CABasicAnimation animation = [ CABasicAnimation
  animationWithKeyPath: @"transform" ];
  animation.fromValue = [NSValue valueWithCATransform3D:CATransform3DIdentity];
  //围绕Z轴旋转，垂直与屏幕
  animation.toValue = [ NSValue valueWithCATransform3D:
  CATransform3DMakeRotation(M_PI, 0.0, 0.0, 1.0) ];
  animation.duration = 5;
  //旋转效果累计，先转180度，接着再旋转180度，从而实现360旋转
  animation.cumulative = YES;
  animation.repeatCount = MAXFLOAT;
  //在图片边缘添加一个像素的透明区域，去图片锯齿
  CGRect imageRrect = CGRectMake(0, 0,imageView.frame.size.width, imageView.frame.size.height);
  UIGraphicsBeginImageContext(imageRrect.size);
  [imageView.image drawInRect:CGRectMake(1,1,imageView.frame.size.width-2,imageView.frame.size.height-2)];
  imageView.image = UIGraphicsGetImageFromCurrentImageContext();
  UIGraphicsEndImageContext();

  [imageView.layer addAnimation:animation forKey:nil];
  }

转载于:https://www.cnblogs.com/GJRBlog/p/5818803.html