ios - 围绕任意点旋转 UIImageView

Question

我有一个围绕其中心旋转的 UIImageView:

imageHorizon.layer.anchorPoint = CGPointMake(0.5, 0.5);
imageHorizon.transform = CGAffineTransformRotate(imageHorizon.transform, angleToRotate*(CGFloat)(M_PI/180));

有时我也会将此图像向左或向右移动，然后再次旋转。我想始终将旋转中心保持在同一点(实际上是 super View 的中心)。我怎样才能做到这一点 ？

干杯，

Answer 1

self.imgView.layer.anchorPoint = CGPointMake(0.0,1.0);
self.imgView.layer.position = CGPointMake(100,200.0);
CGAffineTransform cgaRotateHr = CGAffineTransformMakeRotation(-(3.141/4));
[self.imgView setTransform:cgaRotateHr];