旋转超级视图iPhone后移动子视图？

Question

I have a subview , it is UIImageView and I have a superview - uiview.

I add subview to superview. At begin, I move subview using code:

float difx = [[touches anyObject] locationInView:subview].x - [[touches anyObject] previousLocationInView:subview].x;

float dify = [[touches anyObject] locationInView:subview].y - [[touches anyObject] previousLocationInView:subview].y;

subview.transform = CGAffineTransformTranslate(subview.transform, difx, dify);

and it move very good!(it move towards a finger-cursor) .

But if i rotate superview, using code:

superview.transform = CGAffineTransformMakeRotation(degreesToRadians(angle));

at this time, subview does not move correct, not right! (it does not move towards a finger-cursor)?

Answer 1

尝试这个：

CGAffineTransformRotate(CGAffineTransform t, CGFloat angle)