ios代码中添加一个旋转的收拾识别UIRotationGestureRecognizer功能,在对应的target方法中如果加入一下代码:
if (gestureRecognizer.state == UIGestureRecognizerStateBegan) {
UIView *piece = gestureRecognizer.view;
CGPoint locationInView = [gestureRecognizer locationInView:piece];
CGPoint locationInSuperview = [gestureRecognizer locationInView:piece.superview];
piece.layer.anchorPoint = CGPointMake(locationInView.x / piece.bounds.size.width, locationInView.y / piece.bounds.size.height);
piece.center = locationInSuperview;
}
请问这里的locationInView是指的哪个值,因为这里应该是有两个手指touch屏幕。