CATransform3DMakeRotation 设置锚点和位置。 iOS7 查看位置错误

Question

CATransform3DMakeRotation 设置锚点和位置 iOS7 查看位置错误... 但是 iOS8 和 iOS9 没有这个问题.. 为什么？

-(void)viewDidAppear:(BOOL)animated
{

[self setAnchorPoint:CGPointMake(0.5, 1) forView:self.chieldImageView];

}

-(void)setAnchorPoint:(CGPoint)anchorPoint forView:(UIView *)view
{

CGPoint newPoint = CGPointMake(view.bounds.size.width * anchorPoint.x,
                               view.bounds.size.height * anchorPoint.y);

CGPoint oldPoint = CGPointMake(view.bounds.size.width * view.layer.anchorPoint.x,
                               view.bounds.size.height * view.layer.anchorPoint.y);

newPoint = CGPointApplyAffineTransform(newPoint, view.transform);
oldPoint = CGPointApplyAffineTransform(oldPoint, view.transform);

CGPoint position = view.layer.position;

position.x -= oldPoint.x;
position.x += newPoint.x;

position.y -= oldPoint.y;
position.y += newPoint.y;

view.layer.position = position;
view.layer.anchorPoint = anchorPoint;
}

Answer 1

这可能是由于使用了自动布局，在 iOS8 上他们修复了它。
没有那么多解决方案，一种是将要转换的视图保留在容器视图中。您在容器视图上使用约束来定位它，并在包含的（需要转换的视图）中通过将 -translatesAutoresizingMaskIntoConstraints 保持为 YES 将其添加为子视图。
查看 Matt book.

CATransform3DMakeRotation 设置锚点和位置。 iOS7 查看位置错误

CATransform3DMakeRotation Setting AnchorPoint and position. iOS7 View position mistake

objective-c

ios

anchorpoint