UIImage 的 setAnchorPoint？
所有，
这可能是非常基本的，但我找不到适合我的答案。
足够简单——我想围绕端点而不是中心旋转图像。我知道我真正需要的是能够设置图像的锚点，然后应用变换。
然而，我无法弄清楚如何设置图像的锚点（或者它应该是 UIImageView？）
UIImageView * imgv = nil;
UIImage * image;
imgv = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"greenbar.png"]];
image = [imgv image];
image.layer.anchorPoint = CGPointMake(0.5, 1.0);***-- Request for member 'layer' in something not a structure or union.***
imgv.image.layer.anchorPoint = CGPointMake(0.5, 1.0); ***-- Request for member 'layer' in something not a structure or union.***
imgv.layer.anchorPoint = CGPointMake(0.5, 1.0); ***-- Accessing unknown 'anchorPoint' component of a property.***
这让我发疯，所以请帮忙！ ：）
谢谢你！
:bp:
All,
This is probably very basic, but I cannot find an answer that works for me.
Simple enough -- I want to rotate an image around an endpoint, not the center. I know that all I really need is to be able to set the anchor point of the image and then apply the transform.
I cannot, however, figure out how to set the anchor point of the image (or should it be an UIImageView?)
UIImageView * imgv = nil;
UIImage * image;
imgv = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"greenbar.png"]];
image = [imgv image];
image.layer.anchorPoint = CGPointMake(0.5, 1.0);***-- Request for member 'layer' in something not a structure or union.***
imgv.image.layer.anchorPoint = CGPointMake(0.5, 1.0); ***-- Request for member 'layer' in something not a structure or union.***
imgv.layer.anchorPoint = CGPointMake(0.5, 1.0); ***-- Accessing unknown 'anchorPoint' component of a property.***
This is driving me crazy, so please help! :)
Thank you!
:bp:
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图层是 imageView 属性，因此以下行应该是正确的：
出现此错误的原因可能是您需要导入quartzcore标头：
layer is imageView property so the following line should be correct:
The reason you get this error may be that you need to import quartzcore header: