在UIImagePickerController中获取相机预览的图像表示
问题描述：
当我使用标准 [view.layer renderInContext：UIGraphicsGetCurrentContext（）]; 方法将视图转换为iPhone相机模态视图中的图像时，我得到的只是黑色控件，相机预览的位置。
When I use the standard [view.layer renderInContext:UIGraphicsGetCurrentContext()]; method for turning views into images on the iPhone camera modal view, all I get is the controls with black where the camera preview was.
任何人都有解决方案吗？速度不是问题。
Anyone have a solution for this? Speed is not an issue.
答
不可能来自记录的api，但可能。在相机的子视图中找到PLCameraView视图，然后调用
Not possible from a documented api, but possible. Find the "PLCameraView" view in the camera's subviews, then call
CGImageRef img = (CGImageRef)[foundCameraView imageRef];
这将返回对相机所持图像的引用。
This will return a reference to the image that camera holds.