I have a photo app that is using AV Foundation. I have setup a preview layer using AVCaptureVideoPreviewLayer that takes up the top half of the screen. So when the user is trying to take their photo, all they can see is what the top half of the screen sees.I have a photo app that is using AV Foundation.
阅读背景：
在AVCaptureVideoPreviewLayer中精确裁剪捕获的图像
来源：互联网
分享到：
