摘要：
I’m writing this because – as of April 2011 – Apple’s official documentation is badly wrong. Some of their source code won’t even compile (typos that are obvious if they’d checked them), and some of their instructions are hugely over-complicated and yet simply don’t work.This is a step-by-step guide 阅读全文
摘要：
Q: How do I capture video frames from the camera as images using AV Foundation?A:How do I capture video frames from the camera as images using AV Foundation?To perform a real-time capture, first create a capture session by instantiating anAVCaptureSessionobject. You use anAVCaptureSessionobject to c 阅读全文