标签: xcode swift
我收到了一个奇怪的错误
[AVCaptureInput attachToFigCaptureSession:]_block_invoke, file /SourceCache/EmbeddedAVFoundation/EmbeddedAVFoundation- 887.52/Aspen/AVCaptureInput.m, line 129.
这是什么错误?怎么回事?
当我致电session.startRunning() session为AVCaptureSession!
session.startRunning()
session
AVCaptureSession!