编译时出现错误。Undefinedsymbolsforarchitecturearmv6:"_CGImageSourceCreateWithData",referencedfrom:___-[AVCamCaptureManagercaptureStillImage]_block_invoke_1inAVCamCaptureManager.o"_CGImageSourceCopyPropertiesAtIndex",referencedfrom:___-[AVCamCaptureManagercaptureStillImage]_block_invoke_1inAVCamCaptureM