在我迁移到Swift 4之后，已经停止调用AVCaptureOutput函数了吗？

Question

在迁移Swift 4之后，已经停止调用以下函数。我找不到原因。

  func captureOutput(_ captureOutput: AVCaptureOutput!, didOutputSampleBuffer sampleBuffer: CMSampleBuffer!, from connection: AVCaptureConnection!) {

        Code

 }

Answer 1

在编写Xcode 9之后，启动编写函数，提出建议

      func captureOutput(_ output: AVCaptureOutput, didOutput sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) {

   code

}

建议和我代替

            func captureOutput(_ captureOutput: AVCaptureOutput!, didOutputSampleBuffer sampleBuffer: CMSampleBuffer!, from connection: AVCaptureConnection!) {

使用

           func captureOutput(_ output: AVCaptureOutput, didOutput sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) {

现在，它被称为。