swift - 类型 'AVCapturePhotoOutput' 的值没有成员 'captureStillImageAsynchronously'

Question

请帮我重构这段代码，它不起作用，我在互联网上搜索但没有找到任何解决方案。我不能自己重构它。

这一行:

imageOutput.captureStillImageAsynchronously(from: connection) { (sampleBuffer, error) -> Void in

抛出这个错误:

Value of type 'AVCapturePhotoOutput' has no member 'captureStillImageAsynchronously'

  imageOutput.captureStillImageAsynchronously(from: connection) { (sampleBuffer, error) -> Void in
    if (sampleBuffer == nil || error != nil) {
      DispatchQueue.main.async {
        completion(nil, error)
      }
      return
    }

    guard let data = AVCapturePhotoOutput.jpegPhotoDataRepresentation(forJPEGSampleBuffer: sampleBuffer!, previewPhotoSampleBuffer: nil)  else {
      DispatchQueue.main.async {
        completion(nil, StillImageError.noData)
      }
      return
    }

    guard let image = UIImage(data: data) else {
      DispatchQueue.main.async {
        completion(nil, StillImageError.noImage)
      }
      return
    }

    var saver = ImageSaver()

        .onSuccess { image, assetId in

            completion(assetId, nil)

        }
        .onFailure { error in

    }
    saver = saver.save(image, filter:  nil)

  }

Answer 1

captureStillImageAsynchronously(from:completionHandler:) 是 AVCaptureStillImageOutput 的函数，而不是 AVCapturePhotoOutput。

由于 AVCaptureStillImageOutput 自 iOS 10 起已被弃用，因此您应该改用 AVCapturePhotoOutput，就像您在代码中所做的那样。它有一个具有相同用例的函数:capturePhoto(with:delegate:)。

有关 AVCapturePhotoOutput 用法的更多信息，check out this question .