swift4 – ‘AVCapturePhotoSettings’类型的值没有成员’availablePreviewPhotoPixelFormatTypes

概述@objc func launchCoreML() { let settings = AVCapturePhotoSettings() let previewPixelType = settings.availablePreviewPhotoPixelFormatTypes.first let previewFormat = [ kCVPixelBuffer

@objc func launchCoreML() {    let settings = AVCapturePhotoSettings()    let prevIEwPixelType = settings.availablePrevIEwPhotopixelFormatTypes.first    let prevIEwFormat = [        kCVPixelBufferPixelFormatTypeKey as String: prevIEwPixelType,kCVPixelBufferWIDthKey as String: 160,kCVPixelBufferHeightKey as String: 160    ] as [String : Any]    settings.prevIEwPhotoFormat = prevIEwFormat    cameraOutput.capturePhoto(with: settings,delegate: self)}

我有一个错误说：

Value of type ‘AVCapturePhotoSettings’ has no member
‘availablePrevIEwPhotopixelFormat’.

我正在使用Xcode 9的测试版.

解决方法 在beta 4中,这被重命名为__availablePrevIEwPhotopixelFormat.我还没看过beta 5. 总结

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