AVCaptureDevice.Format.supported
2020-10-29 本文已影响0人
刘明洋
问题
SwiftPrivate versions of these API by prepending each API with double underscore (__). For example, change AVCaptureDevice.Format.supportedColorSpaces to AVCaptureDevice.Format.__supportedColorSpaces.
参考资料
Undefined symbols for supportedFlashModes in AVCapturePhotoOutput
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Apple 回复：AVFoundation capture APIs 用Swift3或4 在Xcode9中被不经意标注成private
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AVFoundation API 暂时不能用:
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AVCaptureDevice.Format.supportedColorSpaces -
AVCaptureDevice.supportedFlashModes -
AVCapturePhotoOutput.availablePhotoPixelFormatTypes -
AVCapturePhotoOutput.availableRawPhotoPixelFormatTypes -
AVCapturePhotoSettings.availablePreviewPhotoPixelFormatTypes
它在Xcode 12.0中使用模拟器时是有问题的，对真机设备来说，没问你题。
解决方法：
#if targetEnvironment(simulator)
let pixelFormat = photoSettings.__availablePreviewPhotoPixelFormatTypes.first!
#else
let pixelFormat = photoSettings.availablePreviewPhotoPixelFormatTypes.first!
#endif
