ios - Xcode 11 beta -playbackState 仅在 iOS 13.0 或更高版本中可用

Question

我收到错误:“playbackState”仅在 iOS 13.0 或更高版本中可用

但是我的 iOS 11 应用程序中使用了 MPNowPlayingInfoCenter.playbackState。

这是 iOS 13 的问题吗？我现在可以处理吗？

在 iOS11 中:

@available(iOS 5.0, *)
open class MPNowPlayingInfoCenter : NSObject {

    open class func `default`() -> MPNowPlayingInfoCenter

    open var nowPlayingInfo: [String : Any]?

    open var playbackState: MPNowPlayingPlaybackState
}

现在在 iOS 13 中:

@available(iOS 5.0, *)
open class MPNowPlayingInfoCenter : NSObject {

    open class func `default`() -> MPNowPlayingInfoCenter

    open var nowPlayingInfo: [String : Any]?

    @available(iOS 13.0, *)
    open var playbackState: MPNowPlayingPlaybackState
}

Answer 1

我向 Apple 提交了错误报告，以下是 Apple 工程部门的回复:

This API is only supported on macOS and Catalyst. It was mistakenly marked available in a previous release, but it has been corrected. We were requested to not mark this API as available specifically for Catalyst, but macOS platform is the only place where this API works.