ReplayKit 初始警报选择的委托方法是什么？

当用户第一次决定使用 ReplayKit 时，会出现一条警报。它给出了 3 个选择：

-Record Screen and Microphone
-Record Screen Only
-Don’t Allow

有哪些委托方法可以帮助我找出用户选择的选项？

没有任何委托方法来确定用户选择哪个选项。你必须使用完成处理程序 https://developer.apple.com/documentation/replaykit/rpscreenrecorder/2867291-startcapture and .is麦克风已启用 https://developer.apple.com/documentation/replaykit/rpscreenrecorder/1620987-ismicrophoneenabled以确定所选择的选项。

一旦选择了一个选项completionHandler叫做：

1. 如果用户选择Don't Allow那么error代码将运行

2. 如果用户选择Record Screen & Microphone then .isMicrophoneEnabled将被设置为true

3. 如果用户选择Record Screen Only then .isMicrophoneEnabled将被设置为false

在 - 的里面completionHandler您可以检查他们的选择，然后从那时起做您需要做的任何事情。阅读 2 条评论completionHandler下面的部分代码。

let recorder = RPScreenRecorder.shared()

recorder.startCapture(handler: { [weak self](buffer, bufferType, err) in

    // ...

}, completionHandler: { (error) in

    // 1. If the user chooses "Dont'Allow", the error message will print "The user declined application recording". Outside of that if an actual error occurs something else will print
    if let error = error {
        print(error.localizedDescription)
        print("The user choose Don't Allow")
        return
    }

    // 2. Check the other 2 options
    if self.recorder.isMicrophoneEnabled {

        print("The user choose Record Screen & Microphone")

    } else {

        print("The user choose Record Screen Only")
    }
})

安全的方法可以让您知道如何应对每个错误代码 https://developer.apple.com/documentation/replaykit/rprecordingerrorcode是对错误代码使用 switch 语句：

}, completionHandler: { (error) in

    if let error = error as NSError? {

        let rpRecordingErrorCode = RPRecordingErrorCode(rawValue: error.code)
        self.errorCodeResponse(rpRecordingErrorCode)
    }
})

func errorCodeResponse(_ error: RPRecordingErrorCode?) {

    guard let error = error else { return }

    switch error {

    case .unknown:
        print("Error cause unknown")
    case .userDeclined:
        print("User declined recording request.")
    case .disabled:
        print("Recording disabled via parental controls.")
    case .failedToStart:
        print("Recording failed to start.")
    case .failed:
        print("Recording error occurred.")
    case .insufficientStorage:
        print("Not enough storage available on the device.")
    case .interrupted:
        print("Recording interrupted by another app.")
    case .contentResize:
        print("Recording interrupted by multitasking and content resizing.")
    case .broadcastInvalidSession:
        print("Attempted to start a broadcast without a prior session.")
    case .systemDormancy:
        print("Recording forced to end by the user pressing the power button.")
    case .entitlements:
        print("Recording failed due to missing entitlements.")
    case .activePhoneCall:
        print("Recording unable to record due to active phone call.")

    default: break
    }
}