本地记录文件为空 [agora.io] Swift答案

【问题标题】：Local record file is empty [agora.io] Swift本地记录文件为空 [agora.io] Swift
【发布时间】：2021-09-08 18:34:12
【问题描述】：

我正在从 AgoraKit 的示例中创建一个音频调用应用程序，并且我正在尝试为其添加录音功能，但我遇到了问题。我的录音文件每次都是空的。 AgoraKit 创建了一个录音文件，但似乎无法填充数据。

func initializeAgoraEngine() {
    // Initializes the Agora engine with your app ID.
    agoraKit = AgoraRtcEngineKit.sharedEngine(withAppId: AppID, delegate: self)
    let documentsDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
    let audioURL = documentsDirectory.appendingPathComponent("agorasdk.log")

    agoraKit.setLogFile(audioURL.path)
}

func joinChannel() {
    // Allows a user to join a channel.
    agoraKit.joinChannel(byToken: Token, channelId: "demoChannel", info: nil, uid: nil) { [unowned self] (sid, uid, elapsed) -> Void in
        // Joined channel "demoChannel"
        self.agoraKit.setEnableSpeakerphone(true)
        UIApplication.shared.isIdleTimerDisabled = true

        let documentsDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
        let audioURL = documentsDirectory.appendingPathComponent("audio.aac")

        let config = AgoraAudioRecordingConfiguration()
        config.filePath = audioURL.path
        config.recordingQuality = .medium
        config.recordingPosition = .mixedRecordingAndPlayback //tried other options no luck
        config.recordingSampleRate = 16000//tried 32000 and 44100
        let result = agoraKit.startAudioRecording(withConfig: config) //result always 0 according to documentation that is success
    }
}

毕竟我调用了 stopAudioRecording() 并且它也返回 0。所以根据文档，一切都很好，但是文件是空的。

【问题讨论】：

标签： swift agora.io

【解决方案1】：

我刚刚在本地尝试过，它对我来说没问题，这是我的设置，我使用的文档目录有点不同，但看不出为什么会改变任何东西：

AgoraRtcEngine_iOS (3.5.0.3)

let documentsDirectory = try! FileManager.default.url(
  for: .documentDirectory,
  in: .userDomainMask, appropriateFor: nil,
  create: true
)
let baseDirectory = documentsDirectory.appendingPathComponent(
  "Audio/", isDirectory: true
)
try! FileManager.default.createDirectory(
  atPath: baseDirectory.path,
  withIntermediateDirectories: true
)
let audioURL = baseDirectory.appendingPathComponent(
  "test.aac", isDirectory: false
)

// start recording is the same as your settings

我还在 Info.plist 中添加了这些属性，以便文件浏览更容易：

【讨论】：