Question

我不确定我是否缺少功能或某些功能，但是当用户电话响起或者他们询问siri或任何阻止我的应用程序音频播放的内容时，我不确定。用户完成任务后，它不会重新开始播放我的应用。

我想知道我是否缺少某个功能，或者Apple iOS应用程序不能做到这一点吗？

我认为这可能与以下原因有关：

func setupRemoteTransportControls() {
   // Get the shared MPRemoteCommandCenter
    let commandCenter = MPRemoteCommandCenter.shared()

    // Add handler for Play Command
    commandCenter.playCommand.addTarget { [unowned self] event in
        if self.player?.rate == 0.0 {
            self.player?.play()
            return .success
        }
        return .commandFailed
    }

    // Add handler for Pause Command
    commandCenter.pauseCommand.addTarget { [unowned self] event in
        if self.player?.rate == 1.0 {
            self.player?.pause()
            return .success
        }
        return .commandFailed
    }

   // self.nowplaying(artist: "Anna", song: "test")


}

我发现我需要添加这部分，但是我怎么称呼它呢？

func handleInterruption(notification: Notification) {

        guard let userInfo = notification.userInfo,
            let interruptionTypeRawValue = userInfo[AVAudioSessionInterruptionTypeKey] as? UInt,
            let interruptionType = AVAudioSession.InterruptionType(rawValue: interruptionTypeRawValue) else {
            return
        }

        switch interruptionType {
        case .began:
            print("interruption began")
        case .ended:
            print("interruption ended")
        default:
            print("UNKNOWN")
        }

    }

Answer 1

您需要将音频会话设置为AVAudioSessionCategoryPlayback。如果您未设置此模式，则将使用默认模式AVAudioSessionCategorySoloAmbient。

您可以在didFinishLaunching中设置模式。

例如

func application(_ application: UIApplication,
                 didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    
    // Get the singleton instance.
    let audioSession = AVAudioSession.sharedInstance()
    do {
        // Set the audio session category, mode, and options.
        try audioSession.setCategory(.playback, mode: .default, options: [])
    } catch {
        print("Failed to set audio session category.")
    }
    
    // Other post-launch configuration.
    return true
}

您还需要实现interruption observation

func setupNotifications() {
    // Get the default notification center instance.
    let nc = NotificationCenter.default
    nc.addObserver(self,
                   selector: #selector(handleInterruption),
                   name: AVAudioSession.interruptionNotification,
                   object: nil)
}

@objc func handleInterruption(notification: Notification) {
    // To be implemented.
}

用户拨打电话后快速开始播放音乐

1 个答案: