Skype for business iOS SDK:无法启动audioservice

Question

我正在集成Skype的iOS SDK，当我尝试从对话助手启动audioservice时。

do {
    try self.conversationHelper.conversation.audioService.start()
}
catch {
    print(error.localizedDescription)
}

我得到了这个错误。声音既没有传入也没有传出。(但视频服务运行正常。)

2016-11-12 21:22:00.012 test-skype[669:1aa91fc40] INFO APPLICATION CUcmpAudioModality.cpp:230 CUcmpAudioModality::start(AudioType) called.
2016-11-12 21:22:00.014 test-skype[669:1aa91fc40] INFO APPLICATION CUcmpAudioModality.cpp:259 CUcmpAudioModality::start(AudioType, CUriString) called.
2016-11-12 21:22:00.015 test-skype[669:1aa91fc40] INFO APPLICATION CUcmpAudioVideoModality.cpp:2799 CUcmpAudioModality::queryCapability on StartVoIP returned false because modality state is InConversation
2016-11-12 21:22:00.017 test-skype[669:1aa91fc40] ERROR APPLICATION CUcmpAudioModality.cpp:267 Unable to start audio with error (587726849)

如何解决这个问题?请帮助。

Answer 1

我设法找到一个解决方案。我需要初始化AVAudioSession并首先将类别设置为AVAudioSessionCategoryPlayAndRecord以使其工作。

let audioSession: AVAudioSession = AVAudioSession.sharedInstance()
do{
    try audioSession.setCategory(AVAudioSessionCategoryPlayAndRecord)
}
catch let errorForCategory as Error{
    print(errorForCategory.localizedDescription)
}
do{
    try audioSession.setMode(AVAudioSessionModeVoiceChat)
}
catch let errorForMode as Error {
    print(errorForMode.localizedDescription)
}

编辑:如果你计划在视频聊天中使用Airplay，你需要将模式设置为本文档中提到的AVAudioSessionModeVideoChat。https://developer.apple.com/library/content/documentation/Audio/Conceptual/AudioSessionProgrammingGuide/AudioSessionBasics/AudioSessionBasics.html

do {
    try audioSession.setMode(AVAudioSessionModeVideoChat)
}
catch let errorForMode as Error {
    print(errorForMode.localizedDescription)
}