使用 AVAudioRecorder 在后台录制语音(当我点击主页按钮时) [英] Record voice in background(when i tapped home button) using AVAudioRecorder

问题描述

我是 IOS 开发的新手.我正在尝试使用 AVAudioRecorder 在后台录制用户语音，但我向 UIBackgroundModes 添加了音频"，但这无济于事.顺便说一句，一切都在前台工作完美.在后台时，计时器工作正常，但没有录制声音.我如何从背景中的麦克风录音?这可能吗?

I'm new in IOS development.I'm trying to record user voice in background using AVAudioRecorder but I add "audio" to UIBackgroundModes but this don't help. By the way, Everything works perfect in foreground.When in the background the timer works fine but voice is not recording. How can i record from microphone from background ? Is this possible?

推荐答案

可以.Skype 做到了这一点.

You can. Skype does this.

你大概需要在Info.plist中设置UIBackgroundModesaudio，你需要在您切换应用程序之前确保音频会话处于活动状态/正在运行/无论什么情况(假设您不会突然开始录制/播放音乐/当您的应用程序处于后台时).

You presumably need to set <key>UIBackgroundModes</key><array><string>audio</string></array> in Info.plist, and you need to make sure that the audio session is active/running/whatever before you switch apps (the assumption is that you won't suddenly start recording/playing music/whatever when your app is in the background).

文档说音频"可以让您在后台播放音频，但大概这也适用于录制音频.如果它不起作用，您可以尝试以下几种方法:

The docs say that "audio" lets you play audio in the background, but presumably this also applies to recording audio. If it doesn't work, there are a few things you could try:

• 同时设置voip"和audio".
• 播放静音(这可能是使用 Audio Queue API 最容易做到的).

此材料来自此处:用于录音应用程序的 iOS 多任务处理

额外资料见:只要我按下HOME"按钮，他的录音就会停止构建背景感知应用程序

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