ios录音-如何实现后台录音和推流功能

对于我们的app要求后台也实时录音并推流主要要注意两点:

保证app进入后台后实时录音

保证app进入后台后实时推流

1.设置应用为voip应用

打开-info.plist文件，加入如下的key

Required background modes，追加

//保证app进入后台后实时录音

App plays audio or streams audio/video using AirPlay

//保证app进入后台后实时推流

App provides Voice over IP services

2.将socket设置成异步模式，并将socket设置成VOIP类的，以便系统能够托管它。

CFStreamCreatePairWithSocket(NULL, (CFSocketNativeHandle)(mosq->sock), &readStream, NULL);

//保证不关闭原来的socket

CFReadStreamSetProperty(readStream, kCFStreamPropertyShouldCloseNativeSocket, kCFBooleanFalse);

//设置成voip socket

CFReadStreamSetProperty(readStream, kCFStreamNetworkServiceType, kCFStreamNetworkServiceTypeVoIP);

3.安装keepAliveTimeout handler，让系统每隔一段时间重新建立连接

UIApplication *application = [UIApplication sharedApplication];

[application setKeepAliveTimeout:600 handler:^{

[self reconnect];

}];