How to hide the red bar under the iOS's status when recording?

问题

I used AVAudioRecorder to record the voice.I found that a red bar (just like the bar when you calling in background) will appear under the status bar sometimes when I alloc it and begin to record.How to hide it?

回答1:

You can't do that. Every app, including the stock Voice Memos app, will have the bar when it uses the microphone.

来源：https://stackoverflow.com/questions/13391311/how-to-hide-the-red-bar-under-the-ioss-status-when-recording