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?
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1Try hiding the status bar: http://stackoverflow.com/questions/4264072/how-to-hide-status-bar-in-iphone-application – Simon Woodside Nov 15 '12 at 04:28
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It's a red bar under the status but not the status bar. – Tab Nov 15 '12 at 05:06
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You can't do that. Every app, including the stock Voice Memos app, will have the bar when it uses the microphone.
Scott Berrevoets
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But it will appear and then disappear immediately, the view of my App will be shocked,how to avoid this? – Tab Nov 15 '12 at 07:02
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Because it takes a moment for the system to realize that recording stopped (which it automatically does when your app is suspended). – Scott Berrevoets Nov 15 '12 at 07:04