I've been fighting for AVAudioPlayer and AudioQueue object for 2 days,
Here is my Dev environment:
iPhone: 3.0Beta 5
Here is my scenario:
1. I need to use AVAudioPlayer to play a CAF with IMA4 data format. Including fast forward and rewind.
2. I need to use AudioQueue Object to record audio, because 3.0 has not go public yet.
3. A common scenario is record an audio A, then play the original audio A'(Not the one recorded) or vice versa.
The problem is I could NOT play the A' file after I record file A.
[theAVAudioPlayer play] always return NO, but [theAVAudioPlayer prepareToPlay] return YES.
This situation only happened after I used the AudioQueue Object for recording. If I did not record, it always worked fine.
About the clean up.
1. I released the theAVAudioPlayer object and set to nil each time after I finished playing.
2. I closed the audio file and deposed the AudioQueue Object each time after I finished recording.
Thanks to Vitali Molodtsov[Open the original post Needs login], the solution is reset the AudioSessionCategory to kAudioSessionCategory_MediaPlayback just after finish recording. Then every thing goes fine.
I think this is a bug for AVAudioPlayer. Each time, when we initialize an AVAudioPlayer object, it should set the correct AudioSessionCategory for us silently, but it doesn’t. So I’ve fired a bug for Apple.