Question : How to put meter view for AVAudioPlayer while playing?

I want to put meter view for AVAudioPlayer while it playing audio files. I want to create meter view in interface builder and display it's movement according to the voice level of the audio.
   I have tried very much to create meter view in interface builder but I left in vex.
 
 
                     some help from anybody will be very useful to me.

Answer : How to put meter view for AVAudioPlayer while playing?

Sorry, I misunderstod the question.

Just now I opened this example. They work on low-level with the file and use OpenGL to draw it.

AVAudioPlayer does not provide such things. Copy the classes from this example and use them.