avaudio = [[AVAudioPlayer alloc] initWithData:data error:&error];

//    avaudio = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL URLWithString:cellView.path] error:nil];

    UInt32 doChangeDefaultRoute = 1;

    AudioSessionSetProperty (kAudioSessionProperty_OverrideCategoryDefaultToSpeaker, sizeof (doChangeDefaultRoute), &doChangeDefaultRoute);

播放声音特别小的解决方法