我正在使用AVFoundation播放wav文件。但我无法让它发挥作用。也没有出现错误或警告。XCode是4.2，设备是iOS5。-(IBAction)playSelectedAlarm:(id)sender{UIButton*button=(UIButton*)sender;intbTag=button.tag;NSString*fileName=[NSStringstringWithFormat:@"%d23333",bTag];NSLog(@"%@",fileName);NSString*path=[[NSBundlemainBundle]pathForResource:file