这不可行，但是我该说谁不能这样做。您可能有充分的理由播放声音。

It's not advisable, but who am I to say you can't do it. You may have a good reason to be playing sound.

如果您使用的是音频会话，请包含< AVFoundation / AVFoundation.h> 在文件的开头和

If you are using Audio Sessions, then include <AVFoundation/AVFoundation.h> at the start of your file and

[[AVAudioSession sharedInstance]
                setCategory: AVAudioSessionCategoryPlayback
                      error: nil];

应该可以解决问题。请注意，如果您播放音乐或声音，则iPod播放将暂停。

should do the trick. Note if you play music or sounds, then iPod playback will be paused.

完成此操作后，可能会在某个类的初始化中播放声音，你可以实例化这样的声音：

Once this has been done, probably somewhere in the initialization of one of your classes that plays the sounds, you can instantiate sounds like this:

// probably an instance variable: AVAudioPlayer *player;
NSString *path = [[NSBundle mainBundle] pathForResource...];
NSURL *url = [NSURL fileURLWithPath:path];
player = [[AVAudioPlayer alloc] initWithContentsOfURL:url];

完成后，您可以随时随地使用它：

When that's done, you can play with it any time you want with:

[player play]; // Play the sound
[player pause]; // Pause the sound halfway through playing
player.currentTime += 10 // skip forward 10 seconds
player.duration // Get the duration

还有其他不错的东西。查看 AVAudioPlayer 类引用。

And other nice stuff. Look up the AVAudioPlayer Class reference.