问应该使用AVAudioPlayer在后台还是在主线程中播放声音？

EN

- (void)playingAudioOnSeparateThread: (NSString *) path
{
    if(_audioPlayer)
    {
       _audioPlayer = nil; // doing this while a sound is playing might crash... 
    }

    NSLog(@"start playing audio at path %@", path);
    NSError *error = nil;
    NSData *audioData = [NSData dataWithContentsOfFile:path];
    _audioPlayer = [[AVAudioPlayer alloc] initWithData:audioData error:&error];
    if (error == nil)
    {
        [_audioPlayer play];    
    }
}

- (void)playAudio:(NSString *)path
{
   [NSThread detachNewThreadSelector: @selector(playingAudioOnSeparateThread:) toTarget: self withObject: path];
}