AVAudioPlayer *player = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"水滴声音" ofType:@"mp3"]] error:nil];//使用本地URL创建
player.volume = 1;
player.numberOfLoops = 1;//默认只播放一次
_player = player;
[player prepareToPlay];
[self performSelector:@selector(yinliang) withObject:nil afterDelay:2];
[player play];//播放
