1、iPhone系统音效
AudioServicesPlaySystemSound(1007); //其中1007是系统声音的编号，想用其他音效更改编号就可以了
2、用户自己制作的提示音
//文件路径
NSString *path = [[NSBundle mainBundle] pathForResource:@"send" ofType:@"mp3"];
//播放音效
SystemSoundID soundID;
NSURL *filePath = [NSURL fileURLWithPath:path isDirectory:NO];
AudioServicesCreateSystemSoundID((__bridge CFURLRef)filePath, &soundID);
AudioServicesPlaySystemSound(soundID);
