手机震动效果--ios

1.实现手机震动效果，代码如下：

需要加入AudioToolbox.framework框架，并倒入头文件#import

- (void)viewDidLoad
{
    [super viewDidLoad];

    UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [btn setTitle:@"点击" forState:UIControlStateNormal];
    btn.frame = CGRectMake(100, 100, 200, 50);
    [btn addTarget:self action:@selector(shake:)     forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:btn];

// Do any additional setup after loading the view, typically from a nib.
}

- (void)shake:(id)sender
{
    AudioServicesPlayAlertSound(kSystemSoundID_Vibrate); //kSystemSoundID_Vibrate系统震动
}

注意：ipod是不支持震动的。