状态栏的隐藏以及再现需动画过度效果较好

- (void)viewWillDisappear:(BOOL)animated

{

    [self.navigationController setNavigationBarHidden:NO animated:animated];

}

- (void)viewWillAppear:(BOOL)animated

{

    [self.navigationController setNavigationBarHidden:YES animated:animated];

}

引导页的UIScrollView 用  JT3DScrollView 滑动界面漂亮（pod search 'JT3DScrollView'）

初始化时：

self.scrollView.effect = JT3DScrollViewEffectCards;

    self.scrollView.delegate = self;

往 JT3DScrollView 上面添加图片就OK了。

/**

 *  更换自定义pageControl

 */

- (void)scrollViewDidScroll:(UIScrollView *)scrollView

{

    

    self.pageControlImage.image = [UIImage imageNamed:[NSString stringWithFormat:@"%d_footprints",(int)(self.scrollView.contentOffset.x / SCREEN_WIDTH + .5) + 1]];

}