从storyBoard的里面加载控制器的方法

这个方法不常用,容易被忽略,但是用起来还是蛮方便的

@implementation HMAdViewController

- (void)viewDidLoad

{

    [super viewDidLoad];

    

    // 1.背景图片

    UIImageView *bg = [[UIImageView alloc] init];

    bg.image = [UIImage imageNamed:@"Default"];

    bg.frame = self.view.bounds;

    [self.view addSubview:bg];

    

    // 2.广告图片(真实的广告图片应该要先下载广告图片)

    UIImageView *ad = [[UIImageView alloc] init];

    ad.image = [UIImage imageNamed:@"ad"];

    ad.width = 280;

    ad.height = 300;

    ad.centerX = self.view.width * 0.5;

    ad.y = 60;

    [self.view addSubview:ad];

    

    // 3.2s后调到下一个主界面

    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{

        UIWindow *window = [UIApplication sharedApplication].keyWindow;

        UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];

        window.rootViewController = [storyboard instantiateViewControllerWithIdentifier:@"Main"];

    });

}

@end