[XHLaunchAd showWithAdFrame:CGRectMake(0, 0,self.window.bounds.size.width, self.window.bounds.size.height-150) setAdImage:^(XHLaunchAd *launchAd) {
            
            //广告图片地址
            NSString *imgUrl = @"http://d3.freep.cn/3tb_160817150320fsa7569478.jpeg";
            //广告停留时间
            NSInteger duration = 6;
            //广告点击跳转链接
            NSString *openUrl = @"http://www.returnoc.com";
            //设置广告数据
            [launchAd setImageUrl:imgUrl duration:duration skipType:SkipTypeTimeText options:XHWebImageDefault completed:^(UIImage *image, NSURL *url) {
                
                //异步加载图片完成回调,若需根据图片尺寸,刷新广告frame,可在这里操作
                //launchAd.adFrame = ...;
                
            } click:^{
                
                //广告点击事件
                [[UIApplication sharedApplication] openURL:[NSURL URLWithString:openUrl]];
                
            }];
    } showFinish:^{
        
        //广告展示完成回调,设置window根控制器
        self.window.rootViewController = [[UINavigationController alloc] initWithRootViewController:[[ViewController alloc] init]];
        
    }];

/**
 *  清除图片本地缓存
 */
+(void)clearDiskCache;

/**
 *  获取缓存图片占用总大小(M)
 */
+ (float)imagesCacheSize;