iOS 少数doc，html文件在线无法打开，支持在线下载并打开

if (@available(iOS 13.0, *)) {
        self.tabBar.tintColor=[NSString colorAccent];
        UITabBarAppearance *appearance = [UITabBarAppearance new];
        appearance.stackedLayoutAppearance.normal.titlePositionAdjustment = UIOffsetMake(0, -5);
        appearance.stackedLayoutAppearance.selected.titlePositionAdjustment = UIOffsetMake(0, -5);
        self.tabBarItem.standardAppearance = appearance;
        
    }
    [[UINavigationBar appearance] setTintColor:[UIColor blackColor]];
    [[UITabBar appearance] setShadowImage:[[UIImage alloc] init]];
    [UITabBar appearance].layer.borderWidth = 0.0f;
    [UITabBar appearance].clipsToBounds = YES;
    [[UITabBarItem appearance] setTitleTextAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:LWidth(12)]} forState:UIControlStateNormal];
    ​

UITabBarController *hand=self.tabBarController; UITabBarItem * item=[UITabBarItem new]; if (hand.tabBar.items.count>1) { item=hand.tabBar.items[1]; } if ([[FCAppInfo shareManager].liveStatus isEqualToString:@"yes"]) { [item setBadgeValue:@"直播中"]; }else{ [item setBadgeValue:nil]; }

![](<> "点击并拖拽以移动")

​