在有tabBar的情况下，内部子VC的View布局会贯穿底部tabBar

[liwenDeng]

测试如下：

    self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
    UITabBarController *tab = [[UITabBarController alloc]init];
    ZJVc1Controller *VC1 = [[ZJVc1Controller alloc]init];
    ZJVc2Controller *VC2 = [[ZJVc2Controller alloc]init];
    ZJVc3Controller *VC3 = [[ZJVc3Controller alloc]init];
    ZJVc4Controller *VC4 = [[ZJVc4Controller alloc]init];

    UINavigationController *nav1 = [[UINavigationController alloc]initWithRootViewController:VC1];
    UINavigationController *nav2 = [[UINavigationController alloc]initWithRootViewController:VC2];
    UINavigationController *nav3 = [[UINavigationController alloc]initWithRootViewController:VC3];
    UINavigationController *nav4 = [[UINavigationController alloc]initWithRootViewController:VC4];

    [tab addChildViewController:nav1];
    [tab addChildViewController:nav2];
    [tab addChildViewController:nav3];
    [tab addChildViewController:nav4];

    self.window.rootViewController = tab;
    [self.window makeKeyWindow];

通过视图层可以看到，内部子VC的View布局会贯穿底部tabBar

[HeminWon]

是的，是会存在这个问题