iOS 9.0选项卡栏自动隐藏，viewcontroller在推送中消失

Question

我有一个带有4个标签的Tabbar控制器。当我从选项卡中按下ViewController时，该选项卡将自动隐藏，并且在视图中不显示任何内容。但是ViewController包含一个带有数据的tableview。我还实现了tableview委托。我没有获取tableview代理日志。

在appdelegate中，使用选项（）完成启动

self.window=[[UIWindow alloc]initAnd Frame：[[[UIScreen主屏幕]边界]]；

self.homeScreen = [[ViewController alloc] initWithNibName:@"ViewController" bundle:nil];
self.rootNav = [[UINavigationController alloc]initWithRootViewController:self.homeScreen];

self.window.rootViewController = self.rootNav;

[self.window makeKeyAndVisible];

在此处加载选项卡栏：

 myAppDelegate.myTabBarController.selectedIndex = 0;
myAppDelegate.myTabBarController.tabBar.translucent = NO;
myAppDelegate.myTabBarController.tabBar.opaque = YES;


location_select *tab1 = [[location_select alloc] initWithNibName:@"location_select" bundle:nil];
tab1.tabBarItem.image = [UIImage imageNamed:@"Restaurants.png"];
location_select *tab2 = [[location_select alloc] initWithNibName:@"location_select" bundle:nil];
tab2.title = @"Cart";
tab2.tabBarItem.image = [UIImage imageNamed:@"Cart.png"];
Deal_ViewController *tab3 = [[Deal_ViewController alloc] initWithNibName:@"Deal_ViewController" bundle:nil];
tab3.title = @"Deals";
tab3.tabBarItem.image = [UIImage imageNamed:@"Deals.png"];

MoreViewController *tab4 = [[MoreViewController alloc] initWithNibName:@"MoreViewController" bundle:nil];
tab4.title = @"More";
tab4.tabBarItem.image = [UIImage imageNamed:@"More.png"];
myAppDelegate.myTabBarController.viewControllers = [NSArray arrayWithObjects:tab1,tab2,tab3,tab4,nil];
[myAppDelegate.rootNav pushViewController:myAppDelegate.myTabBarController animated:YES];

从选项卡4，我推送Profile_ViewController：

 Profile_ViewController *vc = [[Profile_ViewController alloc] initWithNibName:@"Profile_ViewController" bundle:[NSBundle mainBundle]];
 [self.navigationController pushViewController:vc animated:YES];

我已经在那里申请了：

myAppDelegate.myTabBarController.hidesBottomBarWhenPushed=NO; 
and 
[self.tabBarController setHidesBottomBarWhenPushed:NO];

在视图中，将显示纵断面图的视图控制器。什么都不管用。我只看到一个空白的白色屏幕。

Answer 1

您可能已经将您的体系结构保持为以下导航控制器---

你需要做这个标签栏控制器-

Answer 2

location_select *tab1 = [[location_select alloc] initWithNibName:@"location_select" bundle:nil];
tab1.tabBarItem.image = [UIImage imageNamed:@"Restaurants.png"];
location_select *tab2 = [[location_select alloc] initWithNibName:@"location_select" bundle:nil];
tab2.title = @"Cart";
tab2.tabBarItem.image = [UIImage imageNamed:@"Cart.png"];
Deal_ViewController *tab3 = [[Deal_ViewController alloc] initWithNibName:@"Deal_ViewController" bundle:nil];
tab3.title = @"Deals";
tab3.tabBarItem.image = [UIImage imageNamed:@"Deals.png"];

MoreViewController *tab4 = [[MoreViewController alloc] initWithNibName:@"MoreViewController" bundle:nil];
tab4.title = @"More";
tab4.tabBarItem.image = [UIImage imageNamed:@"More.png"];




UINavigationController *nav1 = [[UINavigationController alloc] initWithRootViewController:tab1];

UINavigationController *nav2 = [[UINavigationController alloc] initWithRootViewController:tab2];

UINavigationController *nav3 = [[UINavigationController alloc] initWithRootViewController:tab3];

UINavigationController *nav4 = [[UINavigationController alloc] initWithRootViewController:tab4];

myAppDelegate.myTabBarController.viewControllers = [NSArray arrayWithObjects:nav1,nav2,nav3,nav4,nil];
[myAppDelegate.rootNav pushViewController:myAppDelegate.myTabBarController animated:YES];

and then later on to push your vc to tab 4 you should do

Profile_ViewController *vc = [[Profile_ViewController alloc] initWithNibName:@"Profile_ViewController" bundle:[NSBundle mainBundle]];
[nav4 pushViewController:vc animated:YES];

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