搜索到标签栏和导航栏中的视图控制器

Question

1 tabbarcontroller connected to 3 navigation controllers. each navigation controller is connected to a view controller. in #3 a button segues modally to a view controller. i dont want the segue to be "push". is there anyway i can create a button in that view controller that segues back to #3?

I want a button in "randomviewcontroller" to perform a segue to "viewcontroller3" that is within a navigation controller and tabbarcontroller. "viewcontroller3" is the third tabbarbutton view.

so:

randomviewcontroller to perform segue to

TabBarController -(relationshipsegue)-> NavigationController -(rootview controllersegue)-> viewcontroller3

Example: a login view controller. you press login button, and it segues to the third tabbar button view (view that you see if you tap third icon on tabbar). third tabbar button is connected to a navigation controller that is rootview of a view controller.

Answer 1

如果tabbarviewcontrollers.viewcontrollers数组中的视图控制器都是导航控制器，而您只想以编程方式切换选项卡并显示该导航控制器的根视图控制器，那么您所需要做的就是切换到要选择的选项卡的索引选择：

tabBarController?.selectedIndex = 2 //or whatever index you want

Answer 2

I'm not sure I quite understand your question (and I don't see why you would have a login view controller in one of your tabs, most likely it would be in a view controller of its own).

Try connecting the button to the following code (assuming that the button is in the login tab)

-(IBAction) login:(id)sender {
     [self.tabBar setSelectedItem:[self.tabBar.items objectAtIndex:2]];
}

Let me know if this works.