问题
I just created a tab bar controller in my project with 4 tabs in total.
It works fine between the 4 UIViewControllers.
However when I navigate to another UIViewController which is not one of the 4 tabs, the tab bar disappears.
I want it to be seen in every page. How can I do this?
回答1:
Ok.
The way this is done is by using navigation controllers on each tab.
So, you have your tab bar controller. Then each tab has a navigation controller first and the root view controller of the navigation controller is the page you want in that tab.
Now when you use a push segue the navigation controller pushes the new page and the tab bar controller remains in place.
来源：https://stackoverflow.com/questions/31087181/tab-bar-controller-is-not-in-all-uiviewcontrollers