In your Storyboard, you should drag out a Tab Bar Controller and use that as the initial view controller. Then, you should embed each of the view controllers attached to the Tab Bar Controller inside Navigation Controllers (Editor menu: Embed In > Navigation Controller). Afterward, your Storyboard should look something like this:
The tab bar controller holds a tab bar and will manage switching between the other views attached to it, while the navigation controllers will place Navigation Bars at the top of each tab and help you manage navigation within the tab.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…