Application Development with Swift 2 (Video 21)

This video tutorial explains how to use segues in iOS app development. It covers embedding view controllers within a UI navigation controller, adding a UI bar button item, and implementing a basic segue to navigate between view controllers. The tutorial demonstrates creating a segue in the storyboard and adding a bar button to the navigation bar. It concludes with a test run of the implemented segue and a preview of the next video, which will focus on passing objects between view controllers.

What is the primary purpose of a segue in iOS development?

• To navigate between view controllers

• To handle user input

• To manage memory usage

• To style the user interface

Where can a UI bar button item be placed in an iOS app?

• In the footer

• In a toolbar or navigation bar

• In the main view

• In the app settings

What is the first step in creating a segue between view controllers?

• Writing custom code

• Creating a button in the object library

• Adding a new view controller

• Configuring the app settings

How do you connect a UI bar button item to a view controller using a segue?

• By writing a custom script

• By dragging it to the interface file

• By using the app settings

• By control-clicking and dragging to the view controller

What happens when you click the bar button item in the navigation controller?

• The app crashes

• A new view controller is shown

• The app settings open

• Nothing happens