Lesson 4: User Interaction (4.3: Using the App Bar and Tabs for Navigation)

Task 1. Add an Up button for ancestral navigation

Task 2. Use tab navigation with swipe views

2.1 Create the layout for tab navigation

2.2 Create a layout and class for each fragment

2.3 Add a PagerAdapter

2.4 Inflate the Toolbar and TabLayout

2.5 Use PagerAdapter to manage screen views