Added BaseActivity.java, an abstract class which inherits AppCompatActivity and sets up the behaviour of the main menu bar.
Added MainDrawerFragment.java which inflates navigation options as a fragment at the bottom of the screen onCreateView (when left button is pressed in the menu).
Added xml files to display the main menu and changed activity_main.xml to include activity_base.xml.
Changed MainActivity.java to inherit BaseActivity.java.
Added BaseActivity.java, an abstract class which inherits AppCompatActivity and sets up the behaviour of the main menu bar. Added MainDrawerFragment.java which inflates navigation options as a fragment at the bottom of the screen onCreateView (when left button is pressed in the menu). Added xml files to display the main menu and changed activity_main.xml to include activity_base.xml. Changed MainActivity.java to inherit BaseActivity.java.