Tech Review: Android GUI: Saturday, June 8, 2013: Navigation Drawer Creation

Trying to understand how the navigation drawer works.

Creating a Navigation Drawer

http://developer.android.com/training/implementing-navigation/nav-drawer.html

Download sample app

http://developer.android.com/shareables/training/NavigationDrawer.zip

class MainActivity

• onCreate()
  
• setContentView()
• with R.layout.activity_main
• the name of the XML file called activity_main that contains the ID for 
• drawer layout called drawer_layout
• frame layout called content_frame
• list view called left_drawer
• Set the contact view for the 

activity_main.xml

• contains the id/drawer_layout id of the DrawerLayout

ContextThemeWrapper

Where is the title being set?

• it is coming from
• resource
• app_name
• called by getTitle()

We get some view and store them in the activities private variables

Set up the drawer list view for left_drawer

• create drawer layout view based on the view defined by left_drawer
• set the adapter for the list based on
• main activity class object (this)
• the drawer list item xml (drawer_list_item)
• planet titles array
• set the on item click listener based on a drawer item click listener class

When an item in the list is click, do the following:

• create a planet fragment
• Where ARG_PLANET_NUMBER is 'planet_number'
• this doesn't look like it is being used
• creating a fragment creates a view

Where are they setting the image?

Where are the images stored?

The images are stored under drawable

• earth.jpg