Data Management

Many Android apps store and retrieve user information that persists beyond the life of the app.

To prepare for the AAD certification exam, Android developers should:

• Understand how to define data using Room entities
• Be able to access Room database with data access object (DAO)
• Know how to observe and respond to changing data using LiveData
• Understand how to use a Repository to mediate data operations
• Be able to read and parse raw resources or asset files
• Be able to create persistent Preference data from user input
• Understand how to change the behaviour of the app based on user preferences

Resources

• Codelabs -> Room, LiveData and ViewModel
• Codelabs -> Repository
• Codelabs -> Drawables, styles, and themes
• Codelabs -> Shared preferences
• Android Developers -> SharedPreferences.Editor
• Codelabs -> App settings