Android Development Essential Training: Manage Data with Kotlin

Introduction

• Mobile apps for a data-driven world
• What you should know

1. Package Static Data in JSON Files

• Check out the exercise files from GitHub
• Model an entity in a Kotlin data class
• Read files from resources
• Read files from assets
• Parse JSON strings with Moshi
• Map JSON and class property names

2. Get Data from a Web Service

• Acquire data in a repository class
• Share data with LiveData objects
• Network permissions and status
• Add Retrofit and coroutine dependencies
• Define a Retrofit interface
• Retrieve remote data with Retrofit

3. Display Data in a RecyclerView

• Add a RecyclerView to a fragment
• Create a RecyclerView item layout
• Create a RecyclerView adapter class
• Display images dynamically with Glide
• Add a dynamic background to data items
• Refresh data with a swipe gesture

4. Display Selected Data Items

• Handle RecyclerView click events
• Create and navigate to a detail fragment
• Add an Up button to a secondary fragment
• Pass data in a shared ViewModel
• Display details with data binding
• Customize data bindings with an adapter

5. Read and Write Files

• Save files to internal storage
• Read files from internal storage
• Manage permissions in a splash screen
• Request external storage permissions
• Save files to external storage

6. Manage SQLite Databases with Room

• Define a database table with Room
• Define SQL operations in a DAO interface
• Define an SQLite database with Room
• Insert and retrieve data with Room

7. Persist Data in Shared Preferences

• Manage shared preferences with code
• Use preferences to manage display
• Create a shared preferences activity
• Read default shared preferences

Conclusion

• Next steps