Content Providers and Data Storage:
-
What is a Content Provider in Android, and what is its primary purpose?
- A Content Provider is a component that manages and provides access to a structured set of data. It allows you to share data between apps or access system data.
-
Explain the use of a URI in Android Content Providers.
- A Content Provider uses a URI (Uniform Resource Identifier) to uniquely identify a managed resource. It specifies the data to be queried or modified.
-
How can you use SQLite databases in Android applications?
- SQLite is a built-in database engine for Android. You can create, query, and manage databases using the SQLiteOpenHelper class and SQL commands.
-
What are the differences between SharedPreferences and SQLite databases for data storage in Android?
- Developers use SharedPreferences for storing simple key-value pairs, while SQLite databases handle structured, relational data storage.
-
Explain the concept of Android’s File I/O and how it can be used.
- Android’s File I/O allows you to read from and write to files in internal and external storage. It’s used for tasks like saving user data or reading configuration files.
-
How can you perform background data loading using Loaders in Android?
- Loaders provide a way to load data in the background and deliver results to the UI thread. They help manage data source changes and automatically handle configuration changes.
-
What is the purpose of the CursorLoader in Android, and how does it work with Content Providers?
- The CursorLoader is a type of Loader that automatically manages querying data from a Content Provider on a background thread and updating the UI with the results.
-
Explain the role of the ContentResolver in Android, and how is it used?
- The ContentResolver is a central point for interacting with a Content Provider. It allows you to query, insert, update, or delete data in the Content Provider.
