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Questions and Answers
Where is private primitive data stored in key-value pairs in Android?
Which storage option is used for storing public data on the device or external storage in Android?
In Android, where is structured data stored in a private database?
Which storage option allows data to be stored privately and made available publicly in Android?
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What is the storage option for storing private data on device memory in Android?
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Where should you save files if you want to ensure that neither the user nor other apps can access them?
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In which storage location are files world-readable, allowing any app to read them?
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Which type of storage is best for files that don't require access restrictions and that you want to share with other apps?
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Where are files stored that are removed by the system on app uninstall?
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Which method should be used to save new files that the user acquires through your app to a public directory?
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Study Notes
Android Data Storage Options
- Private primitive data in Android is stored in SharedPreferences, allowing key-value pairs for preferences or settings.
- Public data on the device or external storage is commonly stored in MediaStore, which allows access across apps.
- Structured data is held in a SQLite database, providing a private database for apps to manage relational data securely.
- File API enables data storage that can remain private while being made available publicly if necessary.
- Private data on device memory is stored in the app’s internal storage, ensuring data confidentiality.
- To prevent user or app access, files should be saved in the app's internal storage.
- Files stored in the app's external storage are world-readable, making them accessible to any app installed on the device.
- Shared storage is best suited for files that do not require access restrictions, ideal for sharing across apps.
- Files that get deleted when an app is uninstalled are typically stored in internal storage.
- To save new files acquired through your app to a public directory, use MediaStore API or the File API for proper permissions.
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Description
Test your knowledge of data storage in Android development with this quiz based on Lesson 9 of Android Developer Fundamentals V2. Explore topics such as Android file system, internal storage, external storage, SQLite database, and other storage options.
