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Questions and Answers
Where is private primitive data stored in key-value pairs in Android?
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?
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?
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?
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?
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?
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?
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?
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?
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?
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.
