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1.
What is Android, and how is it different from other mobile operating systems?
Answer:
Android Fundamentals
- 2.
What programming languages can you use to develop Android applications?
Answer: - 3.
Explain the Android application architecture.
Answer: - 4.
Describe the Android application lifecycle.
Answer: - 5.
What is an Activity in Android, and what is its lifecycle?
Answer: - 6.
What are Intents, and how are they used in Android?
Answer: - 7.
Explain the concept of Services in Android.
Answer: - 8.
Define a Broadcast Receiver and its use in Android apps.
Answer: - 9.
What are Content Providers, and when should you use them?
Answer: - 10.
What file holds the application’s AndroidManifest.xml in an Android project?
Answer: - 11.
How does the view system work in Android?
Answer: - 12.
What is the difference between a File, a Class, and an Activity in Android?
Answer: - 13.
What is the Dalvik Virtual Machine?
Answer: - 14.
What is an APK file in Android?
Answer: - 15.
How do you manage memory in Android applications?
Answer:
Android UI/UX
- 16.
What are the different types of Layouts available in Android?
Answer: - 17.
Explain the role of Adapters in Android.
Answer: - 18.
How do you create custom Views and custom Layouts?
Answer: - 19.
What is the design pattern that Android’s UI architecture follows?
Answer: - 20.
Discuss the differences between a Fragment and an Activity.
Answer: - 21.
Explain the concept of the Android Application UI thread.
Answer: - 22.
What are “dp”, “dip”, “sp”, “px” and when to use each?
Answer: - 23.
How do you handle screen orientation changes in Android?
Answer: - 24.
How can you implement multi-screen support for different device sizes and densities?
Answer: - 25.
What are Material Design principles in Android?
Answer:
Android Data Management
- 26.
What are SharedPreferences, and how do you use them?
Answer: - 27.
How does the SQLite database work in Android?
Answer: - 28.
Explain how to use Room Persistence Library for data management.
Answer: - 29.
What is a Loader in Android?
Answer: - 30.
Discuss how to use a ContentResolver in Android.
Answer: - 31.
Can you use raw SQL queries in Android? How?
Answer: - 32.
How do you handle data caching in Android applications?
Answer:
Android Networking
- 33.
Explain the HTTP networking stack used by Android.
Answer: - 34.
What libraries are available in Android for networking operations?
Answer: - 35.
How do you perform asynchronous network operations?
Answer: - 36.
What is the use of the Volley library?
Answer: - 37.
Explain the use of Retrofit in Android for API access.
Answer: - 38.
How do you troubleshoot a slow network request in an Android application?
Answer: - 39.
What is OkHttp, and why would you use it?
Answer:
Android Advanced Topics
- 40.
What is ProGuard, and why is it important in Android development?
Answer: - 41.
Discuss Android NDK and its use cases.
Answer: - 42.
What are some common use cases for using AsyncTask?
Answer: - 43.
What are loaders, and why are they useful?
Answer: - 44.
Explain the JobScheduler API.
Answer: - 45.
How does the Doze feature affect background tasks and services?
Answer: - 46.
What is a SurfaceView?
Answer: - 47.
Discuss how you’d implement gesture detection in Android.
Answer:
Android Security
- 48.
How does Android secure the data and information within an application?
Answer: - 49.
What is Android Keystore system?
Answer: - 50.
What are the different protection levels in permission declaration?
Answer: - 51.
How do you securely store sensitive information on Android?
Answer: - 52.
What is HTTPS, and how do you implement it on Android?
Answer:
Android Testing
- 53.
Explain the Android testing framework.
Answer: - 54.
What is Espresso, and how is it used for UI testing?
Answer: - 55.
What is the difference between local tests and instrumentation tests?
Answer: - 56.
How do you perform unit testing in Android?
Answer: - 57.
What is Robolectric, and when would you use it?
Answer: - 58.
Discuss UI Automator and its role in Android testing.
Answer:
Android Performance
- 59.
How can you improve the performance and responsiveness of an Android application?
Answer: - 60.
What is the Android Profiler?
Answer: - 61.
Describe the StrictMode tool.
Answer: - 62.
What are some common causes of memory leaks in Android applications?
Answer: - 63.
How do you diagnose and resolve ANRs (Application Not Responding)?
Answer: - 64.
What practices should be followed to reduce APK size?
Answer:
Android App Components and Navigation
- 65.
What is a PendingIntent?
Answer: - 66.
How do you implement a Navigation Drawer in Android?
Answer: - 67.
What is the purpose of the
android:launchModeattribute?Answer: - 68.
Describe the Android notification system.
Answer: - 69.
How do you pass data between activities in Android?
Answer: - 70.
What is the ViewModel and LiveData architecture components?
Answer:
Android Architecture
- 71.
What are the components of Android Architecture Components?
Answer: - 72.
How would you describe a good app architecture?
Answer: - 73.
What is the MVP (Model-View-Presenter) pattern?
Answer: - 74.
What is MVVM (Model-View-ViewModel) in the context of Android?
Answer: - 75.
Discuss the Repository pattern and its importance.
Answer:
Android Libraries and Frameworks
- 76.
What is the Android Support Library, and why is it important?
Answer: - 77.
What is Data Binding, and how does it simplify development?
Answer: - 78.
What is Dagger2, and what are the advantages of using it?
Answer: - 79.
What are Android Jetpack components?
Answer: - 80.
What is Koin and how does it differ from Dagger in dependency injection?
Answer:
Android OS and Compatibility
- 81.
How do you support different versions of Android with your application?
Answer: - 82.
What is Android Jetpack’s role in supporting different devices and OS versions?
Answer: - 83.
How do you handle deprecated methods or APIs?
Answer: - 84.
Discuss multi-platform development for Android and other platforms.
Answer: - 85.
How does Android’s ART differ from Dalvik?
Answer:
Android Best Practices
- 86.
What are key considerations for internationalizing and localizing an Android app?
Answer: - 87.
Discuss accessibility in Android applications.
Answer: - 88.
What are some best practices for code organization in Android?
Answer: - 89.
Explain the principles of Clean Architecture in the context of Android.
Answer: - 90.
How can you use MVVM to make an application more testable?
Answer:
Modern Android
- 91.
What are Android App Bundles (AAB)?
Answer: - 92.
Discuss Kotlin and why it has become popular for Android development.
Answer: - 93.
What are Coroutines in Kotlin, and how do they simplify asynchronous operations?
Answer: - 94.
What is Jetpack Compose, and how does it change UI development on Android?
Answer: - 95.
How does Android handle background processing with WorkManager?
Answer:
Android Third-Party Integrations
- 96.
How do you integrate with third-party services in Android?
Answer: - 97.
What are the steps to include a Custom Font in an Android app?
Answer: - 98.
Discuss integration of analytics tools like Firebase Analytics or Google Analytics.
Answer: - 99.
How do you implement social media sharing in an Android application?
Answer: - 100.
What considerations must be taken when integrating payment gateways into Android apps?
Answer:
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