Android - Interview Questions and Answers

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21) What is the implicit intent in android?

The Implicit intent is used to invoke the system components.

22) What is explicit intent in android?

An explicit intent is used to invoke the activity class.

23) How to call another activity in android?

 Intent i = new Intent(getApplicationContext(), ActivityTwo.class); startActivity(i); 

24) What is service in android?

A service is a component that runs in the background. It is used to play music, handle network transaction, etc.

25) What is the name of the database used in android?

SQLite: An opensource and lightweight relational database for mobile devices.

26) What is AAPT?

AAPT is an acronym for android asset packaging tool. It handles the packaging process.

27) What is a content provider?

A content provider is used to share information between Android applications.

28) What is fragment?

The fragment is a part of Activity by which we can display multiple screens on one activity.

29) What is ADB?

ADB stands for Android Debug Bridge. It is a command line tool that is used to communicate with the emulator instance.

30) What is NDK?

NDK stands for Native Development Kit. By using NDK, you can develop a part of an app using native language such as C/C++ to boost the performance.

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