Android interview questions

Android interview questions : Interview Important question answer in Android

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01)  What is android?

Ans :- Android is a stack of software for mobile devices which has Operating System, middleware and some key applications. The application executes within its own process and its own instance of Dalvik Virtual Machine

02)  What is activity?

Ans:- A single screen in an application, with supporting Java code.

03)  What is intent in Android?

ans :- A class (Intent) will describes what a caller desires to do. The caller will send this intent to Android's intent resolver, which finds the most suitable activity for the intent. 

04)  What Programming languages does Android support for application development?

ans:- Android applications supports using Java Programming Language. which is coded in Java and complied using Android SDK.

05) What is a resource?

ans:- A user defined JSON, XML, bitmap, or other file, injected into the application build process, which can later be loaded from code.

06)  What is APK format?

ans:- The APK file is compressed AndroidManifest.xml file with extension .apk, Which have application code (.dex files), resource files, and other files which is compressed into single .apk file.

07)   What are the features of Android?

ans:- 

-> Components can be reused and replaced by the application framework.

-> Optimized DVM for mobile devices

-> SQLite enables to store the data in a structured manner.

-> Supports GSM telephone and Bluetooth, WiFi, 3G and EDGE technologies

-> The development is a combination of a device emulator, debugging tools, memory profiling and plug-in for Eclipse IDE