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Important Android Interview Questions And Answers

Q 1. What is an Action?
In Android an Action is what the intent sender wants to do or expected to get as a response.
Q 2. What is (Sticky) Intent?
A Sticky Intent is also a type of intent which allows the communication between a function and a service. Eg:- sendStickyBroadcast() is perform the operations after completion of intent also.

Q 3. What are the core components in the Android architecture?
There are 5 main key components under the Android architecture:
1. intent
2. services
3. content providers
5. notifications 
Q 4. What is a Fragment?
A fragment is a piece of an activity. It is modular in a sense that you can move around or combine with other fragments in a single activity. If you want to do turn your application 360 degrees you can do this by fragment.
Q 5. When does ANR occur?
ANR stands for Application Not Responding, basically it is  dialog box that displayed to the user based on two possible conditions. One is when there is no response to an input event within 5 seconds, and the other is when a broadcast receiver is not done executing within 7/10 seconds.
Q 6. What is an APK Format?
The Android packaging key is compressed with classes,UI's, and manifest, and these all files are compressed in a single file called as APK.

Q 7. How do you find any view element into your program?
Using findViewById we can find view element into our program.

Q 8. Which Kernel is used in Android?
Android is customized Linux 3.6 Kernel.

Q 9. What is a singleton class?
A class which can create only an object that object can be shareable to all other classes.

Q.10 What are the different storage available in android?
-Shared Preferences
-Internal Storage
-External Storage
-SQLite Database

Q.11 Have you ever worked on an android project?
Mention your project and advantages of the same, and explain as pr your project.

This post first appeared on Android Technology, please read the originial post: here

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Important Android Interview Questions And Answers


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