Android Software Developer Interview Questions

Android Interview Questions

Do you want to apply for a Job as an Android Developer?, well this time I shared the most popular questions I got while I was in marketing. I hope they are helpful for you.

If I can help with something, just send me an email and I will be happy to help.

Android Framework

• Describe the architecture of Android Operating System
• Difference between fragment and activity
• What is an sticky broadcast receiver
• Elements of an Intent
• Different types of services
• What is ANR and how to avoid it
• Define Async Task
• Can you run Async Task in parallel
• Different types of components from Android Framework
• What is a nine patch image
• How do you disable execution of a service from outside of the application
• What types of Context exist in Android
• What is a memory leak?
• What type of context do you pass when you are creating a new view
• Difference between IntentService and Service
• How do you communicate multiple threads in Android
• How many .dex files can you have in an android application
• What is DDMS, what do you use it for?
• What are the essential items in an Android Project?
• What is a weak reference?
• Explain the life cycle of an activity
• Difference between Activity and fragment?
• What is Dalvik Virtual Machine?
• What is ART?
• What is ADB?
• What is a .dex file?
• Tell me about the best practices you know to program in Android
• What are the use of DDMS?
• How do you create Unit Testing in Android?
• How do you use a AlarmManager?
• How do you configure an alarm manager to fire every day at a specific time of the day?
• What is a ViewHolder?
• What happen if I define two activities with an intent filter with the category of launcher?

Core Java

• What are the ways to create a Thread?
• What is a dead lock
• What is multi inheritance?, is allow in java?
• What is final, finalize()
• Define Static
• What is an abstract class?
• What is generics
• What is polymorphism
• What is encapsulation

Design Patterns

• What is Singleton Design Pattern
• What is Thread Safe Singleton Design Pattern
• What is Abstract Factory Design Pattern
• What is Strategy Design Pattern
• Tell me some design patterns that you have applied in Android

Web Services

Difference between REST and SOAP

How do you decide between REST and SOAP?

Algorithms

• How do you remove duplicated elements in an array of ints
• How to get the middle element of an Simple Linked List in one pass
• How to know if a strings are palindromes
• How to determine if two strings are anagrams
• How do you get the common parent of two given nodes? Every node has a reference for its parents, and the root node has a reference to null.

           A

          / \ \

         B   C  M

        /     \

       D       E

      / \

     F   G

          \

           H