Search test library by skills or roles
⌘ K

About the test:

The Android Online Test evaluates a candidate's ability to design Android user interfaces, implement navigation strategies, use themes and styles, schedule tasks, trigger events, create input forms, save user data, interact with REST APIs, and design advanced UX with fragments, widgets and sensors. The test uses scenario-based MCQ questions to assess experience with debugging, testing, staging and publishing apps on the Play store. The test is customized to include code-tracing MCQ questions to evaluate Java or Kotlin fundamentals and coding questions to evaluate hands-on Java or Kotlin programming skills based on the requirements of your open role.

Covered skills:

  • Android core (Activities; Layouts; Views)
  • Handling user interactions
  • Android user experience design (Lifecycle; Navigation)
  • Background tasks and triggers
See all covered skills

9 reasons why
9 reasons why

Adaface Android Online Test is the most accurate way to shortlist Android Developers



Reason #1

Tests for on-the-job skills

The Android Online test saves expensive engineering time by filtering out unqualified Android programmer candidates. The Adaface Android Online test screens candidates for the typical skills hiring manager look for in an Android developer:

  • Java or Kotlin fundamentals
  • Object-oriented programming in Java or Kotlin
  • Core UI components: dialogues, spinners, text fields, buttons
  • Android building blocks: Activities and Activity lifecycle
  • Designing layouts and views: constraint layout, recycler views, list views, scroll views, card views
  • Developing background tasks, triggering events, sending notifications
  • Enhancing user experience with fragments- when, why and how to use fragments
  • Saving, retrieving and updating user data using shared preferences, SQLite and Room
  • Reading and parsing raw resources or asset files
  • Use popular libraries to play videos, download website data, manipulate images for interactive components
  • Using themes and styles: Material design principles
  • MVC and MVVM architectures
  • Using Reactive View Models with Presenters
  • Developing miniature app views with widgets
  • Getting data from device sensors: accelerometer, location
  • Working with databases and backend servers
  • Managing user permissions
  • Exception handling in Android
  • Debugging and testing Android apps; system logs, breakpoints, inspecting variables, automated tests

Along with these Android-specific skills, the test includes MCQ questions and coding questions to evaluate hands-on Java or Kotlin programming skills.

Reason #2

No trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface ->
Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

These are just a small sample from our library of 10,000+ questions. The actual questions on this Android Online Test will be non-googleable.

🧐 Question

Easy

Intent & Activity
Solve
We want to pass a value to next activity in Android. Which of the following options are the right way to do it?
 image

Easy

Linear Layout
Solve
Check the following XML layout file. 
 image
What will the UI for this layout file look like?
1. An edit text to the right of a text view and a button beneath them
2. An edit text to the right of a text view and a button to the right of the text view
3. A text view, an edit text beneath it and the button beneath the edit text
4. An edit text to the left of a text view and a button beneath it

Easy

Custom Exception
Exceptions
Solve
What does the following code output?
 image

Medium

Holding References
Solve
What does the following Java code output?
 image

Medium

Abstract Interface
OOPs
Interfaces
Solve
Given following interface:
 image
Which of these are correct classes?
 image

Medium

Garbage Collection
Garbage Collection
Solve
After which line is "bs" object, created on Line 4, eligible for garbage collection?
 image

Medium

Static Init Blocks
OOPs
Solve
What does the following code output?
 image
1) G A B E D H
2) G B A D E H
3) G B A D E H C F
4) C F G A B E D H
5) C F G B A D E H
6) G C F A B E D H
7) G C F B A D E H

Easy

Registration Queue
Logic
Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount.
For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition.
⚠️⚠️⚠️ Note:
- The first line of the input is the length of the array. The second line contains all the elements of the array.
- The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function.
- You need to "print" the final result (not return it) to pass the test cases.

For the example discussed above, the input will be:
5
20 70 -40 30 -10

Your code needs to print the following to the standard output:
20 70 30 -40 -10

Medium

Longest Road
logic
hashmaps
Solve
A startup company E-Motors is building driverless automated cars. The car contains a sensor that checks the road quality for the next N meters to decide the optimal speed at which the cars should move. We are given recorded data by the sensor in the form of an array, where each element of the array is the rating given to 1 meter of the road in sequence. 

The rating given by the sensor is from 1 to 100, where 100 represents the road with the best condition, and any rating above 60 is optimal. Find the longest stretch of road in meters that is categorized as optimal by the sensor.

The input is an array of "strings" which needs to be converted from string to integer/number inside the function.

Medium

Visitors Count
Strings
Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. 
Example:

Input:
WWMMWWCCC

Expected Output: 
4W3C2M

Explanation: 
‘W’ has the highest count, then ‘C’, then ‘M’. 
⚠️⚠️⚠️ Note:
- The input is already parsed and passed to a function.
- You need to "print" the final result (not return it) to pass the test cases.
- If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’.
- If any of them have the same count, the output should follow this order - M, W, C.
🧐 Question🔧 Skill

Easy

Intent & Activity
2 mins
Android
Solve

Easy

Linear Layout
2 mins
Android
Solve

Easy

Custom Exception
Exceptions
2 mins
Java
Solve

Medium

Holding References
2 mins
Java
Solve

Medium

Abstract Interface
OOPs
Interfaces
2 mins
Java
Solve

Medium

Garbage Collection
Garbage Collection
2 mins
Java
Solve

Medium

Static Init Blocks
OOPs
2 mins
Java
Solve

Easy

Registration Queue
Logic
30 mins
Coding
Solve

Medium

Longest Road
logic
hashmaps
25 mins
Coding
Solve

Medium

Visitors Count
Strings
30 mins
Coding
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Intent & Activity
Android
Easy2 mins
Solve
Linear Layout
Android
Easy2 mins
Solve
Custom Exception
Exceptions
Java
Easy2 mins
Solve
Holding References
Java
Medium2 mins
Solve
Abstract Interface
OOPs
Interfaces
Java
Medium2 mins
Solve
Garbage Collection
Garbage Collection
Java
Medium2 mins
Solve
Static Init Blocks
OOPs
Java
Medium2 mins
Solve
Registration Queue
Logic
Coding
Easy30 minsSolve
Longest Road
logic
hashmaps
Coding
Medium25 minsSolve
Visitors Count
Strings
Coding
Medium30 minsSolve
Reason #4

1200+ customers in 75 countries

Brandon

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!


Brandon Lee, Head of People, Love, Bonito

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Android Online Test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Android Online Test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

Reason #7

Detailed scorecards & comparative results

Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

Reason #9

Advanced Proctoring


How to evaluate Senior Android Developers

The questions for senior developers focus on advanced Android topics like:

  • Using Dependency Injection to implement the Separation of Concerns principle (Dagger and Hilt)
  • Implementing RecyclerView in various orientations
  • Maintaining Backward Compatibility
  • Avoiding "Spaghetti Code" and "God Classes"
  • Single-Activity vs. Multi-Activity trade-offs
  • Concurrency and Multithreading challenges (Blocked threads, Thread pool, Async task)
  • Thread Class, Garbage Collector, Memory Leaks
  • Advanced libraries like RxJava, Retrofit
  • Advanced functionality with deep links, in-app notifications, and push notifications.
  • Designing advanced graphics and animations (custom views, drawing on a canvas, clipping canvas objects, and using shaders)
  • Accessibility Services in Android
  • Experience with Jetpack Compose- layouts, state, animation, navigation, testing, accessibility and side-effects
  • Optimizing app performance- measuring and improving rendering, memory performance, data compression, batter use, network calls

Along with these the questions to evaluate Java/ Kotlin fundamentals will be of higher difficulty level.

What roles can I use the Android Online Test for?

  • Android Developer
  • Junior Android Developer
  • Senior Android Developer
  • Kotlin Android Developer
  • Java Android Developer
  • Android Software Engineer

What topics are covered in the Android Online Test?

Java or Kotlin Basics
OOPs in Java or Kotlin
Android UI components (text fields, buttons, form components)
Activities (lifecycle and data sharing)
Fragments
Views (ListViews, RecyclerView, CardView, Navigation View)
MVC and MVVM architecture
Data binding
Constraint layout
Connecting with REST APIs
Downloading data
Images
Videos
Dependency Injection (Dagger and Hilt)
Content Provider
Broadcast Receiver
Location Services
SharedPreferences and SQLite
Material Design basics (FAB, Snackbar, Coordinator layout)
Animations and transitions
AndroidX vs Android Support Library
Gradle Build System
Garbage Collector
Memory Leaks
Concurrency
Background
Room
REST APIs and JSON parsing
Exception handling
Notifications
Performance optimization
Debugging and testing
Publishing and distribution
Singapore government logo

The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.


85%
reduction in screening time

Android Online Test FAQs

How is the test customized for Java Android developers?

Along with Android questions, the test will have scenario-based MCQ questions to evaluate core Java concepts (OOPs, Classes, Exceptions, Collections) and coding questions to evaluate hands-on Java programming skills. You can review our standard Java test to understand what kind of questions will be used.

How is the test customized for Kotlin Android Developers?

Along with Android questions, the test will have scenario-based MCQ questions to evaluate core Kotlin concepts (Variables, Strings, Collections and OOPs) and coding questions to evaluate hands-on Kotlin programming skills. You can review our Kotlin online test to understand what kind of questions will be used.

How to evaluate Junior Android Developers?

The difficulty level and topics of the questions will be customized for junior developers. The questions will be relatively easy and focus on the basics of Android development (designing layouts, developing activities, handling user interactions, saving user data). Along with Android, there will be easier MCQ questions to evaluate Java/ Kotlin basics and simpler coding questions.

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify.

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

  • Non-googleable questions
  • IP proctoring
  • Web proctoring
  • Webcam proctoring
  • Plagiarism detection
  • Secure browser

Read more about the proctoring features.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

What is the cost of using this test?

You can check out our pricing plans.

Can I get a free trial?

Yes, you can sign up for free and preview this test.

I just moved to a paid plan. How can I request a custom assessment?

Here is a quick guide on how to request a custom assessment on Adaface.

Join 1200+ companies in 75+ countries.
Try the most candidate friendly skills assessment tool today.
Ready to use the Adaface Android Online Test?
Ready to use the Adaface Android Online Test?
Chat with us
40 min tests.
No trick questions.
Accurate shortlisting.
Terms Privacy Trust Guide

🌎 Pick your language

English Norsk Dansk Deutsche Nederlands Svenska Français Español Chinese (简体中文) Italiano Japanese (日本語) Polskie Português Russian (русский)
Ada
Ada
● Online
Previous
Score: NA
Next
✖️