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Android Online 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.

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Screen candidates with a 40 mins test

Test duration:  ~ 40 mins
Difficulty level:  Moderate
Availability:  Available as custom test
Questions:
  • 5 Android MCQs
  • 5 Java MCQs
  • 1 Java Coding Question
Covered skills:
Android core (Activities; Layouts; Views)
Android user experience design (Lifecycle; Navigation)
Handling user interactions
Background tasks and triggers
MVP / MVVM architecture using reactive View Models
Data management (Shared preferences; SQLite; Room)
Advanced components (Fragments; Widgets; Sensors)
Exception handling
Performance optimizations
Notifications
permissions and services
Concurrency and multithreading fundamentals
Debugging and testing
Publishing apps on Google Play
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Use the Android Test to shortlist qualified candidates

The Android Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

  • Efficiently handling exceptions and errors
  • Understanding and implementing MVP/MVVM architecture using reactive View Models
  • Managing data with Shared preferences, SQLite, and Room
  • Working with advanced components like Fragments, Widgets, and Sensors
  • Optimizing performance of Android apps
  • Implementing notifications, permissions, and services
  • Understanding concurrency and multithreading fundamentals
  • Effective debugging and testing of Android apps
  • Publishing apps on Google Play
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Screen candidates with the highest quality 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.

How we design questions

These are just a small sample from our library of 15,000+ 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
Exception Handling
Custom Exceptions
Solve
What does the following code output?
 image

Hard

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

Hard

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
Queues
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

Hard

Find the customer with the most spend 2
JOIN
GROUP BY
ORDER BY
Solve
Given details of customers, products, and sales, write a SQL query to find the customer with the highest spend. The customer with the highest spend is the one who has spent the most money on purchases. The query should return the full name of the customer and the total amount spent by the customer rounded off to the nearest integer.
full_name is the concatenation of first_name and last_name separated by a space. Eg:
first_name = 'Alice', last _name = 'Brown' => full_name = 'Alice Brown'
You can assume that there will always be non-empty first_name and non-empty last_name entries for all customers in the table.
 image

Medium

Visitors Count
Strings
Logic
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
Exception Handling
Custom Exceptions

2 mins

Java
Solve

Hard

Holding References

2 mins

Java
Solve

Medium

Abstract Interface
OOPs
Interfaces

2 mins

Java
Solve

Medium

Garbage Collection
Garbage Collection

2 mins

Java
Solve

Hard

Static Init Blocks
OOPs

2 mins

Java
Solve

Easy

Registration Queue
Logic
Queues

30 mins

Coding
Solve

Hard

Find the customer with the most spend 2
JOIN
GROUP BY
ORDER BY

10 mins

SQL
Solve

Medium

Visitors Count
Strings
Logic

30 mins

Coding
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Intent & Activity
Android
Easy2 mins
Solve
Linear Layout
Android
Easy2 mins
Solve
Custom Exception
Exception Handling
Custom Exceptions
Java
Easy2 mins
Solve
Holding References
Java
Hard2 mins
Solve
Abstract Interface
OOPs
Interfaces
Java
Medium2 mins
Solve
Garbage Collection
Garbage Collection
Java
Medium2 mins
Solve
Static Init Blocks
OOPs
Java
Hard2 mins
Solve
Registration Queue
Logic
Queues
Coding
Easy30 minsSolve
Find the customer with the most spend 2
JOIN
GROUP BY
ORDER BY
SQL
Hard10 minsSolve
Visitors Count
Strings
Logic
Coding
Medium30 minsSolve

Test candidates on core Android Hiring Test topics

Android core: Android core refers to the fundamental building blocks of Android app development, including activities, layouts, and views. These components are crucial for creating user interfaces, handling user interactions, and managing data in Android applications. Measuring this skill in the test ensures candidates have a strong foundation in Android development.

Android user experience design: Android user experience design focuses on understanding the lifecycle of an Android app and implementing smooth navigation for users. This skill is essential in creating intuitive and user-friendly interfaces, enhancing the overall user experience. Evaluating candidates on this skill helps identify their ability to create engaging and efficient Android applications.

Handling user interactions: Handling user interactions involves capturing and responding to user input in an Android app. This skill assesses a candidate's ability to implement event listeners, handle touch events, and manage user interactions effectively. Evaluating this skill ensures candidates can create interactive and responsive Android applications.

Background tasks and triggers: Background tasks and triggers are responsible for executing actions in an Android app even when it is not actively in use. This skill involves managing background services, scheduling tasks, and responding to system events. Measuring this skill ensures candidates can create efficient and reliable Android applications that persistently perform actions in the background.

MVP / MVVM architecture using reactive View Models: MVP (Model-View-Presenter) and MVVM (Model-View-ViewModel) are popular software architectural patterns used in Android development. This skill assesses a candidate's ability to design and implement these patterns using reactive View Models, which provide data and logic separation. Evaluating this skill helps identify candidates who can develop well-structured, modular, and maintainable Android applications.

Data management: Data management in Android involves storing, retrieving, and manipulating data using various methods, such as shared preferences, SQLite databases, and the Room persistence library. This skill evaluates a candidate's ability to handle data effectively in an Android app. Measuring this skill ensures candidates can implement reliable data management solutions in their applications.

Advanced components: Advanced components in Android, including fragments, widgets, and sensors, allow for more complex and interactive UI elements and interactions. This skill evaluates a candidate's ability to utilize these components effectively in Android app development. Measuring this skill helps identify candidates who can create dynamic and feature-rich Android applications.

Exception handling: Exception handling involves identifying, catching, and handling errors or unexpected situations in an Android app. This skill assesses a candidate's ability to handle exceptions gracefully and ensure the stability and reliability of their applications. Evaluating this skill helps identify candidates who can create robust and error-free Android applications.

Performance optimizations: Performance optimizations in Android focus on improving the speed, efficiency, and responsiveness of an app. This skill assesses a candidate's ability to identify performance bottlenecks, optimize code, and implement efficient algorithms. Evaluating this skill helps identify candidates who can create high-performing Android applications.

Notifications, permissions, and services: Notifications, permissions, and services are essential components for enhancing user experience and app functionality in Android. This skill evaluates a candidate's understanding and implementation of these features. Measuring this skill ensures candidates can implement notifications, handle permissions, and utilize services effectively in their Android applications.

Concurrency and multithreading fundamentals: Concurrency and multithreading involve executing tasks concurrently and efficiently utilizing multiple threads in an Android app. This skill assesses a candidate's ability to manage threads, handle synchronization, and implement parallel processing. Evaluating this skill helps identify candidates who can create responsive and concurrent Android applications.

Debugging and testing: Debugging and testing skills are essential in identifying and fixing issues in Android applications. This skill assesses a candidate's ability to use debugging tools, write unit tests, and perform quality assurance on their code. Evaluating this skill ensures candidates can deliver stable and bug-free Android applications.

Publishing apps on Google Play: Publishing an app on Google Play involves understanding the submission and review process, adhering to guidelines, and preparing the app for distribution. This skill evaluates a candidate's knowledge of the app publishing process and ensures they can successfully publish Android applications. Measuring this skill identifies candidates who can effectively deploy their apps to the Google Play Store.

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Have questions about the Android Hiring Test?

How does pricing work?

You can check out our pricing plans.

Can I customize the test?

Yes, absolutely. Custom assessments are set up within 48 hours based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test. You can also customize a test by uploading your own questions.

Can I combine multiple skills into one test?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

What roles can I use the Android Test for?

Here are few roles for which we recommend this test:

  • Android Developer
  • Junior Android Developer
  • Senior Android Developer
  • Kotlin Android Developer
  • Java Android Developer
  • Android Software Engineer
Can I see a sample test, or do you have a free trial?

Yes!

The free trial includes one sample technical test (Java/ JavaScript) and one sample aptitude test that you will find in your dashboard when you sign up. You can use it to review the quality of questions and the candidate experience of giving a test on Adaface.

You can preview any of the 500+ tests and see the sample questions to decide if it would be a good fit for your requirements.

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.

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.

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