foreword
The most important thing when I come out to work is the salary. As an Android staff with 5 years of development experience. In today's general environment, wages have dropped again and again, and no one wants them. The technology is not bad but the interview keeps getting rejected? This is why, in this article, let's talk about the key points in the Android development interview.
interview process
Usually during the interview process, the interviewer will use these categories as a link.
1. Technical knowledge test
Basic knowledge, core concepts and common frameworks of Android development.
2. Programming ability assessment
Ask you to solve a real programming problem or complete some coding tasks.
3. Demonstration of project experience
The roles you have taken on in past projects have required you to describe in detail the project's architecture, implementation process, challenges encountered and solutions.
4. Open questions
Such as how to optimize performance, how to handle exceptions, how to design a good user interface, etc.
In addition to the above points, the interview may also involve system design, algorithm questions, code troubleshooting, and inspection of the breadth and depth of knowledge, etc.
Common Android Interview Questions
During the interview process, the interview questions are an important means of the examiner, so we must prepare for the questions. Recommended here: "Android Selected Interview Questions" document records some frequently-occurring interview questions over the years.
Here is an example of 30 questions:
- Please explain what are the four major components in Android and describe the relationship between them.
- What are Android Architecture Components? List and explain what each component does.
- Please explain what is Android Jetpack and what is its main goal?
- Talk about design patterns you've used in your Android app and explain what they are for.
- Please explain in detail the three common Android architectural patterns of MVC, MVP and MVVM, and compare the differences between them.
- In Android, talk about your understanding of Dependency Injection (Dependency Injection) and its advantages.
- What is multithreading, and how do you manage and handle multithreading in Android development?
- Explain the role of Handler and Looper in Android.
- In Android, talk about your understanding of Content Provider and its usage.
- Talk about the network request libraries you use in Android development and explain why you chose them.
- What are local storage options in Android? Please list and compare their advantages and disadvantages.
- In Android, talk about your understanding of RecyclerView and the difference between it and ListView.
- Please explain what Coroutines are in Android and their advantages over traditional threading.
- Talk about your understanding of the animation mechanism in Android, and provide some examples of common animation effects.
- In Android, talk about your experience and practice on memory management and performance optimization.
- In Android development, talk about what you know about permission management and how to properly handle runtime permissions.
- Please explain what an Intent is in Android and describe its purpose and how to use it.
- In Android, talk about your understanding of broadcast (Broadcast) and how to dynamically register and send broadcast.
- What is the notification (Notification) system in Android, talk about your understanding of it and how to create and process notifications.
- In Android, talk about your understanding of data persistence and how to use SQLite database for data storage.
- Tell me about the testing frameworks and methods you use in Android to ensure the quality of your apps.
- Please explain the screen adaptation problem in Android and provide some solutions.
- In Android development, talk about your experience in performance optimization and power management.
- Explain what a Web View (WebView) in Android is, and describe the challenges you encounter when using WebView and how to solve them.
- Tell us about your experience with build tools and continuous integration/continuous delivery (CI/CD) in Android development.
- Please describe your experience with version control and teamwork while developing Android applications.
- In Android development, talk about your understanding and application experience of Reactive Programming.
- In Android, explain your understanding of Material Design and provide some examples of how you have implemented Material Design in your applications.
- Tell me about the debugging and troubleshooting techniques you use in Android development.
- Please explain what AIDL (Android Interface Definition Language) in Android is and under what circumstances it is used.
These questions cover some core concepts and common techniques in Android development, helping interviewers assess your understanding and practical experience. Make sure to solidify your understanding of these questions and prepare appropriate answers and examples to demonstrate your skills and knowledge in advanced Android development.
interview preparation
To better prepare for Android interviews, you can consider the following suggestions:
- Review and consolidate core knowledge: review the basic knowledge of Android development, how to use common frameworks and libraries, and understand their principles, advantages and disadvantages.
- Carry out project practice: Participate more in actual project development, and deepen understanding of development process, architecture design and problem solving through practice projects.
- Brushing questions and practicing: Improve your coding ability and problem-solving ability through the question brushing platform or programming challenges.
- Interview simulation and self-assessment: Find some mock interview websites or interview question banks, conduct interview simulations, and evaluate and improve your performance in time.
- Follow the latest trends and hot topics: learn and understand the latest technologies and trends in current Android development, such as Jetpack components, Kotlin language features, reactive programming, etc.