The latest Android interview questions compiled by BAT interviewers!

Recently, according to the interview questions shared by netizens, today I have sorted out the Android interview questions of BAT and other major manufacturers that netizens interviewed. I hope to help you!

Face-to-face sharing

Ali side

1. Self-introduction
2. What projects have been done and what technologies have been used
3. Four major components
4. Activity life cycle
5. Startup mode
6. Thread status
7. Network protocol (each layer, as well as TCP and UDP)
8. Will network programming be
9.handler 10.
JVM, memory model
11.GC mechanism (what are the methods and problems)
12. The database in the project
13. HashMap, HashTable, ConcurrentHashMap1
14. Rhetorical link

Ali two sides

1. Self-introduction
2. TCP and UDP and application scenarios (three-way handshake and four waved hands are basically asked)
3. Algorithmic question: the problem of string segmentation according to dictionary. The time complexity of the solution given at the beginning is too high, and it has been required to be optimized.
4. Introduce the projects that have been done, and continue to ask questions along the project (focus on the problems encountered and solutions)
5. Binder communication mechanism
6. The pros and cons of
React Native and native development 7. View event distribution mechanism and View drawing Principle
8. Rhetorical questions and chat sessions There are
more follow-up questions, but there is nothing difficult, there is nothing that I can't answer a word.

Ali three sides

1. Self-introduction
2. What is the difference between broadcast and EventBus?
3. Build your own picture loading framework idea, how to do
4. Bitmap memory calculation method, efficiently load
5. Binder communication process? The principle of Binder? What are the advantages and disadvantages of other IPC methods?
6. The underlying realization principle of
handler 7. RxJava various operators and design ideas.
8. Caton optimization, principle, operation
9. What optimizations have been made? How to achieve it, what problems are encountered, and how to solve them
10. Questions and exchanges

Ali all around

1. How much source code have you seen
2. The caching mechanism in the network protocol okhttp, the dex loading process, the principle of componentization;
3. The principle and difference of MVC MVP MVVM
4. If you were to implement a debugger, how would you design it? Static debugging? What about dynamic debugging?
5. Hot fix, plug-in, componentization
6. Android Framework source code
7. What design patterns have you used? Talk about the specific scene at that time. Why do you use the method factory, the other two?
8. The difference between the advantages and disadvantages of kotlin and flutter, how much to master
9. What do you want to ask me

Ali Five Faces (hr)

1. Project
2. Planning
3. The project is about to be reported soon, and there is a problem with the PPT, what will you do
4. Salary
5. Question link

At last

For many junior and mid-level Android engineers, if they want to improve their skills, they often grow up on their own. The learning effect of fragmented systems is inefficient, long and helpless . These architecture technologies are compiled and hoped to have reference to friends of Android development and avoid detours. The focus of this article is whether you have gained and grown, and the rest is not important. I hope readers can keep this in mind.

At the same time, after many years of collection, I have collected a complete set of learning materials and high-definition detailed Android architecture advanced learning maps and notes to share with you for free. I hope to have some reference and help for friends who want to become architects.

The following are some screenshots of the information, full of sincerity: especially suitable for Android programmers with development experience to learn.

Free way to receive materials: click on my GitHub ~

No matter what difficulties we encounter, it should not be a reason for us to give up!

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