Many programmers have this kind of consciousness; job-hunting education is a stepping stone. Without 211,985 starting education, it is impossible to enter a large company.
Let me give you an example;
If you are an interviewer from a big factory, there are 10 general school freshmen who have just graduated without work experience and 10 985 freshmen who have just graduated, and you only plan to recruit 5 internships.
Do you look at academic qualifications or ability?
I think normal interviewers will choose a good degree. Because before you work, your academic qualifications largely represent your abilities
1. Picture
1. Picture library comparison
2. LRUCache principle
3. Picture loading principle
4. How to implement the picture library by yourself?
5. Glide source code analysis
6. What cache does Glide use?
7. How to control the size of Glide memory cache?
2. Network and security mechanism
1. Network framework comparison and source code analysis
2. How to design network request framework by yourself?
3. Network request cache processing, how does okhttp handle the network cache
4. Load a 10M picture from the network, and talk about the points of attention
5. TCP's three-way handshake and four waved hands
6. The difference between
TCP and UDP 7. TCP and UDP Application
8. HTTP protocol
9. Difference between
HTTP 1.0 and 2.0 10. HTTP message structure
11. Difference between HTTP and HTTPS and how to achieve security
12. How to verify the validity of the certificate?
13. Where is symmetry used in https Encryption, where is asymmetric encryption used, and do you have any understanding of encryption algorithms (such as RSA)?
14. How does the client determine that the message sent by the client is received by the server?
15. Talk about your understanding of WebSocket 16. WebSocket
and socket Difference
17. Talk about your understanding of Android signatures.
18. Please explain why Android needs to add a signature mechanism?
19. Video encryption transmission
20. How is App sandboxed and why do you want to do this?
21. Authority management system (how is the underlying authority granted)?
Three, the database
1. Sqlite upgrade, adding field statements
2. Database framework comparison and source code analysis
3. Database optimization
4. Database data migration issues
Fourth, plug-in, modularization, componentization, hot fix, incremental update, Gradle
1. Understanding of hot fix and plug-in
2. Analysis of plug-in principle
3. Modularization (benefits, reasons)
4. Hot fix and plug-in
5. Understanding of project componentization
6. Description Click the build button of Android Studio What happened after
Five, architecture design and design patterns
1. Talk about your understanding of Android design patterns
2. MVC MVP MVVM principles and differences
3. What design patterns do you know?
4. Commonly used design patterns in the project
5. Handwritten producer/consumer pattern
6. Write the code of observer pattern
7. Adapter pattern, decorator pattern, appearance pattern similarities and differences?
8. Some open source frameworks used, introduce an internal implementation process that has seen the source code.
9. Talk about the understanding of
RxJava 10. Rxjava send event step
11. RxJava's role, the advantages and disadvantages compared with the usual asynchronous operation
12. Talk about the function of EventBus, the implementation method, the way to replace EventBus
13. Design from 0 How to do the overall architecture of an App?
14. Talk about an application that you think is currently popular and design it (for example: live streaming APP, P2P finance, small video, etc.)
15. Talk about the understanding of java state machine
16. How should Fragment be decoupled if used in Adapter?
17. Binder mechanism and underlying implementation
18. How is the application update done? (Answer: Grayscale, mandatory update, sub-regional update)?
19. Implement a Json parser (you can improve the speed through regularization)
20. Statistics start time, standard
In addition to flutter, what else must be mastered in Android development?
I believe that most of my friends who are engaged in Android development are finding that finding a job is getting harder and harder and the requirements for interviews are getting higher
In addition to a solid basic knowledge of java, data structure algorithms, and design patterns, the underlying source code, NDK technology, performance tuning, and some small programs and cross-platforms, such as flutter, are shown in the figure below as a mind map;
Click on the document to get interview materials and video tutorials; [Ali P7 level Android architect technical mind map + full set of videos]
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