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The latest interview experience of Android manufacturers in 2022, Android view+handler+binder
2022-07-07 16:44:00 【InfoQ】
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Recently found some readers , The interview message mentioned job hopping . among , There are several programming veterans , Said they were engaged in Android Years of development , The salary is still turning around , Job hopping and promotion are not very smooth , Very confused . This is obviously a bottleneck period .
In terms of the current environment , It is indeed more difficult to succeed in job hopping this year than in previous years . An obvious feeling : This year's interview , On one or two sides , It's all tested Android Programmer's technical precipitation .
Recently, nearly 100 Taoali 、 teng
《Android Summary of learning notes + Latest mobile architecture video + Big Android interview questions + Project actual combat source code handout 》 Free open source Hui Xin search official account 【 Advanced programming 】
News 、 Meituan 、 Netease and other companies 2019 Interview questions for , Sort out the technical points into a large and complete “Android Architects ” Interview questions ( In fact, it took a lot more energy than expected ), Contains the context of knowledge + Branch details , Due to limited space , Here is a part of it in the form of pictures .
Due to the large number of interview questions involved, it leads to a long space , According to the range of frequently asked questions involved in these interview questions, I have summarized and made an advanced learning roadmap ??????? And the answers to the interview questions are shared with you for free , At the end of the article, there is a free way to get !
View Interview topics
- View Sliding way of
- View Event distribution mechanism of
- View Loading process of
- View Of measure layout and draw technological process
- Customize view Some points to pay attention to
- ACTION_DOWN No interception ,ACTION_MOVE ACTION_UP Will it still intercept
Multithreading project
- What is thread
- State of thread
- Thread creation
- Thread the interrupt
- Thread Why can't you use stop Method to stop the thread
- Reentry locks and conditional objects , Synchronization method and synchronization code block
- volatile keyword
- java Memory model
- Atomicity visibility Orderliness
- Thread pool ThreadPoolExecutor
- The type of thread pool
- Thread synchronization mechanism and principle , Illustrate with examples
- arrayList And linkedList The time complexity of reading and writing
- Why? HashMap Thread unsafe (hash Collision and expansion lead to )
- The difference between process threads
- Binder The memory copy process of
- Tradition IPC The communication principle of the mechanism (2 Secondary memory copy )
- Java Memory model ( Remember that the stack is a memory partition , It's not a model )
- Class loading process
- When will class initialization be triggered
- The parental commission model
- The benefits of the parental delegation model
- The conditions for deadlock are , How to avoid deadlock
- App Start process
- Android Single thread model
- RecyclerView Can replace... In many ways ListView,Google Why didn't you put ListView Draw an old line ?
- HashMap How to ensure that the elements are evenly distributed
Data structure interview topic
- Introduction to common data structures
- What do concurrent collections know about ?
- list java Sets of and inheritance relationships between sets
- Introduction to container classes and the differences between them
- List,Set,Map The difference between
- HashMap Implementation principle of
- HashMap how put data ( from HashMap Explanation of source code )?
- HashMap how get data ?
- When two objects hashcode identical , When there is a collision ,HashMap How to deal with it
- If you have two keys hashcode identical , How to get a value object ?
- hashMap How to expand
- ConcurrentHashMap Implementation principle of
- ArrayMap and HashMap Comparison of
- HashTable Realization principle
- HashMap and HashTable The difference between
- HashMap And HashSet The difference between
- HashSet And HashMap How to judge the repetition of set elements ?
- aggregate Set Realization Hash How to prevent collision
- ArrayList and LinkedList The difference between , And application scenarios
Conclusion
- Now with the short video , Tiktok , The popularity of Kwai Fu NDK Module development is becoming more and more important , More and more enterprises need this talent , Along with that, more and more people are learning this area , The development of audio and video , It's often more difficult , And the more difficult technology is NDK The technology inside .
- Audio and video / High definition big picture / Artificial intelligence / live broadcast / Tiktok and so on are the most closely linked with users this year , The technology most related to our life has been looking for the final technology landing platform , It used to be windows System , Now it's the mobile system , In the mobile system, there are also Android Most of them are premise , therefore AndroidNDK Technology is a necessary skill for us .
- Study well NDK, One of them is about C/C++,jni,Linux The foundation needs to be learned , besides , Audio and video codec technology , Streaming protocol ,ffmpeg These are necessary skills for audio and video development , and
- OpenCV/OpenGl/ These are the necessary knowledge of image processing , Here are all the information I collected and some pictures I made in those years , Because I felt that video would be a big trend in those years . So I made some preparations in advance . Now share it with everyone .
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