From basic to advanced architecture, including Tencent, Baidu, Xiaomi, Alibaba, LeTV, Meituan, 58, Cheetah, 360, Sina, Sohu and other first-line Internet companies interview questions asked, covering junior high school advanced Android technology points.
The main part listed in the article is the outline part, and the details can be obtained by yourself at the end of the article!
If you are proficient in the knowledge points listed in this article, I believe it will greatly increase your chances of passing the first two rounds of technical interviews! These contents are for your reference and learn from each other.
Hot fix introduction
1. Development process
When a project has an emergency bug, the traditional development process is to release a new version and guide users to overwrite the installation. Regardless of the platform review and launch time, the user experience of repeating download and installation at least twice a day is very poor. The emergence of hot fixes perfectly solves this problem. After the user receives the repair package pushed by the server, he repairs it while the project is running. The whole process is completed in a state where the user is unaware, and there is no need to download a relatively large installation package, and the cost is small.
Summarized as two advantages:
- No need to reissue version, high repair efficiency
- No user perception, low cost
2. What can be fixed
- Resource restoration
- Code fix
- so library repair
3. Code repair technology classification
There are currently three main options:
- Dex instrumentation/replacement based on class loading and Dex subcontracting scheme
- Native Hook for underlying replacement
- Install Run for class injection
Due to the variety of customized systems by domestic mobile phone manufacturers, Dex plugging/replacement is the most suitable solution in my opinion.
How to do a good job interview surprise and plan the learning direction?
The interview question set can help you find out and fill up the vacancies, have a direction and targeted learning, and prepare for future entry into a large factory. But if you just read it again, don't study and delve into it. Then this interview question will be of limited help to you. In the end, we must rely on senior technical level to speak.
There are a lot of materials for learning Android on the Internet, but if the knowledge learned is not structured, and when you encounter problems, you just taste it and stop studying it in depth, then it is difficult to achieve real technological improvement. It is recommended to make a study plan first and associate the knowledge points according to the study plan to form a systematic knowledge system.
The learning direction is easy to plan, but if only through fragmented learning, it is very slow to improve oneself.
At the same time, I also collected and sorted out ByteDance in 2020, as well as interview questions from companies such as Tencent, Ali, Huawei, Xiaomi, etc., and sorted out the requirements and technical points of the interview into a large and comprehensive "Android Architect" interview Xmind (in fact, it is better than Expected to spend a lot of energy), including the knowledge context + branch details .
When building these technical frameworks, I also organized the system's advanced advanced tutorials, which will be much better than my own fragmented learning effect.
Click: "Android Architecture Video + BAT Interview Special PDF + Study Notes" can be obtained for free~
There are a lot of materials for learning Android on the Internet, but if the knowledge learned is not structured, and when you encounter problems, you just taste it and stop studying it in depth, then it is difficult to achieve real technological improvement. I hope that this systematic technical system will provide you with a direction reference.
When you encounter a problem, you just taste it and stop studying it in depth, so it is difficult to achieve real technological improvement. I hope that this systematic technical system will provide you with a direction reference.