Preface
Dachang interviews have always been a topic that programmers talk about during fishing time, and entering a big factory must be the dream of countless programmers.
The question of "principle" is almost a question that Android developers must ask nowadays, especially in interviews with major manufacturers. Friends who have interviewed at a large factory should know: The interviewer at a large factory will generally start with a very basic question based on your resume, and then dig for you step by step, and finally will surely ask questions about the principle. Go up.
Therefore, if you want to enter a big factory, you must pass the principle!
When chatting with a friend of mine in Alibaba a few days ago, I specifically asked the "hardcore" interviewer who developed Android for 10 years . What principles are asked in Alibaba's interviews . This article is hereby compiled, and I hope it will be helpful to everyone's interview.
When it comes to senior engineers, everyone's first impression is naturally that they have rich work experience and strong skills.
Note that this is about work experience, not working hours. Some people work on projects steadily, thinking about learning more new technologies in their spare time, insisting on reading, writing blog summaries seriously, practicing more, plus their own savvy and not bad, they can have two or three years. With 3 or 5 years of work experience, it is natural to grow into a senior engineer in the company. And some people mix up their lives, do projects that are easy to do, play games in their spare time, and chase dramas. Maybe you have been working in the company for 10 years and look conscientious, but you don’t have higher requirements for yourself. Even if these people have 10 years of working hours, they can only stop there.
The junior engineer will start to do it directly when he gets the requirements, and then do it and find that there is a problem, either the technology cannot be realized, or there is a problem with the logic.
However, senior engineers will consider a lot when they get the requirements, the feasibility of the technology? Does it help the existing business? The impact on the existing technology architecture? How scalable is it? Wait...then the design coding stage will be carried out later.
And now with the popularity of cross-platform development, hybrid development, and front-end development, the technologies that Android developers need to learn and master are also increasing.
Through exchanges and discussions with friends in some industries, and refer to the current interview requirements of major factories. We spent almost a month sorting out all the knowledge systems that this Android senior engineer needs to master. You can see how much you have mastered.
Hybrid development, WeChat applet. All have to be learned and proficient;
These are the cores of Android-related technologies, as well as advanced Java
Some techniques necessary for advanced advanced. Like mobile development architecture project combat, etc.
Android cutting-edge technology; including componentization, hot upgrades and hot repairs, as well as detailed technical systems of various architectures and frameworks
The above is the technical system we have compiled for Android senior engineers to master. Many friends may think that many technologies can be achieved by themselves, but some new technologies are not clear. There should be no big problem.
And this is precisely the problem! Why other senior engineers can exceed 300,000 years, but you only have a few hundred thousand?
It's because you only need to add what you think you need, but you don't know what the company needs. This is particularly easy to cause gaps. Because your technical system is not systematic, it is fragmented and scattered. So why do you break through 300,000 annual salary?
These words of mine are relatively straightforward and may poke some people's glass hearts, but I know it will definitely have a wake-up effect for some people. As long as someone finds a direction based on my advanced system outline and these words, and takes action to improve themselves, they will work harder to succeed. Then what I did all made sense.
Interview review notes:
This information will be published in various blogs and forums starting from the spring recruitment. Collect the high-quality intermediate and advanced interview questions for Android development on the website, and then find the best solution for the whole network. Every interview question is a 100% real question + the best answer. Package knowledge + many details.
Save everyone's time to search for information on the Internet to learn, and you can also share with friends around you to learn together.
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"960 Pages of Android Development Notes"
"1307-page Android Development Interview Collection"
Including Tencent, Baidu, Xiaomi, Ali, LeTV, Meituan, 58, Cheetah, 360, Sina, Sohu and other first-line Internet companies interview questions were asked. Familiarity with the knowledge points listed in this article will greatly increase the chances of passing the first two rounds of technical interviews.
"507 pages of Android development related source code analysis"
As long as it is a programmer, whether it is Java or Android, if you don't read the source code and only look at the API documentation, it will just stay on the skin. This is not good for the establishment and completeness of our knowledge system and the improvement of actual combat technology.
Ava is still Android. If you don’t read the source code and just look at the API documentation, it will just stay on the skin. This is not good for the establishment and completeness of our knowledge system and the improvement of actual combat technology.
The one who can really exercise the ability is to read the source code directly, not only reading the source code of major systems, but also including a variety of excellent open source libraries.