Preface
The following questions are often encountered during interviews by ByteDance or other major companies. If you have good questions or good insights, please share them.
Reference analysis : Guo Lin, Hongyang
Content Features : Clearly organized, with graphical representations that are easier to understand.
Content summary : Including Handler, Activity-related, Fragment, service, layout optimization, AsyncTask-related, Android event distribution mechanism, Binder, Android advanced essentials: AMS, WMS, PMS, Glide, Android componentization and plug-in and other interview questions and technologies Stack!
Next, we have a complete interview question for the ByteDance Android Intermediate and Advanced Interview.
How to learn Android Framework
Since Framework is so important, how do we learn it?
Regarding how to learn Android Framework development knowledge, I recently had the honor to pick up this Android framework advanced development note in the hands of the Bytedance Director. Some of the knowledge chapters were published on Zhihu and even 1000+ likes. I will share it with you today. everyone.
This note mainly explains the main modules of Framework:
Chapter 1: In-depth analysis of Binder
Binder mechanism as a means of inter-process communication, basically runs through all the andorid framework layers. So we must first understand the basic communication mechanism of Android Binder.
Knowledge points in this chapter
- Binder series-opening
- Initial exploration of Binder Driver
- Binder Driver Revisited
- Binder starts ServiceManager
- Get ServiceManager
- Registration Service (addService)
- Get Service (getService)
- Framework layer analysis
- How to use Binder
- How to use AIDL
- Binder summary
- Full analysis of Binder interview questions
Chapter 2: In-depth analysis of Handler. I
believe everyone has this feeling: There are so many articles analyzing the principle of Handler mechanism on the Internet, so why do you have to superfluously organize this note? It’s not that the articles written by the former people are not good, but I just think that their writing is not detailed, some points are not clear, and the logic is difficult to fluent. Every time I learn something, it feels uncomfortable to encounter such a situation.
This chapter starts with macro-theoretical analysis and Message source code analysis, then to MessageQueue source code analysis, Looper source code analysis, handler source code analysis, and Handler mechanism implementation principle summary. Finally, I also sorted out all the Handler interview questions.
The Handler chapter is very long, but the idea is gradual. If you can persist in reading it, I believe you will not be disappointed.
Chapter 3: Dalvik VM Process System
Andorid system startup, init process, Zygote, SystemServer startup process, application creation and use, activity creation, destruction Handler and Looper.
Chapter 4 In-depth analysis of WMS
The working principle of the window management frame system animation frame View.
The fifth piece PackagerManagerService
Package management services. Resource management related classes
At last
I hope that everyone will have a good attitude. You have to think clearly about what kind of company you want to enter. It is not necessarily a large company, and I am not a very large company. Of course, if you don’t know the choice or plan, then choose a big company! I hope that we can choose the company we want to go to before investing or introducting it, instead of having a company that wants me to go! Also, don’t be afraid, and don’t be under pressure. Just treat it with your heart, but be prepared. Finally, I hope everyone can get a satisfactory offer! If you currently have a job, please cherish it and work hard. Finding a job is actually quite tiring and hard.
Attached here are dozens of sets of ByteDance related to the above-mentioned interview questions, interview questions from JD.com, Xiaomi, Tencent, Toutiao, Ali, Meituan and other companies in 19 years. The technical points are organized into videos and PDFs (in fact, it took a lot of effort than expected), including knowledge + many details.
Due to limited space, I will show you a small part in the form of pictures. You can get it for free on GitHub
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