Preface

With the advent of the Internet age, it has become easier for us to acquire knowledge. In theory, as long as you want to learn, there will be endless knowledge waiting for you. As long as you use the right methods and work hard enough, anyone can become a big cow.

On the basis of my hard work, I also learned some efficient learning methods, which made me more efficient and quicker to master in the process of learning. The following are some of my routines for learning Android.

Interview experience

After I decided to leave in July, I started to read various interviews, reviewed the basics, and started to submit my resume at the end of the month. I liked the beating of bytes, but I knew that the first time I would be cold, I first voted for Meituan and Kuaishou.

Meituan took the lead in an interview, and the algorithmic questions were relatively simple and quickly made, but it was really nervous the first time, which caused a lot of basic knowledge to be messed up, and the two sides died...

Kuaishou may not match the job position and ability, and did not receive the interview notice...

After that, I found friends to push in, and voted ByteDance. A week later, I started calling and after the interview, I played with my friends for two days. As a result, two days later, I didn’t receive a reply, thinking it was cold...

Later, on the third day, the second interviewer added my WeChat account and started to make an appointment. After the two sides were over, the interviewer made it clear that I would wait for three sides (happy).

About five days later, the interviewer made three appointments.

The three-sided process went smoothly. After three days passed, I had a brief chat with HR and said that there is still a leader face.

Later, when I was visiting Boss for direct employment, I asked for a resume. After giving it to him, I also had a wave of interviews. I also wrote the code on white paper. Three rounds of technology and one round of HR were relatively safe.

During the period, there was a simple question, but my mind was lost. The interviewer changed the question after many times to no avail, and it was done quickly. (Like the interviewers of Ape Counseling here, the experience is great)

After going around, HR asked me who hadn't met yet. I made it clear that Tencent was still one round short of meeting, so HR said that after I met Tencent, we would discuss the specific treatment, but the offer was confirmed.

Byte three-sided technical problem

one side

1: Plug-in. Start the hook method of the activity. taskAffity.
2: Does okhttp support HTTP2? What are the functions of http2? Congestion control in tcp? Tsl's handshake and specific asymmetric encryption algorithm. Asymmetric name
3: How the handler's post (Runnable) is implemented. The execution priority of callback, runnable, and msg. How is blocking achieved? Why won't it block the main thread?
5: Find the maximum distance between two nodes in the binary tree.
6: 206 meaning, which is the unmodified resource, 302 meaning, 301 meaning
7: Multi-process communication problem. Binder advantage. Details of java classes generated by aidl. What problems do multi-process encounters?
8: What are the parameters passed in by the dynamic agent? Can non-interface classes implement dynamic proxying? Principle
9 of ASM : What is the difference between Application and Activity in the inheritance tree of Context? What is the difference in the use of the two?
10: Any binary tree, find the maximum node distance

Two sides

1: Design a log system.
2: Classification of memory leaks. How to check the memory leak problem
3: touch event source code problem.
4: The problem of componentization. The difference between module and app. How moduler communication is achieved.
5: How to deal with log collection of native crash?
6: Annotation implements a prompt function: If the value of int is greater than 3, a prompt is required.

Three sides

1: Introduce the startup process of flutter
2: Introduce the difference between flutter and weex
3: Component introduction
4: What are the means of communicating with js in webview?
5: Introduce the principle of flutter_boost

All sides

1: The respective characteristics and usage scenarios of the adapter and the decoration mode
2: How does the video codec work
3: Three-color ball sorting

At last

For many junior and mid-level Android engineers, if they want to improve their skills, they often grow up on their own. The learning effect of fragmented systems is inefficient, long and helpless . These architecture technologies are compiled and hoped to have reference to friends of Android development and avoid detours. The focus of this article is whether you have gained and grown, and the rest is not important. I hope readers can keep this in mind.

At the same time, after many years of collection, I have collected a complete set of learning materials and high-definition detailed Android architecture advanced learning maps and notes to share with you for free. I hope to have some reference and help for friends who want to become architects.

The following are some screenshots of the information, full of sincerity: especially suitable for Android programmers with development experience to learn.

Free way to receive materials: click on my GitHub ~

No matter what difficulties we encounter, it should not be a reason for us to give up!

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