Foreword:
The development of Android application development has become a very mature technology direction. From the current situation, Android development is quite hot, but advanced Android development talents are relatively few. Now mobile Internet developers are gradually starting to pay attention to plug-in technology. , Performance optimization, industry new technologies, system architecture and other advanced technologies. This has also created a phenomenon. Android developers feel that the industry is now in a two-tier environment. The technology is not comprehensive, and it is still at the low-end technology level. It is hard to write code for a year. A salary increase of 2,000 yuan, crazy overtime work, salary cuts, and constant fear of being laid off, but middle and senior developers are favored by enterprises. Salaries are getting higher and higher, and there are also market positions. The status quo that many mid-to-low-end developers compete for one position, while mid-senior developers compete for multiple positions.
So as an Android developer, how do you break through the status quo and become a member of the architect.
1. BAT related interview points:
1. Binder communication principle and mechanism
2. Multi-process communication
3. Componentization. The difference between plug-in and how to choose
4. Plug-in understanding
5. Hot repair principle
6. Understanding of AMS 7.
What is the difference between AOP and OOP, The principle of AOP
8. The principle and general idea of
QQ skinning 9. The Android virtual machine
10. The specific steps and applications of image compression
11. How to decompile and encrypt
12. The principle of serialization and deserialization
13. The principle and principle of Handler understanding
Two, algorithm collection notes
1. Hash
2. Minimum spanning tree algorithm
3. Shortest path algorithm
4. KMP algorithm
5. Search algorithm
6. Sorting algorithm
Three. Thread. Multi-thread. Thread pool and small problems in interview
1. How to start threads 2. The
difference between run() and start()
3. How to control the number of threads that a method allows concurrent access to?
4. The difference between wait and seelp methods in Java
5. Reasons for thread blocking
6. Ideas on how to close threads?
7. How to synchronize and ensure thread safety
8. Reduce the size of the APK package
9. About memory leaks, memory jitter optimization and solutions
4. List of small knowledge
1. The difference between object-oriented and object-oriented 2. The difference between
Java and C++
3. Object-oriented features
4. The difference between interface and abstract class
5. Data structure and design pattern
- A brief overview of the six principles of design patterns
- Classification of design patterns
3. HashMap implementation principle
6. List of Java Core Knowledge
1. The difference between sleep and wait
in a thread 2. The difference between start() and run() in Thread
3. The difference between overloading and rewriting in Java
4. Tcp/IP three-way handshake, four waves
Seven, performance optimization
1. In the three-level cache of the picture, the picture is loaded into the memory. If the memory is about to burst, what will happen? How to deal with it?
2. WebView performance optimization?
3. How much memory should be used to load a high-definition picture
4. The difference between memory leak and memory overflow? What tools does AS have to detect memory leaks
5. How does Bitmap deal with large images and how to prevent OOM?
6. Performance optimization, how to ensure that the application starts without freezing? How to deal with the black and white screen?
End of sentence
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 logic problem.
However, senior engineers will consider a lot when they get the requirements, the feasibility of the technology? Does it help existing businesses? 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. Must be learned and proficient
These are the cores of Android related technologies, as well as advanced Java
Some techniques necessary for advanced advanced. Like the actual combat of mobile development architecture projects, etc.
Android cutting-edge technology; including componentization, hot upgrade and hot repair, and 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?
Just 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 exceed 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.
If you like it, please help forward and like it so that more people in need can see it. Thank you!
I have all the technical information contained in the above system outline. You can share it with friends in need for free!
, And take action to improve oneself, become harder for success. Then what I did all made sense.
If you like it, please help forward and like it so that more people in need can see it. Thank you!
I have all the technical information contained in the above system outline. You can share it with friends in need for free!