Foreword:
Now that the 21st century has become the Internet era, more and more graduates choose to work on the Internet, and there are not a few who are engaged in mobile development. How to become an excellent Android architect has become a problem for most programmers. Although I have learned a lot of professional knowledge and technology in school, I lack practical experience. Although there are too many learning materials on the Internet, it is too scattered and not systematic. As a former interviewer, I know this well.
But if there are problems, there will be solutions. For this series of problems, 9 Alibaba architects jointly created an architect study outline, which not only lists the various knowledge points of Android in detail, but also learns the methods of learning. The ideas and learning routes are all summarized in it, so that you have a deep understanding and experience from the basic entry to the advanced architecture actual combat. Let us learn with the big guys! The content is a bit too much, you can pack it for download or collect and learn slowly.
1. Essential skills for architects to build the foundation:
Android applications are developed by Java language, and SDK is also written by Java language, so we have to learn Java language. In addition, although the kotlin language has received the official Android hot push, kotlin is also compiled into the java language and then run. For Android, as long as the SDK is not rewritten in kotlin, then the Java language needs to be learned. And the background server program of Androidapk is most likely to be built in java language, so learning java is also a necessity.
So what are the things in Java that we Android programmers need to learn? Because Android programmers are used to CV code blocks, the slightly more difficult Java foundations related to Android are almost always a threshold, such as generics, multithreading, reflection, JVM, efficient IO, annotations, serialization, etc. It is the object of the CV, and the programmer does not understand the principle, the specific content is shown in the figure.
2. Android framework architecture-Andlroid advanced UI and FrameWork source code
When it comes to FrameWork , you just need to go to Github to look at the source code of Tencent Matrix to know how important the knowledge of Framework is. Like frame drop monitoring, function instrumentation, slow function detection, ANR monitoring, and startup monitoring, you need to have a deeper understanding of the framework to know how to monitor, what mechanism to use to monitor, where to insert the function instrumentation, and reflection Which class, method, and attribute should be reflected...
3. 360° all aspects of performance tuning
Android performance tuning includes a lot of knowledge points, among which the key is design ideas and code quality optimization, program performance optimization, and development efficiency optimization. Our developers collectively refer to these as Android360° All aspects of performance tuning. In fact, in the software development process, many readers must have encountered system performance problems. The main steps to solve system performance problems are:
Evaluation: Perform a large number of targeted tests on the system to obtain suitable test data.
Analyze the system bottleneck: analyze the test data and find the hotspot (hotspot, namely bottleneck).
Performance optimization: optimize hotspot related code.
4. Interpretation of open
source framework design ideas The knowledge points in the open source framework design ideas in Android development are also more important. I believe everyone can see that in each company's recruitment, the requirements for the Android open source framework are relatively strict. If you want to fully understand, you have to learn to organize and plan: our common Android hot fix framework, plug-in framework, component framework, image loading framework, network access framework, RxJava responsive programming framework , IOC dependency injection framework, recent architecture Component Jetpack and other Android third-party open source frameworks, these are the design ideas of Android open source framework. As shown in the figure below: 
5. NDK module development
Android platform has supported C and C++ development since its birth. As we all know, the Android SDK is implemented based on Java, which means that third-party applications developed based on the Android SDK must use the Java language. But this is not the same as "third-party applications can only use Java." When the Android SDK was first released, Google declared that its virtual machine Dalvik supports JNI programming, that is, third-party applications can call their own C dynamic libraries through JNI, that is, on the Android platform, the "Java+C" programming method is It has always been possible. Recently, the most popular audio and video development technology also belongs to NDK module development. You can read this article about advanced audio and video: Click this article for advanced audio and video: As an Android programmer, proficient in audio and video development, no matter how cold the winter is, you can’t freeze you
6. Architect training into actual combat.
After learning the above knowledge, you should apply it to actual combat. In common actual combat: architecture design, online mall project combat, news client project combat, multi-format player project combat, Gradle automation project All belong to the top priority. 
Of course, the actual combat of small program projects is also something that Android developers must understand: 
7. WeChat small program
Ali architect's view on small programs:
The first point is that no matter whether the applet can shine on the mobile terminal in the future, there is no harm in learning it and mastering it.
The second point is that as far as the current version is concerned, it is still too closed. Developing a small program feels like walking around in a small circle delineated for us by WeChat. In the circle, we may get a very good development experience, but we can't go out even one step.
The third point is that between performance and convenience, convenience often wins in the end.
The third point is that those that can be developed with js will eventually be developed with js. 
8.Hybrid development and Flutter
want to become an excellent architect, the knowledge that needs to be mastered is a bit too much, and new technologies cannot be left to learn, just like Flutter
in Flutter, everything is a control! Everything is a control! Everything is a control! Keep this concept in mind . Text is a control, Image is a control, Icon is a control, scaffolding is also a control, and even the entire APP is a control.
Summary: I believe that the readers have already gained a lot from the growth path and learning method of the architect. Although the road of Android architect is very long, it still requires your unremitting efforts and learning together. Let's encourage! Over the years of working in Android development, more than 95% of the Android developers I have met have encountered the following fatal weaknesses!
1. Weak technical foundation:
My own foundation is poor, I have only experienced fast-food-style technical training, lack of systematic learning experience, and do not have a deep understanding of principles and underlying development.
Second, the project experience is fragmentary:
The work content is simple development of additions, deletions, revisions, and inspections. The project users experienced are very small and have not experienced complete large-scale project development.
3. Lack of experience in major projects:
Working in a small software company or outsourcing company for a long time, he has a narrow technical vision and slow capacity improvement.
Fourth, there is no breakthrough for a long time:
Although the working hours are very long, the work of the first year is almost repeated for N years, lacking core competitiveness.
In addition, the editor used free time to organize relevant materials for the learning route outline, which have been organized into PDF files, and I also take this opportunity to share with you for free:
1. Essential skills for architects: 
2. Andlroid advanced UI and FrameWork source code: 3. 
360° performance tuning: 
4. Interpretation of open source framework design ideas:
5. NDK module development: 
6. Architect training into actual combat 
7. WeChat applet: 
8. Hybrid development and Flutter : Afterwards 
: If you are on the road to an architect and feel confused and feel that your knowledge has expanded Now, maybe you have learned too much but not refined, and lack a complete outline of learning ideas. I think this article can help you. Small companies may not have the concept of an architect, and it is not so easy to get an architect position in a large company. But in any case, it is necessary to keep learning new technologies and to improve your own level. No matter which company you are in, you must have a strong technical level.
The materials mentioned in the article and the complete Architect study outline can be obtained directly here for free.
You can also get it by private message 666.
More information about the Android architecture can be obtained for free here