For our programmer : every year, it seems like it is urging death.
5 years old hurdle is a fate that every programmer cannot escape . Every year after passing, you are one step closer to this hurdle. Therefore, everyone is very anxious , and this anxiety is used by various self-media, public accounts, blog and other platforms. Every year, people say that the Internet is in a cold winter again, and a certain company has laid off employees on a large scale. Android development is not working, and negative news like is heard everywhere. Is
Android really not working?
From the perspective of the large industry environment, it is indeed true that companies of all sizes lay off employees , and it is also true that the capital market has reduced the popularity of Internet industry .
But from the perspective of Android's ecosystem, because of the open source attributes of Android, it is not only the mobile phones that use Android system, but also the car system, smart robots, smart TVs, community face recognition equipment, supermarket face payment machines, school electronic class cards , etc. are all used. This determines that Android is destined to last for a long time.
So I think as long as your own technical level is good , Android cannot die and your own position cannot die. Instead of spending this effort to worry about the Android market, should pay more attention to your own progress and growth.
In the current environment, I think most Android developers want to learn "in-depth framework source code". For many people, reading source code is a big problem. is very easy to give up halfway.
As an Android application layer development, I will provide you with several learning points that are more common and easy to learn in interviews:
`Four components startup process application startup process system startup process audio related content
Although it seems to be only these 4 small points, it will take at least half a year to learn, because the content involved is both numerous and profound.
How to learn Android Framework? has become an urgent problem for many people. Regarding how to learn Android Framework development knowledge , developers who are still confused can refer to this advanced document "Android Framework Source Code Development Manual" . Today I share it with you:
Get method: Follow my official account Android hard work or Contact the author Get these advanced Android development materials ~
1.Framework communication
Inter-process communication (Binder IPC mechanism)
- Linux memory binder basic
- Binder IPC communication principle
- in-depth Binder driver
- Binder interview summary (Ali articles)
in-process communication (Handler message mechanism)
- Loop message pump mechanism
- Message parsing
- Handler interview sharing (Goen Factory )
Practical Enterprise Architecture Communication
- LiveData Event Mechanism
2.Framework underlying service
AMS principle
- SystemServer Loading AMS
- AMS data structure
- AMS data structure
- Activtiy stack management
- AMS process startup for mobile phone 4AMS process in App startup
- Activtiy management
- AMS interview collection
- AMS principle practical
PMS principle
- Packagelnstaller installer process analysis
- PMS source code interpretation
- T10 level interview PMS summary
WMS Mechanism
- WMS kernel
- Window creation process
- Enterprise-level Toast and Window architecture system
- T10-level post WMS interview summary
3.Framework system resources
ServiceManager principle
- init.rc file starts key services
- service_ Manager process entry
- ServiceManager message training
- ServiceManager service storage svclist link list
- ServiceManager interview summary
Deep into the Contxt context
- Context and ApplicationContext 15
- Context Genealogy Analysis
- Contextmp and ActivityThread
- getActivity() and getContext () Memory difference
- takes you to understand different contexts Context 15
Deep in Resource resource loading
- resources.arsc file
- ResourcesManager Create Resource
- LoadedApk and Resource relationship
4.Framework event mechanism
Event distribution mechanism
- Three processes for Android event processing
- Event signal from kernel to IMS process
- IMS how to push data to ViewRootim to upper layer
- Android handles Down events responsibility chain mode
- Android handles Move events
- Handwriting simulation Android event distribution architecture
Event conflict resolution universal formula
- Category conflict event classification
- Category conflict event classification
- Category conflict priority
- Event conflict priority
- Event conflict simulation practical
5.Framework UI mechanism
UI drawing principle
- setContentView loading data core concept
- ViewRootlmpl drawing management
- Choreographer choreographer
- measurement mechanism (onMeasurement)
- placement mechanism (onLayout)
- T10 level interview UI drawing summary
UI customization practice
- RecycleView
- Webview
- ViewPager