Preface
I often hear people in the group have some negative attitudes towards Android, saying that Android is cold and want to change direction, but if you can become a big cow by changing direction, then everyone can change it.
In fact, there is a "two-eight" law in any direction. There are always 20% of good people. We have to strive to become that 20%, so we must gradually increase our requirements, step out of our comfort zone, and try to break the game!
Now you can no longer stay in the proficient use of RxJava, Retrofit, OkHttp and various image libraries, but must master them thoroughly at the source level. To be clear, no matter how awesome a library is, it is also an awesome author, so we must understand the principles as much as possible.
I would like to give you some suggestions. First, you must endure loneliness and not be disturbed by the outside; second, you must develop a long-term systematic learning plan and persevere; finally, pay attention to learning methods, not casual learning, many people only read books and blogs, but Never try to practice it, the understanding will certainly not be too deep, and it will be easy to forget over time.
If you want to take a high salary to achieve a qualitative leap in improving your salary, the quickest way is for someone to take you to analyze the source code and framework together, so that learning is the most efficient, so here I share some source code and framework videos.
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These are questions that are often asked in interviews with first-line Internet companies such as Tencent, ByteDance, Meituan, and Ali. I have classified these knowledge points according to the knowledge framework, so that you can check and review them easily. Familiar with the knowledge points in the materials will greatly increase the probability of passing the first two rounds of technical interviews.
Because there are many interview questions involved, the length is longer, so there is a way to receive them at the end of the article!
java aspect
- Usage analysis of four Java thread pools
- How many file copy methods does Java have? Which one is the most efficient?
- Use FileChannel (file channel) to achieve fast file copy
- JVM class loading mechanism detailed JVM class loading process
- JVM class loading mechanism detailed class loader and parent delegation model
- Several ways to achieve thread synchronization in Java
- Java memory management: deep into the Java memory area
- ………………
computer network
- The soul of HTTP, consolidate your HTTP knowledge system (intensive reading is recommended)
- Analysis of HTTPS principle and its use in Android
- HTTP resumable transmission (blocked transmission)
- What is the principle of HttpDns
- Implementation of HttpDns access and global replacement
- The difference between TCP, UDP, HTTP, SOCKET
- ………………
operating system
- The difference between thread and process (what is the resource allocation)
- Process communication
- Memory space allocation
- Deadlock The conditions of the deadlock (detailed example) Methods to avoid deadlock
- ………………
Design Patterns
- Generally speaking, you know which modes you know, and you must explain the applicable scenarios
- Singleton mode, lazy man, hungry man, thread safety, double lock
- Observer mode
- Adapter mode
- Appearance mode
- ………………
android aspect (generally asked according to the project)
- android process communication
- service
- handlerThread
- handler operation mechanism 1 time
- recyclerView caching mechanism 1 time
- view redraw
- ………………
Project aspect
- Interaction between fragment and activity
- What is the safety of using webview? And js call each other
- How to ensure that there is no conflict when reading and writing files in the process of resuming transfer description
- Asynctask memory leak why the leak solution what is the debugging tool
- MFCC process recording session (Quick hands asked a lot of details and asked to write pseudo code)
- MVP
- The difference between recyclerView and listview caching mechanism too many items will memory leak
Finally, I have compiled a lot of advanced PDF technical documents for Android. And some real interview questions analysis documents of big factories. Friends who need it can click GitHub to get it directly
The road of Android senior architect is very long, let's encourage together!
)Direct access method**
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The road of Android senior architect is very long, let's encourage together!