foreword
Since the beginning of this year, the economy has picked up, but it will take some time for the trend of industry job gap tightening to resume. Especially for Android development, it is even more difficult to jump to a high-paying position.
Therefore, if you want to break out of the encirclement, you must be fully prepared. In addition to a good-looking resume, brush up on recent technical interview questions. It is also necessary to prepare before the interview.
Technical preparations
This mainly includes the basics, advanced, function realization, and tool use.
Basic knowledge: Basic knowledge of Java, basic knowledge of Android Advanced knowledge
: Android framework, design patterns, performance optimization
Function realization: network programming, database, multi-threading
Tool usage: third-party libraries, programming tools
Here are some common interview questions:
Java basics:
What is polymorphism? How to achieve polymorphism?
What is an interface? What is the difference between interface and abstract class]?
What is an exception? What are the common exceptions in Java?
What are generics? What is the role of generics?
What is reflection? What is the role of reflection?
Android basics:
What is Activity? What is the life cycle of Activity?
What are Fragments? What is the life cycle of Fragment?
What is Service? What is the life cycle of Service?
What is BroadcastReceiver? What is the life cycle of BroadcastReceiver?
What is ContentProvider? What is the role of ContentProvider?
Advanced Android:
What is a Handler? What is the function of Handler?
What is AsyncTask? What is the role of AsyncTask? What are the flaws?
What are Intents? What is the role of Intent? What types are there?
What is Parcelable? What is the difference between Parcelable and Serializable?
What is Binder? What is the function of Binder?
Android architecture:
What is MVC, MVP, MVVM architecture? What's the difference?
What is Dependency Injection? What is the principle of Dagger2?
What is RxJava? What is the role of RxJava?
What is LiveData? What is the function of LiveData?
What are ViewModels? What is the role of ViewModel?
Android performance optimization:
What are ANRs? How is ANR generated?
What is a memory leak? How to avoid memory leaks?
What are Bitmaps? What are the points to pay attention to when loading, caching and compressing Bitmap?
What is Caton? How to avoid lag?
What is web optimization? How to optimize network requests?
personal experience
Be sure to spend more time recalling your past experiences, including the projects you have been involved in, the difficulties you encountered, and how you solved them. Your answer will affect the interviewer's impression of your technical ability, so be sure to review and sort out your past project experience. The project should be refined but not too many. No matter how many projects you do, it will not be as convincing as a good project.
There are many programmers, especially novices who have just entered this line, often lack relevant project experience, and do not know how to increase work experience.
There are many ways to gain work experience, you can make a mobile app and put it in the App Store, you can also write a small web application, but it requires a certain amount of self-study and creativity
If you feel a bit difficult, it is a good choice to participate in vocational training, where you can learn more professional knowledge and participate in some engineering projects to accumulate more experience.
practice makes perfect
In the interview, you need to give an answer immediately based on your own experience. If you want the answer to come out of your mouth, my suggestion is: Familiarize yourself with the source material of the answer. This requires you to be familiar with the details of the resume, including the technologies mentioned in the resume, the deeds that prove your ability, some problems that have been solved, the challenges that have been overcome, and so on. In this way, when there is an opportunity to perform, you can use it at your fingertips.
If you can't speak naturally and fluently, you need to practice more before the interview. Find a friend to practice with you, and be serious. Let your friends take your resume and ask random questions. This is equivalent to a mock interview process. You can think about how to connect your own experience to the questions. If you run into a question you can't answer in practice, that's great because you've spotted a preparation gap so you can remedy the problem before the interview.
Practice, practice, practice.
end
Finally, share an analysis of the answers to the real questions of the 2023 Android intermediate and advanced advanced most comprehensive exams
Due to the large content of the article and the limited space, the information has been organized into a PDF document. If you need the complete document of the answer to the real test questions of the most comprehensive and advanced Android test in 2023, you can scan the card below to get it for free~
PS: (At the end of the article, there is also a small benefit of using the ChatGPT robot!! Don’t miss it)
Table of contents
Chapter 1 Java Aspects
●Basic part of Java
●Java collection
●Java multithreading
●Java virtual machine
Chapter 2 Android
●Android four major components related
●Android asynchronous task and message mechanism
●Android UI drawing related
●Android performance tuning related
●IPC in Android
●Android system SDK related
●Third-party framework analysis
●Comprehensive technology
●Data structure
●Design pattern
● Computer network aspect
Kotlin aspect
Chapter 3 Audio and Video Development High Frequency Interview Questions
●Why can a huge original video be encoded into a very small video? What is the technology behind this?
●How to optimize live streaming within seconds?
●What is the most important function of the histogram in image processing?
●What are the methods of digital image filtering?
●What are the features that can be extracted from an image?
●What are the criteria for measuring the quality of image reconstruction? How to calculate?
Chapter 4 Flutter High Frequency Interview Questions
●Dart part
●Flutter part
Chapter 5 Algorithm High Frequency Interview Questions
●How to efficiently find prime numbers
●How to use the binary search algorithm
●How to efficiently solve the rainwater problem
●How to remove repeated elements in an ordered array
●How to efficiently perform modular exponentiation
●How to find the longest palindrome substring
Chapter 6 Andrio Framework Aspects
●Analysis of system startup process interview questions
●Analysis of Binder interview questions
●Analysis of Handler interview questions
●Analysis of AMS interview questions
Chapter 7 174 common interview questions in enterprises
●SD card
●Android data storage mode
●Broadcast Receiver
●What are the consequences of frequent sp operations? How much data can sp store?
●Difference between dvm and jvm
●ART
●Activity life cycle
●Application can start Activity
●…
A WeChat group chat robot based on chatGPT was built to answer difficult technical questions for everyone 24 hours a day. If needed, you can scan the QR code to join the group.
