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foreword
Interviews are an important part of job hunting. For Android developers, the interview will involve a lot of hard-core dry goods. The following are some common questions during the interview process, hoping to help you achieve good results in the interview. Enter the factory as soon as possible!
Android basics
1. Android application life cycle
To answer this question, you need to understand the Android application lifecycle. The life cycle of an Android application includes: onCreate(), onStart(), onResume(), onPause(), onStop(), onDestroy(). Mastering these functions is very helpful for understanding the operating mechanism of Android applications.
2. Android layout
Layout is one of the most basic components in an Android application, and understanding common layout types is very important for writing high-quality Android applications. Common layout types include: LinearLayout, RelativeLayout, FrameLayout, TableLayout, etc.
3. Android event handling
Event processing in Android applications includes touch events, focus events, and long press events. In Android development, event handling is a very important part. Mastering event handling can improve the user experience of your application.
Android performance optimization
1. Layout optimization
Layout optimization is an important part of Android performance optimization. By optimizing the layout structure, the running speed and memory usage of the application can be improved. Common layout optimization methods include: reducing layout levels, using labels, using relative layouts, etc.
2. Image optimization
Image optimization is another important aspect of Android performance optimization. In Android applications, images are very memory-intensive and performance-intensive resources. By using appropriate image formats, compressing images, and using caches, you can effectively reduce the impact of images on performance.
3. Memory management
Memory management in Android applications is very important. Understanding Android's memory management mechanism can help you write efficient Android applications. Common memory management methods include: using LRU algorithm for memory caching, using soft references and weak references, etc.
Android framework and tools
1. Android SDK
Understanding the Android SDK is the foundation of Android development. Mastering the use of Android SDK can help you better develop Android applications.
2. Android Studio
Android Studio is the official development tool recommended by Android. Mastering the use of Android Studio can improve development efficiency and code quality.
3. UI component library
UI component library is a very important resource in Android development. Understanding and using the UI component library can improve the user experience and development efficiency of the application. Common UI component libraries include: Material Design Library, Dagger UI, etc.
epilogue
The above are some common hard-core dry goods in Android interviews. During the interview process, the interviewer usually asks corresponding questions based on the candidate's actual work experience and ability. Mastering these hard core dry goods can make you more confident and calm in the interview.
More interview dry goods, due to the excessive content of the document, so in order to avoid affecting everyone's reading experience, only part of the content is shown here in screenshots, and there is a free way to get the detailed and full version at the end of the article!
PS: (At the end of the article, there is also a small benefit of using the Chat G PT robot!! Don’t miss it)
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 Aspects
Design Patterns
Computer Networking Aspects
Kotlin Aspects
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 in 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 binary search algorithm
How to efficiently solve the rainwater problem
How to remove repeated elements in ordered arrays
How to efficiently perform modular exponentiation
How to find the longest palindromic substring
Chapter 6 Andrio Framework
●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
●…
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