Preface
The job-hopping season of Golden 9th and Silver 10th is coming to an end, but it is still not easy to find a job this year. I believe that everyone is in urgent need of an Android interview collection. Let me share with you my long-cherished Android high-level interview collection for your study!
Interview outline
1. Java foundation, object-oriented, collection, thread usage;
2. Android model adaptation, SDK adaptation, memory optimization, memory overflow, memory leak; 3. MVC/MVP/MVVM usage scenarios;
4. Understand and can Use the latest popular open source library RXjava+Retrofit+OKHttp, Glide, EventBus, etc. 5. Use of JNI and NDK, familiar with Framework.
Frequent interview questions
1. Object-oriented (OOP)
2. Data type
3. The difference between equal and ==
4. String running speed: StringBuilder, StringBuffer, String
5. Queue, Stack stack
6. ListView mechanism
7. Fragment life cycle
8. Four Large reference types
9. Threads, processes and their communication methods
10.
PackageManagerService 11. Binder mechanism
12. Launcher implementation
13. Android version features
14. BroadcastReceiver broadcast
15. RecycleView
16. Comparison of various collections SparseArray, HashMap, ArrayMap, LinkedList, ArrayList
17. SQLite upgrade
18.
Bitmap
19. Handler mechanism 20. Performance optimization techniques
21. ANR
22. Custom View
23. MVC, MVP, MVVM three architecture designs
24. APP startup process
25. Plug-in
26. Kotlin multi-platform Application static programming language
27. Framework working principle
28. Android screen adaptation
29. Event distribution mechanism
30.Android animation classification: view, attribute, frame, gif
31.Android process
32.Android five storage methods 33.Screen
rotation Activity life cycle
34.Activity four startup modes
35.CPU, GPU working principle
36.UI stuck reason
37. Application life cycle
38. How to avoid security and stability caused by the introduction of open source libraries?
39. Simple audio/video format
40. Thread synchronization method
41. Thread-safe singleton
42. Serializable, Parcelelable
43. Service startup method and life cycle
44. Android common layout
45. Http, Https, Volley, OkHttp, RxJava + Retrofit + OkHttp, TCP, UDP
46. How to save memory usage and actively reclaim memory?
47. How does Activity generate View?
48. Why use multithreading?
49. On-site protection
50. Memory overflow and memory leak
51. JNI and NDK
52. Common design patterns and their realization ideas and functions
53. Similarities and differences between
HashMap , HashTable, and HashSet 54. Reasons for memory leaks in Android and optimization solutions
55. LeakCanary Open source tool for memory leak checking
56. Multithreading, thread pool
57. Tencent Bugly
58.
Glide
59. Fresco 60. React
If you lack direction on your way to advancement, you can click on my [Github] to join our circle and learn and communicate with Android developers!
All the following content is available on GitHub!
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A full set of manuals for Android advanced learning
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Android benchmarking Ali P7 learning video
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BATJ Android high-frequency interview questions
Finally, borrow my favorite Steve Jobs quotation as the end of this article:
People can't do too many things in their lifetime, so everything must be done wonderfully.
Your time is limited, so don't live for others. Don't be limited by dogma, don't live in other people's ideas. Don't let the opinions of others influence your inner voice.
The most important thing is to be brave to follow your own heart and intuition. Only your own heart and intuition know your own true thoughts. Everything else is secondary.
Live for others. Don't be limited by dogma, don't live in other people's ideas. Don't let the opinions of others influence your inner voice.
The most important thing is to be brave to follow your own heart and intuition. Only your own heart and intuition know your own true thoughts. Everything else is secondary.