CodeFest 2019. Дмитрий Виноградов (Axel Springer) — Android. Производительность в Android-приложениях

Я расскажу об инструментах, которые помогут вам повысить производительность ваших Android-приложений. Поговорим о памяти, CPU, сетевых запросах, энергопотреблении, размере APK и скорости UI.

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1. Performance Dmitry Vinogradov Android developer Axel Springer
2. • Performance • Android Studio Profiler • CPU • Memory • Network • Energy • GPU • APK Analyzer • Tips
3. Performance is important • Happy User • Google Play Reviews • Google Play Search and Recommendation
4. The Performance Lifecycle Gather Insight Action
5. • Performance • Android Studio Profiler • CPU • Memory • Network • Energy • GPU • APK Analyzer • Tips
6. Menu: View -> Tool Windows -> Profiler
7. • Performance • Android Studio Profiler • CPU • Memory • Network • Energy • GPU • APK Analyzer • Tips
9. Trace recording
10. Call Chart
11. Flame Chart
12. Top Down
13. Bottom Up
14. Recording Configurations 1. Sample Java Methods 2. Trace Java Methods 3. Sample C/C++ Functions 4. Trace System Calls
15. 1. Sample Java Methods
16. 2. Trace Java Methods
17. 4. Trace System Calls
18. Trace Recording Options
19. • Performance • Android Studio Profiler • CPU • Memory • Network • Energy • GPU • APK Analyzer • Tips
20. Memory Profiler
21. Memory Allocation
22. Memory Dump. dump button
23. Memory Dump. Details
24. • Performance • Android Studio Profiler • CPU • Memory • Network • Energy • GPU • APK Analyzer • Tips
26. • Performance • Android Studio Profiler • CPU • Memory • Network • Energy • GPU • APK Analyzer • Tips
28. • Performance • Android Studio Profiler • CPU • Memory • Network • Energy • GPU • APK Analyzer • Tips
29. Frame 60 FPS 16 ms = 1 / 60
30. GPU Rendering
31. GPU Overdraw
34. • Performance • Android Studio Profiler • CPU • Memory • Network • Energy • GPU • APK Analyzer • Tips
35. Classes
36. Proguard mappings mappings.txt usage.txt seeds.txt
37. Compare
38. • Performance • Android Studio Profiler • CPU • Memory • Network • Energy • GPU • APK Analyzer • Tips
39. UI • Flat view heirarchy • ViewStub • <include>, <merge> • DiffUtil, notifyItem* • Avoid excess backgrounds
40. Memory • Avoid creating unnecessary objects (iteration, onDraw, onBindViewHolder) • Avoid memory leaks • SparseArray • ComponentCallbacks2
41. Network and Energy • Push (FCM) • Cache • Different picture quality or resolution • WebP or compressed PNG and JPEG • WiFi and Charger if can wait • Network batching
42. APK size • Remove unused code (minifyEnabled) and resources (shrinkResources) • Vector graphic and nine-patch • Multiple APKs or App Bundle

43. @start_android Dmitry Vinogradov Android developer Axel Springer Вопросы? startandroidpage www.startandroid.ru contact@startandroid.ru