Do's and Dont's of Android App Development

The usage of mobile apps has significantly increased and as android developers, it's our responsibility to create elegant applications that offer greater value to our users. In today's highly competitive times, it is crucial to follow best practices while developing Android apps to increase their chances of success. In this talk, we'll discuss the dos and dont's of Android App development that can help us achieve this goal.

As Android devices share more than 70% of mobile operating system market, the apps that we develop are going to run on wide variety of these devices. The openness of this operating system has enabled us to develop and deploy the apps easily, but the same apps get uninstalled quickly. We should practice and follow what is best to make them perform better and give best user experiences. This talk focuses on how to avoid making mistakes which may affect user experience and follow best practices.

Transcript

1. Senior Engineer, Quest Global Do’s and Dont’s of Android App Development Varsha Kulkarni
2. Android Development Introduction Do’s and Dont’s Ending note
3. Introduction
4. Android App - Under the hood
5. Android App Application Process (App components) Android OS (Linux based) Android Framework APIs JVM / DVM / ART Linux Kernel HAL Native C/C++ RAM (Cached) Home, Contacts, Clock, Maps, Gallery, Camera, Email, Browser, Phone.. Window Manager, Content Providers, View System, Resource Manager.. Media, Graphics, Surface Manager .. Device Drivers (Display, Camera, Bluetooth.. Core Libs, DVM/ART
6. Do’s and Dont’s
7. Do’s/Dont’s • Startup Time
8. App Startup Time - Optimize • Cold - App starts from scratch • Warm - Recreating app components • Hot - Just bringing back from Background to Foreground
9. App Startup Time - Optimize - Cold Start • Create App process • Launch Main thread • Layout screen • Initial draw • Time To Initial Display (TTID) • Time To Full Display (TTFD) Metrics
10. App Startup Time - Optimize - Cold Start • Method tracing or inline tracing • Baseline Profiles
11. Do’s/Dont’s • Startup Time • Thread Management
12. Main Thread Message Queue UI events UI rendering Other tasks?
13. Do’s/Dont’s • Startup Time • Thread Management • Memory Management
14. Memory Management RAM (Pages) Storage App zRAM Swapping Low memory
15. Do’s/Dont’s • Startup Time • Thread Management • Memory Management • Security
16. Security • Secure communication • Storage Security
17. Do’s/Dont’s • Startup Time • Thread Management • Memory Management • Security • Tools
18. Tools • Performance Monitoring • Code analysis • Firebase
19. Do’s/Dont’s • Startup Time • Thread Management • Memory Management • Security • Tools • Testing
20. Unit Testing • Early Defect detection • Documentation • Maintenance and Enhancement
21. Do’s/Dont’s • Battery • App permissions • Ads
22. Ending Note
23. References
24. Questions?
25. Thank you!