Xamarin meetup to share our experience on real project

1. Driver’s notes

2. What this all about?
Application for employees of service station
• Serves for helping inspector to take car
inspection
Contains nice feature like car searching,
drawing tool for photos
• Very customizable

3. “A long time ago in a town far, far away…”

4. “A long time ago in a town far, far away…”

5. “A long time ago in a town far, far away…”

6. “A long time ago in a town far, far away…”

7. “A long time ago in a town far, far away…”

8. “A long time ago in a town far, far away…”

9. “A long time ago in a town far, far away…”

10. “A long time ago in a town far, far away…”

11. “A long time ago in a town far, far away…”

12. “A long time ago in a town far, far away…”

13. What is going on there?

14. How did we do that?
TechMan
Xamarin
MvvmCross
… and little
bit of magic


15. Fun with the apples

16. iOS overview
Make beauty things in easy
way
•Do things that you allow to do
Be concern about future
changes

17. Autolayouts
• - Very convenient tool
• - Along with sizeclasses allows
create layout for all devices
• -Not quite easy operate from
code

18. UITableviews
● Source delegates
● Cell reusing
● Mvvmcross cells

19. Left menu
- Was rewritten from obj-c to Xamarin
- It’s a simple table with content View
- Contains logic for validation, selection

20. Memory considerations. Instruments.

21. Memory considerations. Actions
● Correct way to destroy UIView
● Avoid image low-level operations on runtime
● UIPicker views

22. Column Layout
● Autolayouts are for noobs

23. Android

24. Few words about Android
● Do easy things on compound way
● Markup language
● Activity lifecycle
● Fragments

25. About devices
● Wide variety android devices and screens
● Dip
● Scale sizes

26. Memory considerations. Tools

27. Memory considerations. Actions
● Weird way to clean image
● Activity lifecycles to clean everything up
● Caches

28. Bitmap loading
● InJustDecodeBounds
● SampleSize
● Mutable bitmaps

29. Coding style 

30. Coding style 
● name conventions
● comments, regions
● logging

31. Additional features
● UITests
● Insights

32. Techman testing
iOS

33. Techman testing
Android

34. Test analytic

35. Jira bug tracker

36. Validation

37. Memory issue
A lot of photos….. Oops! App Crashes!

38. Manual testing
Better do automatically….

39. IOS vs Android

40. Memory warning Memory warning
Back button on device Minor bugs
Validation issues Validation issues
Scaling for different Android
device
Design migration from IOS
Android IOS

41. Cute slide from devs 
Thanks Oxana!
Techman love you! … And we too!

42. Thanks!