slides used on the Portuguese Xamarin User group, about best pratices and pratices off how use xamrins technologies when implementing big consumer apps. Special focus on performance best pratices

1. Lisbon, 30th January 2016
Xamarin pratices on big ui
consumer apps
PTXug

2. Alexandre Marreiros
Speaker
C:> ping me @alexmarreiros amarreiros@gmail.comwww.digitalmindignition.com

3. Once upon a time
A client with a
technical DNA

4. Once upon a time
Who want’s a
Ritch Design
E-comerce
Application

5. Once upon a time

6. Once upon a time

7. Once upon a time

8. Once upon a time
Business people
starts to think the
APP Requirements

9. Once upon a time
Native APPS Designer’s
Strat their work

10. Once upon a time
Development team do
this, with Xamarin Forms

11. Once upon a time

12. Once upon a time

13. Xamarin Basics

14. Xamarin Basics

15. Xamarin Basics

16. Xamarin Basics

17. Xamarin Basics

18. Xamarin Basics

19. Xamarin Basics typical aproaches

20. Xamarin Share code

21. Xamarin Share code
shared project:
+ Can use #if when targeting multiple platforms (e. g. Xamarin iOS,
Android, WinPhone)
+ All framework functionality available for each target project (though
has to be conditionally compiled)
o Integrates at compile time
- Slightly larger size of resulting assemblies
pcl:
+ generates a shared assembly
+ usable with older versions of Visual Studio (pre-2013 Update 2)
o dynamically linked
- limited functionality (subset of all projects it is being referenced by)

22. Xamarin Share code

23. Xamarin Share code

24. Xamarin Performance

25. Xamarin Performance

26. Xamarin Performance

27. Xamarin Performance
public class B {
readonly WeakReference<A> aWeakRef;
public B (A a) {
aWeakRef = new WeakReference<A> (a);
}
}

28. Xamarin Performance
public void Dispose () {
publisher.MyEvent -= OnMyEventFires;
}

29. Xamarin Performance

30. Xamarin Performance

31. Xamarin Performance

32. Xamarin custom render
Custom Renderer Pattern

33. Xamarin UI tricks

34. Xamarin Forms

35. Xamarin Forms

36. Xamarin Forms or not

37. UI between devices

38. UI between devices

39. Q & A

40. References

41. Sponsors

42. C:> ping me @alexmarreiros