Team Technologies LLC consists of mobile developers Oleg and Nazar. The document discusses developing cross-platform mobile applications using Xamarin. It outlines why native mobile development is important, what Xamarin is, and how to architect mobile apps in Xamarin including using Xamarin Forms. It provides an agenda and overview of the topics that will be covered.

1. Team Technologies LLC
Oleg
Mobile Developer
Nazar
Mobile Developer
Лекція №8 від провідних .NET розробників з

2. Developing Cross-Platform Applications

3. Agenda
• Why Native?
• What is Xamarin?
• Architecting Mobile Apps
• Xamarin Forms
• Demo

4. Why Native?

5. The Anatomy of a Native App
Xamarin apps look and feel native because they are native
Native User Interfaces Native API Access Native Performance

6. Cross-Platform Mobile Development
• Building high-quality Apps is hard:
• Different presentation styles, interaction styles and software stacks
• Devices have different screen sizes, input modes and hardware capabilities
• New devices and OS versions are introduced multiple times per year
• Network connectivity and power levels
fluctuate widely in typical usage scenarios
• New consumer applications regularly
extend and revise the standards and
set the bar higher for good mobile
applications

7. Xamarin.iOS does full Ahead Of Time
(AOT) compilation to produce an ARM
binary for Apple’s App Store.
Xamarin.Android takes
advantage of Just In Time
(JIT) compilation on the
Android device.

8. What is Xamarin?

9. Xamarin brings open source .NET to mobile
development, enabling every developer to
build truly native apps for any device in C#
and F#.
What is Xamarin?

10. What is Xamarin?

11. Make it fast, easy and fun
to create great mobile apps
Xamarin’s Mission

12. Xamarin Mobile Lifecycle

13. Architecting
Mobile Apps

14. Build App Multiple Times
• Expensive to staff
multiple platform-
specific teams
• Expensive to maintain
multiple code bases
• Slows innovation

15. The Write-Once-Run-Anywhere Approach
• Non-standart UI
• Limited API access
• Non-native performance
• Poor user experience

16. Xamarin’s Unique Approach
Native With
Code Sharing

17. Xamarin Designer for iOS in Xamarin Studio

18. Anything you can do in Objective-C or Java
can be done in C# with Xamarin using Visual Studio

19. Xamarin
Forms

20. Portable Class Libraries

21. Xamarin Architecture Choices

22. Xamarin.Forms
Quickly and easily build native
user interfaces using shared code
Xamarin.Forms elements map to
native controls and behaviors
Mix-and-match Xamarin.Forms
with native APIs Shared App Logic
Shared UI Code

23. Pages
Content MasterDetail Navigation Tabbed Carousel

24. Layouts
Stack Absolute Relative Grid ContentView ScrollView Frame

25. Controls
ActivityIndicator BoxView Button DatePicker Editor
Entry Image Label ListView Map
OpenGLView Picker ProgressBar SearchBar Slider
Stepper TableView TimePicker WebView EntryCell
ImageCell SwitchCell TextCell ViewCell

26. NuGet Package Manager
NuGet support combined with the Xamarin Component Store gives Xamarin
developers the most comprehensive ecosystem of libraries at their fingertips

27. Why Xamarin?

28. Better Mobile Productivity

38. Event Tracking

39. Issue Tracking

40. Issue Tracking

41. Issue Tracking - Detail

42. Issue Tracking – Device & User Data

43. Demo

44. Q & A