Overview of Xamarin's TODO application ecosystem.

1. Hitchhiker's Guide to Using
Xamarin with RESTful Services
Heather Downing

2. Intro

3. Heather Downing
@quorralyne
DigitalLightCycle.Blogspot.com
quorralyne@gmail.com
❖ Technical focus in .Net & mobile apps
❖ Experience working with Fortune 500
companies
❖ Speaker and entrepreneur
❖ Horseback Archery Competitor

4. Content
1. Environment Preparation
2. DEMO: Running Xamarin Forms with Emulators
3. The Xamarin Forms Approach
4. DEMO: Consuming a REST Service
5. REST API Overview
6. DEMO: Publishing your Web API Project to Azure

5. What you will accomplish...
❖Jumpstart into working with the Xamarin Studio IDE
❖Run basic app with Xamarin Android Player and/or xCode emulators
❖Connect to an existing third party REST API with existing app
❖Creation of a very simple Xamarin Forms application from scratch
❖Publish a completed Web API project to Azure (inside Visual Studio)

6. Environment
Preparation

7. DEMO: Emulators

8. Xamarin
Android Player
https://xamarin.com
/android-player

9. xCode iOS
Simulator
http://developer.apple
.com/xcode/

10. The Xamarin Forms
Approach

11. “Xamarin Forms is a very clever and one
might say, elegant, solution to the Write
Once, Run Anywhere, AND Don't Suck
problem.”
- Scott Hanselman

12. DEMO: Consuming REST

13. Xamarin
TodoREST App
https://developer.xamarin.
com/samples/xamarin-
forms/WebServices/TodoREST
/

14. REST API Overview

15. Todo REST API
Requires BASIC AUTHENTICATION
(Requires Username & Password)
Provides CRUD endpoints for Todo Items
Might benefit from adding machine
documentation such as Swagger to more
easily visualize Request and Response
objects
Hosted on Azure Mobile App Service
Not currently connected to any
database

16. Xamarin
TodoREST
Service
https://github.com/xamarin/x
amarin-forms-
samples/tree/master/WebServi
ces/TodoREST/TodoRESTService

17. DEMO: Publishing API

18. Swagger
(Swashbuckle
for .Net)
https://github.com/
domaindrivendev/Swashbuckle
http://swagger.io/

19. Additional Thoughts

20. “A common mistake that people make when
trying to design something completely
foolproof is to underestimate the ingenuity of
complete fools.”
- Douglas Adams, ‘Hitchhiker’s Guide to the Galaxy’

21. Resources
Web Services Overview: https://developer.xamarin.com/guides/cross-platform/application_fundamentals/web_services/
Consuming RESTful services Using Xamarin Forms: https://developer.xamarin.com/guides/xamarin-forms/web-services/consuming/rest/
Xamarin and Cloud Connected Apps: https://www.youtube.com/watch?v=qIr8xYSTv-I
YouTube Xamarin with REST Presentation: https://www.youtube.com/watch?v=VfoJCd_TMx0
YouTube - Xamarin with REST Presentation: https://www.youtube.com/watch?v=VfoJCd_TMx0
Common Pitfalls in Xamarin Apps: https://university.xamarin.com/guestlectures/avoiding-common-pitfalls-in-xamarin-apps
Azure Mobile Service with Xamarin: https://azure.microsoft.com/en-us/documentation/articles/app-service-mobile-xamarin-forms-get-started/
Xamarin Forms HttpClient code on Github: https://github.com/conceptdev/xamarin-forms-samples/tree/master/HttpClient
Guide on REST Authentication: https://developer.xamarin.com/guides/xamarin-forms/web-services/authentication/rest/
Example App: https://developer.xamarin.com/samples/xamarin-forms/WebServices%5CTodoREST/
Example App REST Service: https://github.com/xamarin/xamarin-forms-samples/tree/master/WebServices/TodoREST/TodoRESTService

22. Remember...
One bite at a time, you can
devour this robust and
impressively powerful
framework, and serve it to all
mobile users on a silver platter.

24. So long and
thanks for all
the fish.
Presentation Download:
http://www.slideshare.net/
quorralyne/
Heather Downing
@quorralyne
quorralyne@gmail.com