.NET developers everywhere can easily add native mobile developer to their resume with Xamarin for Visual Studio. Join Judy McNeil, Xamarin University mobile expert, to learn how to build your first Android app — completely in C# — with Xamarin.Android and Visual Studio. Watch webinar recording at aka.ms/XamUAndroidApp Explore Xamarin University at xamarin.com/university

2. university.xamarin.com

3. Microsoft: Your Complete Mobile Solution

4. Deploy to emulator
and device

5. iOS
Xamarin’s unique approach
Shared C# codebase • 100% native API access • High performance
Windows C# UI

6. What is Xamarin.Android?
C# source Native execution

7. Mono and ART VMs run side-by-side to execute a Xamarin.Android app
Xamarin.Android execution
Android
Runtime (ART)
Mono
Runtime
Linux Kernel
android.*
libraries
java.*
libraries
.NET
libraries
Your
IL code

8. Xamarin.Android – 100% API coverage
Text-to-speech Toolbar Printing Framework Renderscript NFC
System.Data System.Collections System.Numerics System.Core System.ServiceModel
System.Net System System.IO System.Linq System.Xml
C#

9. Always up-to-date
Full support for all Android versions

10. Xamarin Platform support
Broad support for Android devices, including
phones, tablets, Android Wear and Amazon Fire TV

11. Open Source – open.xamarin.com

13. Develop on Mac or Windows
Microsoft Visual Studio
on Windows
Visual Studio for Mac
on macOS (preview)

14. Development workflow

15. Activities: a collection of collaborating parts that
comprise Android apps
App structure
Activity 1
UI
Code
Activity 2
UI
Code
Activity 3
UI
Code
Data files,
images, etc.
MyApp

16. Activity definition
<LinearLayout ... >
<TextView ... >
<EditText ... >
<Button ... >
<TextView ... >
</LinearLayout>
Pi.axml
[Activity]
public class PiActivity : Activity
{
...
SetContentView(Resource.Layout.Pi);
}
PiActivity.cs
An XML layout file
that defines the UI
The related C# class
provides the behavior

19. Integrating .NET Libraries
You can integrate
your shared
business logic
packaged as a PCL

20. You can use JNI or a Bindings Library to incorporate Java libraries into your
Xamarin.Android app
Integrating Java Libraries
PayPal TritonPlayerArcGIS ...
Mapping Finance Music

21. Set the ID of a View in XML using the id attribute and the syntax @+id/
Access UI from code
<EditText android:id="@+id/digitsInput" ... />
Set an id
in the XML
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.Pi);
var et = FindViewById<EditText>(Resource.Id.digitsInput);
et.TextChanged += OnTextChanged;
}
Lookup
in code

24. Xamarin.Android UI is
built from Google’s
controls and layout
panels, wrapped in C#
by Xamarin
Android UI

25. Get fully native look and
feel with native controls
Native UX

26. Visual Studio provides
a UI Designer on
Windows and macOS
UI Designer

28. Get Started Today
xamarin.com/download

29. Free self-guided courses

30. Thank you
@flyinggeekette
jumcn@microsoft.com

31. Q&A
Samples available at:
https://aka.ms/raz619