Xamarin Platform

The future of apps
Rui Marinho
Software Engineer
The future of apps

The future of apps
Global Overview
MODULES
1 INTROTO XAMARIN
2 IOS DEVELOPMENT USING XAMARIN
3 ANDROID DEVELOPMENT
4 SHARING MORE CODE – XAMARINFORMS
5 UI TESTS
6 INSIGHTS

The future of apps
1 - Intro to Xamarin
• What’s is Xamarin
• Xamarin with Visual Studio
• What you require to get started
• Demo – Hello Xamarin iOS & Android

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500+
partners
10,000+ 1.2M
customers downloads

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10,000+ customers, 100+ of the Fortune 500

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Businesses are rapidly appifying
The number of enterprise
applications optimized for mobility
will quadruple by 2016.”
“

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Make it fast, easy, and fun to
create great mobile apps.
Our mission

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Stay current
Your priorities when building apps
Works EverywhereNative 5-Star App Integration

The future of apps
Xamarin : the complete mobile lifecycle
BUILD TEST MONITOR ACCELERATE

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Train developers for mobile
and keep skills current
Test any app on 2,000 real
devices in the cloud
Xamarin: the complete mobile lifecycle
Use C# to build native
apps for iOS and Android
Monitor performance and user
behavior in live apps

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Xamarin 4: the complete mobile lifecycle

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Silo Approach
iOS WindowsAndroid
Objective-C
Xcode
C#
Visual Studio
Java
Android Studio
No shared code • Many languages & development environments • Multiple teams

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Write Once, Run Anywhere
App Generator
Lua
Javascript
Actionscript
HTML+CSS
Limited native API access • Slow performance • Poor user experience

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Xamarin Platform: native UX and shared code
Shared App Logic
BUILD TEST MONITOR
iOS C# UI Android C# UI Windows C# UI
Shared App Logic
ACCELERATE
Shared App Logic
Shared UI

The future of apps
Xamarin’s Unique Approach
Shared C# codebase • 100% native API access • High performance
iOS C# UI Windows C# UIAndroid C# UI
Shared C# Mobile C# Server
Linux/Mono
CoreCLRAzure
Shared C# Client/Server

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Anything you can do in Objective-C, Swift, or Java
can be done in C# and Visual Studio with Xamarin.

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Native Performance
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.

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✓Always Up-to-
Date
Same-day
support:
• iOS 5
• iOS 6
• iOS 7
• iOS 7.1
• iOS 8
• iOS 9
Full support for:
• Apple Watch
• Google Glass
• Android Wear
• Amazon Fire TV
• and much more

The future of apps
Xamarin Platform: native apps across platforms

The future of appsBUILD TEST MONITOR LEARN
Demo

The future of apps
2 - IOS DEVELOPMENT USING XAMARIN
• How Xamarin.IOS works
• Demo – iOS simple app – UITableView and
MapKit

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iOS – 100% API Coverage
MapKit UIKit iBeacon CoreGraphics CoreMotion
System.Data System.Windows System.Numerics System.Core System.ServiceModel
System.Net System System.IO System.Linq System.Xml

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Xamarin.IOS Execution Model
device.

The future of appsBUILD TEST MONITOR ACCELERATE
Demo

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2 – Recap
• How Xamarin.IOS works
• IOS App Lifecycle
• Using UITableView
• Using Storyboards
• Using MapKit
• Using Segues

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3 – ANDROID DEVELOPMENT USING XAMARIN
• How Xamarin.Android works
• Demo – Android simple app – Listview and Maps
• Start with code sharing techniques

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Xamarin.Android Execution Model
device.

The future of apps
Android – 100% API Coverage
Text-to-speech ActionBar Printing Framework Renderscript NFC
System.Data System.Windows System.Numerics System.Core System.ServiceModel
System.Net System System.IO System.Linq System.Xml

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#if Conditional Blocks
• Enable / Disable code based on the target platform
• Platform specific compilations constants :
• _IOS_
• _ANDROID_
• NETFX_CORE
• For subtle differences in the API’s

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#if Conditional Blocks

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Partial Classes
• Shared Functionality in one code file
Ex: DataModel
• Platform specific code in another code file
Ex: DataModel.IOS
• Partial classes are compiled into a single class

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Shared Projects

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3 – Recap
• How Xamarin.Android works
• Android App Lifecycle
• Using Listview
• Using Intents
• Using Maps

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4 – SHARE MORE CODE – XAMARIN FORMS
• What’s Xamarin.Forms
• Xamarin.Forms Controls
• Rebuild App using Xamarin Forms
• More code sharing
PCL
MVVM
DI

The future of apps
Build native UIs for iOS, Android, and Windows Phone from a single,
shared C# codebase.
Meet Xamarin.Forms

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Xamarin + Xamarin.Forms
Traditional Xamarin
Approach
With Xamarin.Forms:
More code-sharing, all
native
iOS C# UI Windows C# UIAndroid C# UI
Shared C# Backend
Shared UI Code
Shared C# Backend

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What’s included
✓ 40+ Pages, layouts, and controls
(Build from code behind or XAML)
✓ Two-way data binding
✓ Navigation
✓ Animation API
✓ Dependency Service
✓ Messaging Center
Shared C# Backend
Shared UI Code

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• <?xml version="1.0" encoding="UTF-8"?>
• <TabbedPage xmlns="http://xamarin.com/schemas/2014/forms"
• xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
• x:Class="MyApp.MainPage">
• <TabbedPage.Children>
• <ContentPage Title="Profile" Icon="Profile.png">
• <StackLayout Spacing="20" Padding="20"
• VerticalOptions="Center">
• <Entry Placeholder="Username"
• Text="{Binding Username}"/>
• <Entry Placeholder="Password"
• Text="{Binding Password}"
• IsPassword="true"/>
• <Button Text="Login" TextColor="White"
• BackgroundColor="#77D065"
• Command="{Binding LoginCommand}"/>
• </StackLayout>
• </ContentPage>
• <ContentPage Title="Settings" Icon="Settings.png">
• 
• </ContentPage>
• </TabbedPage.Children>
Native UI from shared code

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Layout
s
Pages
Stack Absolute Relative Grid ContentView ScrollView Frame
Content MasterDetail Navigation Tabbed Carousel

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

Which Xamarin approach is
best for your app?
Xamarin.Forms is best for: Xamarin.iOS / Xamarin.Android is best for:
• Data entry apps
• Prototypes and proofs-of-concept
• Apps that require little platform-specific
functionality
• Apps where code sharing is more important
than custom UI
Learn more: xamarin.com/forms Learn more: xamarin.com/platform
• Apps that require specialized interaction
• Apps with highly polished design
• Apps that use many platform-specific APIs
• Apps where custom UI is more important than
code sharing

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5 – UI Tests

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Android fragmentation
Brand Fragmentation
2012
500
device brands
2015
1,294
device brands

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iOS diversification
3D Touch
iPhone 6s
series only
Apple pencil
iPad Pro only
Multi Tasking
Only select iPads
iPads
iPod
touch
iPhones
Form factors iOS 9 features

The future of apps
Xamarin Test Cloud: automated testing on thousands of devices

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What’s new in Xamarin Test Cloud?
Integrated
with Platform
UITest 1.0
BUILD TEST MONITOR
Test Recorder
ACCELERATE

The future of appsBUILD TEST MONITOR
Demo
ACCELERATE

The future of apps
“Xamarin Test Cloud has saved us 2,000
monthly manual testing hours.”
Steve Robbins, CTO

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6 – Insights

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Monitoring your app in real time
Is my app crashing? What features are popular?
Does it perform well?
How many people are using it?
What countries are users in?Do users stick with the app?
What devices are they using?

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Introducing Xamarin Insights

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//Crash Report
Insights.Report(exception);
//Feature Usage
Insights.Track(“Splash Page”);
//Timed Events
Insights.TrackTime(“TimeToSync”);
//User Sessions
Insights.Identify(“Steve”, user_traits);

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We wouldn’t have caught the bugs as early as
we did without Xamarin Insights. No other
suppliers offered the kinds of benefits we’ve
seen from Xamarin. The ability to trace a user
journey so we can see exactly what led up to an
issue and receive detailed information about
crashes has been tremendously helpful.”
“
Yos Noor
Head of Research and Innovation
reed.co.uk

The future of apps
What’s Xamarin University?
BUILD TEST MONITOR
Reduced renewal
pricing
Over 60 classes Guest Lectures
and office hours
Certification:
Be recognized for
being a mobile
and Xamarin
expert
ACCELERATE

The future of apps
Xamarin : the complete mobile lifecycle

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How to buy: a la carte
All Xamarin customers get
+Free Test Cloud time
+Free Insights crash reporting

The future of apps
Xamarin Ultimate
xamarin.com/ultimate

The future of apps
evolve.xamarin.com
April 24-28 Orlando, FL

Xamarin Platform

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