Xamarin Hack Day - Sydney 2016 - Introduction to Xamarin

www.xam-consulting.com www.michaelridland.com

Welcome Xamarin Hack Day

Sydney 2016

Agenda9:00 - Presentations & Challenges

Michael Ridland - Introduction to XamarinMatthew Robbins - Costs and Benefits Compiled XamlJernej Kavka - Code Sharing

10:30 - Challenges / Install-Fest / Mini-Hacks / Open Hacking1:00 - Lunch1:30 - Challenges / Install-Fest / Mini-Hacks / Open Hacking4:30 - Show and Tell - Show something you’ve built or learnt

How you hack is up to you!

Presenters will set challengesYou can do any of the challengesor work on your own stuffmentors will be available to assist

Michael Ridland

www.michaelridland.com

Mobile Technology Specialists

Thanks to our sponsors

Thanks to our Mentors and Presenters

Introduction to Xamarin

What is native?

The Anatomy of a Native App

Native User Interfaces Native API Access Native Performance

Xamarin’s (Traditional) Approach

Native With Code Sharing

Language Support

Functional Imperative/OOP

Base Class Libraries

Windows APIs

iOS APIs | 100% Coverage

Android APIs | 100% Coverage

Anything you can do in Objective-C or Java

can be done in C# or F# with Xamarin

Pro Tip

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.

Demos - Xamarin Traditional

Always Up To Date

Same day support for iOS 5, iOS 6, iOS 6.1, iOS 7, iOS 7.1, iOS 8…

Future Proof

Always up-to-date with the latest APIs from Apple and Google.

Full Support for Android TV, Fire TV, Android Wear, Google Glass, etc

Rich Library EcoSystem

Json.NET Rx

…and many more!

Development Environments

Development Environment

Xamarin StudioPC or Mac

Visual Studio PluginVS 2010/2012/2013

Development Environment

or even?

Visual Studio Integration

Android Designer

iOS Designer

Fully integrated into Xamarin Studio & Visual Studio

iOS 6 & 7 Storyboard support

Intuitive event handling

Support for auto-layout

Live preview of custom controls

Component Store

Component Vendors

Xamarin.Forms

Xamarin.FormsTraditional Xamarin approach

Shared UI Code

Xamarin.Forms: What’s Included?

40+ Pages, Layouts, and Controls Build from code or XAML

Two-way Data Binding Navigation Animation API Dependency Service Messaging Center

Xamarin.Forms: Pages

Content MasterDetail Navigation Tabbed Carousel

Xamarin.Forms: Layouts

Stack Absolute Relative Grid ContentView ScrollView Frame

Xamarin.Forms: 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

Xamarin.Forms Real World Tips

Beware……

Forms is easy… Easy is also deceptively simple…..

Beware……

I hate Xamarin.Forms

Beware……

Your still on a phone with limited resources… Forms Xaml is not like WPF, Xamarin don’t own the underlying

platforms With Forms you must build pages with Performance in mind…

Performance Tips

Reduce nesting StackLayouts encourage nesting Grid are great for reducing nesting

Avoid relative layout Reduce layout cycles Grids with Star and Static Height avoid layout cycles

Xamarin.Forms Power Controls

Not difficult to use (nearly as easy as StackLayout)

Works well with XAML (unlike relative)Can be used to create overlays/advanced UIsEasy to reduce nestingEasy to reduce layout cycles (Star and Static

Widths/Heights)

ListView with Cell Recycling

Much faster now with Cell Recycling Use the DataTemplateSelector for different cell styles Alternative to Grid when there’s a dynamic numbers of rows Avoid add/remove views when binding context change

Images on Android (especially in list)

Performance and Memory Issues Use FFImageLoader Image Caching Image Resizing

If the Image is local, it can still have issues in lists. We sometimes do a full custom renderer native cell for Android only.

Xamarin.Forms Real Apps

File -> New

Today’s Challenge

Build a view (maybe from http://snppts.io/latest or dribble) It can be simplified or adapted depending on your experience Improve the performance http://kent-boogaart.com/blog/jason-smith's-xamarin-forms-performance-tip

https://evolve.xamarin.com/session/56e205b0bad314273ca4d817

https://developer.xamarin.com/guides/xamarin-forms/deployment,_testing,_a

nd_metrics/performance/

Q & AMichael Ridland

michael@michaelridland.com

@rid00z

www.michaelridland.com

Xamarin Hack Day - Sydney 2016 - Introduction to Xamarin

Technology

Transcript of Xamarin Hack Day - Sydney 2016 - Introduction to Xamarin

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The DYNAMICS ROLES, RASHARD M. Kahlil Elijah Cashai Johnson Sydney Jones Jason Hack.

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