Tizen is an open source operating system used in many Samsung devices like smartwatches. It allows building applications using web technologies like HTML and JavaScript or C# and .NET Core. The talk covered the Tizen architecture, frameworks, and tools for developing different types of watch applications like widgets, watch faces, and apps. It demonstrated building a heart rate monitor app and watch face using MVVM and deploying them to an emulator and device. The speaker advised being mindful of battery life and leveraging the Tizen frameworks and pairing mode for performance.

1. .NET Everywhere!
Building Applications on the Tizen Platform

2. ● Software Architect
● Bootcamp Instructor
● Blogger and Speaker
● https://espressocoder.com
● PASSIONATE DEVELOPER!
About the Speaker
@jasontrobert

4. Roadmap
● The Landscape
● The Tizen Operating System
● The Frameworks
● The Architecture
● The Tooling
● DEMO!

5. The Landscape

7. Internet of Things

8. Wearable Technology

9. Familiar
Development
Tools
New
Technologies
& Devices

10. The Tizen OS

11. Tizen Operating System
● Open Source Operating System
○ A part of the Linux Foundation
● Used in many Samsung devices
● Built ground up for the mobile and
connected ecosystem
● Comes in multiple profiles
○ Mobile
○ TV
○ Wearable

12. So Many Devices to Choose From!

13. Today we will be focusing on... SMART WATCHES!

14. Circular UI
● Unique circular form factor leads
● Swiping can be difficult while
running or with gloves
● The rotating bezel allows simple
navigation on large datasets

15. Types of Applications
● Watch Apps can be built to take
advantage of a number of sensors or
execute custom business logic
● Applications can be uploaded to the
Galaxy Store
● “In-App Purchase” service for selling
premium digital content

16. Types of Applications
● Widgets can be developed to display
activities and information in an accessible
manner
● There are three key types of widgets
○ Informative - Delivers info from the
parent application
○ Interactive - Receives user feedback
○ Shortcut - Links to key areas of the app

17. Types of Applications
● Custom watch faces can be developed
to provide “complications” with addl info
● These applications are always running
once enabled
● Information from internal sensors can be
displayed (Heart Rate, GPS, Altitude)
● Data from external APIs can also be
exposed (Weather, News, Notifications)

18. Service
Applications
Centralized Background Processing
● No user interface
● Helpful for getting sensor data in
the background
● Can distribute data to multiple
applications
● Packaged / deployed with other
applications

19. The Frameworks

20. Web Native .NET Core
Built with web-native languages
(HTML, CSS, Javascript)
Utilizes the Tizen Web Framework
Can interact with native subsystems
Developed in C
Can access lower level features
More fine grained device control
TizenFX allows direct communication
with native features
User Interfaces are built with
Xamarin.Forms
Common libraries and components
can be shared with .NET Standard

21. .NET CORE!
● Initially released in June 2016
● Runs on Windows, Linux, and MacOS
● Free and Open Source !
● Modular
● Libraries can be shared across platforms by
targeting the .NET Standard Specification

22. Xamarin
● Development platform for building native, cross-
platform mobile apps
● Acquired by Microsoft in 2016
● Targets Android, iOS, tvOS, watchOS, macOS,
and Windows
● Allows development teams to share significant
amounts of code across platforms
● Support for wearables!

23. The Architecture

24. Linux Kernel and Device Drivers
.NET Core Tizen Core Framework
.NET Standard
.NET Core Runtime
Application Framework
Network Security Social System Telephony Connect UI
Base Content Location Messaging Media
Xamarin Forms Tizen FX API
Application Code
Layered Diagram

25. Tizen FX
Native Functionality in a Familiar
Framework
● Distributed via Nuget
● Thin wrapper over native Tizen
● Access to platform specific
functionality
○ Sensors, System Info, Battery, etc

26. The Tools

27. Device Emulator
● Fully functional, cross-platform
wearable emulator
● Images with various OS versions
can be downloaded and tested
● Sensors and events can be simulated
● Simple deployments
● More convenient than testing on a
physical device

28. Device Manager
● Allows the management of connected
devices and emulators
● Can view system / app logs and
interact with the file system
● Compiled application packages (TPK)
can be installed
● Packages and SDKs can be
downloaded

29. ● Samsung provides a Visual Studio extension
which integrates the Tizen SDK directly
into Visual Studio
● Apps can be built, deployed, and debugged
from Visual Studio
● New project templates allow all types of
Tizen projects to be created
● An integrated log viewer is helpful while
debugging
Visual Studio Tools for Tizen

30. Stop Talking and Show Us
Something!

31. Heart Rate Monitor App

32. Privacy Privilege Manager

33. Heart Rate Monitor

34. Watchface App

35. ViewModel (MVVM)

36. Recap
● Reviewed the Tizen OS
● Discussed different types of watch
applications
● Created a Heart Rate Monitor
Watchface & Watch App
● Deployed to an Emulator and Live
Device

37. All with...

38. QUESTIONS?

39. A few words of advice
● Be mindful of battery life
○ Excessive hardware interactions, such as Heart Rate and GPS, can cause battery drain
● Leverage ‘Pairing Mode’ whenever possible to take advantage of additional
processing power
● Stay within the bounds of the framework… C# / .NET Core is a powerful language
● Be CREATIVE!