A quick overview of some of the existing hybrid app platforms. Then a deeper look into Go and gomobile on iOS and Android.

1. What’s New in Hybrid App Development

2. Jay Graves - CTO POSSIBLE Mobile
@skabber

3. Native Apps Are the Best!
SO WHY ARE WE TALKING ABOUT HYBRID?
• Times Change
• Technology moves forward

4. 3 Classes of Hybrid App Platoforms
• The Wrapper
• Any Other Language
• Shared Code

5. What is not new?
BUT STILL AROUND AND GETTING UPDATES
• Phone Gap
• Ruby Motion
• Xamarin

6. PhoneGap
OR IS IT CORDOVA?
• Wrapper App
• HTML 5, JavaScript, CSS
• iOS, Android, Fire, Blackeberry 10, Firefox OS
• Ubuntu, Windows Phone 8, Tizen
• Adobe & Apache License

7. PhoneGap
“I think a big reason why PhoneGap was created is that we
wanted to get back to building web apps and using HTML, CSS
and JavaScript and not get locked in to a proprietary vendor
platform.”

8. Ruby Motion
• Any Other Language
• Ruby (obviously)
• iOS, Android, OS X
• Can use 3rd party frameworks on both platforms
• $16.5 a month, $29 a month, Enterprise

9. Ruby Motion
HOW DOES IT WORK?

10. Xamarin
800LB GORILLA
• Any Other Language
• C#
• iOS, Android, OS X, Windows Phone
• 3rd party frameworks must be specially wrapped
“components”.
• $25 a month, $83 a month or $158 a month, per
developer per platform!

11. Xamarin
COMPONENTS

12. Xamarin Studio
IDE

13. Xamarin Visual Studio
MICROSOFT

14. Xamarin.iOS Build Host
BUILD ON OS X FROM WINDOWS

15. Xamarin Test Cloud
DEVICES

16. Xamarin Insights
ANALYTICS

17. Xamarin University
E-LEARNING

18. What is new?
NKOTB
• Silver
• Apportable Tengu
• Go

19. Silver
FROM REM OBJECTS
• Any Other Language
• Swift 1.2
• iOS, Android, Windows
• 3rd party frameworks …. ?
• Free, $799, $4999

20. Silver
FIRE IDE

21. Silver
FIRE IDE

22. Silver
OXIDIZER - CODE CONVERTER

23. Silver
CODE CONVERTER

24. Apportable Tengu
BETA
• Any Other Language / Shared Code
• Swift, Obj-C, Java - Android only
• iOS, Android
• 3rd Party Frameworks …?
• Pricing $?

25. Apportable Tengu
HOW DOES IT WORK?

26. Go

27. Go
1.5 RELEASE CANDIDATE
• Shared Code / Any Other Language
• Go (obviously)
• iOS, Android, OS X, Windows, Linux
• 3rd Party Frameworks - Yes
• Free

28. Go 1.5
HOW DOES IT WORK?
• Cross compilation
• Example: compiling for arm from amd64
• gomobile tool

29. gomobile
THIS IS WHERE WHERE THE MAGIC HAPPENS
go get golang.org/x/mobile/cmd/gomobile
Commands:
bind build a shared library for android APK and iOS app
build compile android APK and iOS app
init install android compiler toolchain
install compile android APK and install on device
version print version

30. gomobile
BUILD VS. BIND
• Your package must have a main function.
• Very limited “App” functionality.
• OpenGL, Audio, Sprites.
• No native UI.
• Not very useful at this point.
gomobile build -target=[ios | android ]

31. gomobile
BUILD VS. BIND
• Your package must not have a function.
• Android outputs an .aar archive.
• Wraps Java Native Interface (JNI).
• iOS outputs a .framework.
• Complete with Obj-C header files.
gomobile bind -target=[ios | android ]

32. Go / iOS Example
PUTTING IT TOGETHER

33. Go / iOS Example
PUTTING IT TOGETHER

34. Go / iOS Example
HEADER FILE

35. Go / iOS Example
CALLING FROM SWIFT

36. Go / Android Example
PROJECT & AAR

37. Go / Android Example
IMPORTS

38. Go / Android Example
CALLING FROM JAVA

39. Go Standard Library
WHAT CAN YOU DO WITH GO?

40. Go Standard Library
MY GOD, IT’S FULL OF STARS
runtime
unicode/utf8
io
strings
crypto
html
time
image os
zip
sql
csv
json
xml mime
rand
template
mail
tls
http
testing
url

41. Go
DOWNSIDES
• Very early days.
• Only a subset of Go types are supported.
• int, float, string, bool
• functions, interfaces, structs
• Work in progress
• Debugging.
• Tooling
• Bitcode?
•

42. Questions?
Jay Graves - CTO POSSIBLE Mobile
@skabber