scala, android & ble - scala meetup dublin - hands on code walkthrough

Scala, Android & BLEScala Meetup

DublinJul 2014

roland@tritsch.org

Because ...

Today ...

● How to build something?

● Framework(s)!

● BLE :)

Build environments ...

● Gradle○ gradle-android-scala-plugin (saturday06)

● SBT○ android-plugin (jberkel)○ android-sdk-plugin(pfn) !!!

How to startFirst Scala App

Hello World

Tutorial One

https://github.com/rolandtritsch

scala-android-meetup

Frameworks ...

● Macroid○ UI “only”○ UI even nicer than Scaloid

● Scaloid○ UI and “other” Scala-idiomatics○ “Better/more” documentation

HelloWorld with Macroid & Scaloid

Tutorial Two

https://github.com/rolandtritsch

scaloid-hello-world

BLE ...

● Bluetooth Low Energy● RFID vs. BLE (vs. iBeacon :))● Requires at least Android 4.3

○ And even then …● Alternatives …

○ LocalSocial, Gimbal, RadiusNetworks, Estimote, ...

A simple BLE scanner

Tutorial Three

https://github.com/rolandtritsch

scaloid-beacon-scanner

References

● https://github.com/pfn/android-sdk-plugin● https://github.com/pocorall/scaloid● https://github.com/macroid

● https://github.com/ensime● https://github.com/rolandtritsch

○ scala-android-weatherstation

Q&A

Quiz

● Log.wtf(s”This should not happen”)● “Hello, world!”, “hello world”, “hello, world!”● Max length of Android Logging Tag

○ log.tag.<TAG> needs to be <= 32, because you want to be able to use …■ adb shell setprop log.tag.<TAG> <LOGLEVEL>