This document discusses using Groovy on Android applications. It begins with an introduction to Groovy, describing it as an open source language that compiles to Java bytecode and has a syntax similar to Java but with features inspired by Python, Ruby, and Smalltalk. The document then notes some similarities between Groovy and Apple's Swift language, before discussing how Groovy can be used on Android by compiling Groovy code to Java bytecode and calling it from Android applications.

1. Groovy on Android
9 oct 2014

2. Agenda
1. What is Groovy?
2. Swift and Groovy
3. Groovy on Android

3. Agenda
1. What is Groovy?
2. Swift and Groovy
3. Groovy on Android

4. What Apple think

5. After Swift release
• Ruby devs: Swift looks like Ruby
• Groovy devs: Swift looks like Groovy
• C# devs: Swift looks like C#
• Java devs: WTH is a closure?

6. Groovy
• Started in August 2003 (release 1.0 on January 2,
2007)
• Open Source (BSD/Apache licenses)
• Compiled to Java Bytecode
• Grammar similar to Java with inspiration from
Python, Ruby and Smalltalk
• Extremely flat learning curve for the Java developers

7. Groovy
Java

8. Groovy features
• Annotations for AST Transformation
(@InheritConstructors,@Singleton,
@EqualsAndHashCode)
• Closure
• Metaprogramming (adding method to a class on
the fly)
• Native JSON support

9. Groovy features
• ?. and *. operators
• Native support for Lists, Maps and Regular
Expressions
• String interpolation
• Static and Dynamic typing

10. Groovy features
• ?. and *. operators
• Native support for Lists, Maps and Regular
Expressions
• String interpolation
• Static and Dynamic typing

11. Agenda
1. What is Groovy?
2. Swift and Groovy
3. Groovy on Android

12. Groovy and Swift

13. Groovy and Swift

14. Groovy and Swift

15. Groovy and Swift

16. Groovy and Swift

17. Groovy and Swift

18. Groovy and Swift

19. Agenda
1. What is Groovy?
2. Swift and Groovy
3. Groovy on Android

20. Let’s code!

21. Q & A