Kotlin for Android

Presented in GDG DevFest Istanbul 2016, GDG DevFest Izmir 2016, HackNBreak 2017

Introducing Kotlin for Android

- Basic Syntax
- Classes and Inheritance
- Null-safety
- Extension Functions
- Higher-order Functions
- Anko DSL

Transcript

1. Kotlin for Android Semih Bozdemir sembozdemir@gmail.com semih.bozdemir@monitise.com medium.com/@sembozdemir
2. Kotlin • Programming language for JVM • Made by JetBrains • Open-source
3. Why Kotlin? • Compiles to JVM bytecode • Comes from industry • Costs nothing to adopt (One-click Java to Kotlin converter) • Easy to learn • Big community • Readable syntax
4. Basic Syntax • Functions
5. Basic Syntax • Functions
6. Basic Syntax • Local variables(read-only)
7. Basic Syntax • Local variables(read-only)
8. Basic Syntax • Local variables(read-only)
9. Basic Syntax • Local variables(mutable)
10. Basic Syntax • String templates
11. Basic Syntax • For Loops
12. Basic Syntax • For Loops
13. Basic Syntax • Ranges
14. Basic Syntax • Type checks and automatic cast
15. Basic Syntax • When Operator
16. Basic Syntax • When Operator
17. Basic Syntax • When Operator
18. Basic Syntax • When Operator
19. Basic Syntax • When Operator
20. Classes and Inheritance • Constructors
21. Classes and Inheritance • Constructors
22. Classes and Inheritance • Constructors
23. Classes and Inheritance • Constructors
24. Classes and Inheritance • Constructors
25. Classes and Inheritance • Creating instance
26. Classes and Inheritance • Creating instance
27. Classes and Inheritance • Creating instance
28. Classes and Inheritance • Inheritance
29. Classes and Inheritance • Inheritance
30. Classes and Inheritance • Inheritance
31. Classes and Inheritance • Inheritance
32. Classes and Inheritance • Inheritance
33. Classes and Inheritance • Getters and setters
34. Classes and Inheritance • Data classes
35. Classes and Inheritance • Object declarations
36. Classes and Inheritance • Companion object
37. Classes and Inheritance • Companion object
38. Null Safety
39. Null Safety
40. Null Safety
41. Null Safety
42. Null Safety
43. Null Safety
44. Extension Functions
45. Extension Functions
46. Extension Functions
47. Higher-Order Functions
48. Higher-Order Functions
49. Higher-Order Functions
50. Higher-Order Functions
51. Higher-Order Functions
52. Higher-Order Functions
53. Higher-Order Functions
54. Higher-Order Functions
55. Higher-Order Functions
56. Higher-Order Functions
57. Higher-Order Functions
58. Higher-Order Functions
59. Higher-Order Functions
60. Anko
61. “Let’s code ${kotlin}” bit.ly/todokotlin
62. Resources • Documentation https://kotlinlang.org/docs/reference/ • Kotlin Koans https://try.kotlinlang.org/koans • Learn Kotlin with Keddit https://medium.com/@juanchosaravia/learn-kotlin-while-developing-an-android- app-introduction-567e21ff9664#.2fia7o2zg • Getting started with Android with Kotlin https://kotlinlang.org/docs/tutorials/kotlin-android.html