Anko͸؁ͯ͘ඒຯ͍͠ ʙAnkoʹݟΔKotlinͷදݱྗʙ 
ΤϜεϦʔ
Y
(VOPTZ
#FFS
CBTIʂ
HVOPTZCFFS

 ௕ᖒ
ଠ࿠
!OHTX@UBSP 

ࣗݾ঺հ w ௕ᖒ
ଠ࿠
!OHTX@UBSP
w "OESPJEΤϯδχΞ
w ,PUMJOΤϰΝϯδΣϦετ
ࣗশ
w ࡀɺֈ࠲ɺͱ͕େ޷͖ 

Kotlinͱ͸ w +FU#SBJOT։ൃͷ+7.ݴޠ
w "OESPJE΋αϙʔτ
w ೥ൃදɺ·ͩϕʔλ൛
w "OESPJE
+BWB͔Β,PUMJO৐Γ׵͑ϫϯνϟϯ
w ࠷ۙɺ঺հهࣄ͕ཚཱͯ͠ΔͷͰͦͪΒࢀর 

Ankoͱ͸ w ,PUMJOͰهड़͞Εͨ"OESPJEϥΠϒϥϦ
w +FU#SBJOT։ൃʢઆಘྗɾ҆৺ײ͕͋Δʣ
w ओʹ6*Λ૊ΈཱͯΔ%4- 

UIΛ૊ΈཱͯΔDSL w جຊతʹ"OESPJEͰ͸9.-Ͱ6*Λදݱ͢Δ
w ࠶ར༻ੑɺ҆શੑɺύϑΥʔϚϯεͷ໘Ͱෆར
w ͱ͸͍͑ίʔυͰ໋ྩతʹ6*Λߏங͢Δͷμα Πʢ4XJOHΈ͍ͨͳΠϝʔδʣ
w %4-Ͱએݴతʹ6*Λߏங͢Δ
 ʢ+BWB'9
4DSJQUΈ͍ͨͳΠϝʔδʣ 

ඪ४APIͰΰϦΰϦ΍Δ val act = this! val layout = LinearLayout(act)! layout.orientation = LinearLayout.VERTICAL! val name = EditText(act)! val button = Button(act)! button.text = "Say Hello"! button.setOnClickListener {! Toast.makeText(act,! "Hello, ${name.text}!”,! Toast.LENGTH_SHORT).show()! }! layout.addView(name)! layout.addView(button) 

AnkoͰDSL verticalLayout {! val name = editText()! button("Say Hello") {! onClick {! toast("Hello, ${name.text}!”)! }! }! } 

Ͳ͏ಈ͍͍ͯΔͷ͔ There is no . 

ϥϜμࣜ Lambda Expression 

ߴ֊ؔ਺ͱϥϜμࣜ // Ҿ਺ʹAΛऔͬͯBΛฦؔ͢਺fΛҾ਺ʹऔΔؔ਺! fun convert(target: A,! f: (A)->B) = f(target)! ! convert(1, { x: Int -> x * 2 }) //=> 2! convert(2, { x -> x * 2}) //=> 4! convert(3, { it * 2 }) //=> 6! convert(4) { it * 2 } //=> 8 

֦ுؔ਺ Extension Function 

֦ுؔ਺ fun String.hello() = “Hello, $this”! ! “world”.hello() //=> “Hello, world” 

֦ுؔ਺ × ϥϜμࣜ fun A.convert(f: (A)->B) = f(this)! ! 3.convert({ x: Int -> x * 2}) //=> 6! 3 convert { it * 2 } //=> 6 

Anko class MainActivity : Activity() {! override fun onCreate(savedInstanceState: Bundle?) {! super.onCreate(savedInstanceState)! ! verticalLayout {! val name = editText()! button("Say Hello") {! onClick { toast("Hello, ${name.text}!") }! }! }! }! } 

Anko class MainActivity : Activity() {! override fun onCreate(savedInstanceState: Bundle?) {! super.onCreate(savedInstanceState)! ! verticalLayout {! val name = editText()! button("Say Hello") {! onClick { toast("Hello, ${name.text}!") }! }! }! }! } "DUJWJUZͷ֦ுؔ਺
UIJT͕লུ͞ΕͯΔ 

Anko class MainActivity : Activity() {! override fun onCreate(savedInstanceState: Bundle?) {! super.onCreate(savedInstanceState)! ! verticalLayout {! val name = editText()! button("Say Hello") {! onClick { toast("Hello, ${name.text}!") }! }! }! }! } ͜ͷUIJT͸
WFSUJDBM-BZPVU 

Anko class MainActivity : Activity() {! override fun onCreate(savedInstanceState: Bundle?) {! super.onCreate(savedInstanceState)! ! this.verticalLayout {! val name = this.editText()! this.button(“Say Hello") {! onClick { toast("Hello, ${name.text}!") }! }! }! }! } UIJT͕ผͷ΋ͷΛࢦ͢
Կނ͔ʁ 

֦ுؔ਺ΛҾ਺ʹऔΔߴ֊ؔ਺ class Builder { fun foo() {} }! ! fun build(f: Builder.() -> Unit) {! Builder().f()! }! ! build {! foo()! } 

Կ͕خ͍͠ͷ͔ verticalLayout {! button(“foo”)! verticalLayout {! button(“bar”)! verticalLayout {! button(“baz”)! }! }! } 

Կ͕خ͍͠ͷ͔ verticalLayout {! button(“foo”)! verticalLayout {! button(“bar”)! verticalLayout {! button(“baz”)! }! }! } ֊૚ߏ଄ΛදݱͰ͖Δ ϝιουͷείʔϓ ΛߜΕΔ ܕ҆શ
OVMM҆શ 

XMLͰฤू͢Δͱ ը໘ϓϨϏϡʔ ݟΕΔ͡ΌΜʁ 

No content

ͦΕɺAnkoͰ΋ Ͱ͖·͢ʂ 

No content

࢖Θͳ͍ख͸ͳ͍ 

͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠