Anko試食会

5.  

13. <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/ apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="jp.watanave.ankosamples.XMLActivity"> <EditText android:layout_width="match_parent" android:layout_height="wrap_content" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="SAY hello"/> </LinearLayout>

14. verticalLayout { editText() button("Say Hello") }

15. <LinearLayout xmlns:android="http://schemas.android.com/ apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="jp.watanave.ankosamples.XMLActivity"> <EditText android:layout_width="match_parent" android:layout_height="wrap_content" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="SAY hello"/> </LinearLayout> verticalLayout { editText() button("Say Hello") }

16. <LinearLayout > <EditText/> <Button/> </LinearLayout> verticalLayout { editText() button("Say Hello") }

20. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal" android:background="@android:color/darker_gray" tools:context="jp.watanave.ankosamples.XMLActivity"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/red" android:textColor="#FF0000"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/white" android:textColor="#FFFFFF"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/yellow" android:textColor="#FFFB00"/> </LinearLayout>

21. linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } textView { text = " " textColor = Color.WHITE } textView { text = " " textColor = Color.YELLOW } }

22. linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } textView { text = " " textColor = Color.WHITE } textView { text = " " textColor = Color.YELLOW } } linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } textView { text = " " textColor = Color.WHITE } textView { text = " " textColor = Color.YELLOW } }

24. linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } textView { text = " " textColor = Color.WHITE } textView { text = " " textColor = Color.YELLOW } } linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } textView { text = " " textColor = Color.WHITE } textView { text = " " textColor = Color.YELLOW } } linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED }

25. linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } }

26. linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } }

29. linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } textView { text = " " textColor = Color.WHITE } textView { text = " " textColor = Color.YELLOW } } linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } textView { text = " " textColor = Color.WHITE } textView { text = " " textColor = Color.YELLOW } } textView { text = “ " textColor = Color.RED }

30. textView { text = “ " textColor = Color.RED }

31. view { = }

33. linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED }.lparams { margin = dip(10) } textView { text = " " textColor = Color.WHITE }.lparams { margin = dip(10) } textView { text = " " textColor = Color.YELLOW }.lparams { margin = dip(10) } }

34. linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED }.lparams { margin = dip(10) } textView { text = " " textColor = Color.WHITE }.lparams { margin = dip(10) } textView { text = " " textColor = Color.YELLOW }.lparams { margin = dip(10) } } linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED }.lparams { margin = dip(10) } textView { text = " " textColor = Color.WHITE }.lparams { margin = dip(10) } textView { text = " " textColor = Color.YELLOW }.lparams { margin = dip(10) } }

35. linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED }.lparams { margin = dip(10) } textView { text = " " textColor = Color.WHITE }.lparams { margin = dip(10) } textView { text = " " textColor = Color.YELLOW }.lparams { margin = dip(10) } } linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED }.lparams { margin = dip(10) } textView { text = " " textColor = Color.WHITE }.lparams { margin = dip(10) } textView { text = " " textColor = Color.YELLOW }.lparams { margin = dip(10) } }

36. linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED }.lparams { margin = dip(10) } textView { text = " " textColor = Color.WHITE }.lparams { margin = dip(10) } textView { text = " " textColor = Color.YELLOW }.lparams { margin = dip(10) } } linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED }.lparams { margin = dip(10) } textView { text = " " textColor = Color.WHITE }.lparams { margin = dip(10) } textView { text = " " textColor = Color.YELLOW }.lparams { margin = dip(10) } } textView { text = " " textColor = Color.RED }.lparams { margin = dip(10) }

37. textView { text = " " textColor = Color.RED }.lparams { margin = dip(10) }

38. view { }.lparams { LayoutParams = }

39. interface AnkoComponent<in T> { fun createView(ui: AnkoContext<T>): View }

40. class MyActivity : AppCompatActivity() { // }

41. class MyActivity : AppCompatActivity() { // } class MyActivityUI : AnkoComponent<MyActivity> { }

42. class MyActivity : AppCompatActivity() { // } class MyActivityUI : AnkoComponent<MyActivity> { } class MyActivity : AppCompatActivity() { // } class MyActivityUI : AnkoComponent<MyActivity> { }

43. class MyActivity : AppCompatActivity() { // } class MyActivityUI : AnkoComponent<MyActivity> { override fun createView(ui: AnkoContext<MyActivity>): View { // DSL } }

44. class MyActivity : AppCompatActivity() { // } class MyActivityUI : AnkoComponent<MyActivity> { override fun createView(ui: AnkoContext<MyActivity>): View { // DSL } } class MyActivity : AppCompatActivity() { // } class MyActivityUI : AnkoComponent<MyActivity> { override fun createView(ui: AnkoContext<MyActivity>): View { // DSL } }

45. class MyActivity : AppCompatActivity() { // } class MyActivityUI : AnkoComponent<MyActivity> { override fun createView(ui: AnkoContext<MyActivity>): View { // DSL } }

46. class MyActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) } } class MyActivityUI : AnkoComponent<MyActivity> { override fun createView(ui: AnkoContext<MyActivity>): View { // DSL } }

47. class MyActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) } } class MyActivityUI : AnkoComponent<MyActivity> { override fun createView(ui: AnkoContext<MyActivity>): View { // DSL } }

48. class MyActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) MyActivityUI().setContentView(this) } } class MyActivityUI : AnkoComponent<MyActivity> { override fun createView(ui: AnkoContext<MyActivity>): View { // DSL } }

49. class MyActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) MyActivityUI().setContentView(this) } } class MyActivityUI : AnkoComponent<MyActivity> { override fun createView(ui: AnkoContext<MyActivity>): View { // DSL } } class MyActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) MyActivityUI().setContentView(this) } } class MyActivityUI : AnkoComponent<MyActivity> { override fun createView(ui: AnkoContext<MyActivity>): View { // DSL } }

66. & ' ( ) *

71. ( ) ->

72. val lambda:( ) -> = { -> // doSomething } val result = lambda(arg)

73. val lambda : (String)->Int = { str -> val count = str.count() count // } val result = lambda(“DroidKaigi2018") // 14 ( ) ->

74. val lambda : (String)->Int = { str -> val count = str.count() count // } val result = lambda(“DroidKaigi2018") // 14

77. val array = (0..10) array.forEach({ num -> print(num) })

79. val array = (0..10) array.forEach({ num -> print(num) })

80. val array = (0..10) array.forEach( print(num) }) ({ num ->

81. val array = (0..10) array.forEach( print(num) } )( { num ->

82. val array = (0..10) array.forEach() { num -> print(num) }

86. val array = (0..10) array.forEach() { num -> print(num) } val array = (0..10) array.forEach() { num -> print(num) }

87. val array = (0..10) array.forEach { num -> print(num) }

88. array.forEach { num -> print(num) }

89. array.forEach { num -> print(num) } linearLayout { // doSomething } "

90. linearLayout { // doSomething } linearLayout

93. this

94. class MyClass { fun createTextView() : TextView { return TextView(context) } }

95. class MyClass { fun createTextView(argLambda: ()->Unit) : TextView { return TextView(context) } }

96. class MyClass { fun createTextView(argLambda: ()->Unit) : TextView { return TextView(context) } fun doSomething() { createTextView ({ // do something }) } }

97. class MyClass { fun createTextView(argLambda: ()->Unit) : TextView { return TextView(context) } fun doSomething() { createTextView ({ // do something }) } } class MyClass { fun createTextView(argLambda: ()->Unit) : TextView { return TextView(context) } fun doSomething() { createTextView ({ // do something }) } }

98. class MyClass { fun createTextView(argLambda: (TextView)->Unit) : TextView { return TextView(context) } fun doSomething() { createTextView { // do something } } }

99. class MyClass { fun createTextView(argLambda: (TextView)->Unit) : TextView { val view = TextView(context) argLambda(view) return view } fun doSomething() { createTextView { // do something } } }

100. class MyClass { fun createTextView(argLambda: (TextView)->Unit) : TextView { val view = TextView(context) argLambda(view) return view } fun doSomething() { createTextView { textView -> textView.text = " " } } }

103. class MyClass { fun createTextView(argLambda: (TextView)->Unit) : TextView { val view = TextView(context) argLambda(view) return view } fun doSomething() { createTextView { textView -> textView.text = " " } } } createTextView { textView -> textView.text = “ " }

104. createTextView { textView -> textView.text = " " } textView { text = " " }

105. createTextView { textView -> textView.text = " " } textView { this.text = " " this is TextView // true }

106. fun createTextView(argLambda: (TextView)->Unit) : TextView { val view = TextView(context) argLambda(view) return view }

108. .( ) -> ( ) -> +

109. this .( ) -> ( ) -> +

110. fun createTextView(argLambda: (TextView)->Unit) : TextView { val view = TextView(context) argLambda(view) return view } .( ) -> ( ) -> +

113. fun createTextView(argLambda: TextView.()->Unit) : TextView { val view = TextView(context) argLambda(view) return view } .( ) -> ( ) -> +

114. fun createTextView(argLambda: TextView.()->Unit) : TextView { val view = TextView(context) view.argLambda() return view }

115. class MyClass { fun createTextView(argLambda: TextView.()->Unit) : TextView { val view = TextView(context) view.argLambda() return view } fun doSomething() { createTextView { text = " " this is TextView // true } } }

116. class MyClass { fun createTextView(argLambda: TextView.()->Unit) : TextView { val view = TextView(context) view.argLambda() return view } fun doSomething() { createTextView { text = " " this is TextView // true } } } class MyClass { fun createTextView(argLambda: TextView.()->Unit) : TextView { val view = TextView(context) view.argLambda() return view } fun doSomething() { createTextView { text = " " this is TextView // true } } }

120. + fun lparams() { // do something } + fun TextView.lparams() { // do something }

121. class MyClass { fun createTextView(argLambda: TextView.()->Unit) : TextView { val view = TextView(context) view.argLambda() return view } fun doSomething() { val textView = createTextView { text = " " } textView.lparams() } } class MyClass { fun TextView.lparams() { this is TextView // true } fun createTextView(argLambda: TextView.()->Unit) : TextView { val view = TextView(context) view.argLambda() return view } fun doSomething() { val textView = createTextView { text = " " } textView.lparams() } }

122. class MyClass { fun createTextView(argLambda: TextView.()->Unit) : TextView { val view = TextView(context) view.argLambda() return view } fun doSomething() { val textView = createTextView { text = " " } textView.lparams() } } class MyClass { fun TextView.lparams() { this is TextView // true } fun createTextView(argLambda: TextView.()->Unit) : TextView { val view = TextView(context) view.argLambda() return view } fun doSomething() { val textView = createTextView { text = " " } textView.lparams() } }

123. class MyClass { fun createTextView(argLambda: TextView.()->Unit) : TextView { val view = TextView(context) view.argLambda() return view } fun doSomething() { val textView = createTextView { text = " " } textView.lparams() } } class MyClass { fun TextView.lparams() { // do something } fun createTextView(argLambda: TextView.()->Unit) : TextView { val view = TextView(context) view.argLambda() return view } fun doSomething() { val textView = createTextView { text = " " } textView.lparams() } }

124. class MyClass { fun createTextView(argLambda: TextView.()->Unit) : TextView { val view = TextView(context) view.argLambda() return view } fun doSomething() { val textView = createTextView { text = " " } textView.lparams() } } class MyClass { fun TextView.lparams() { // do something } fun createTextView(argLambda: TextView.()->Unit) : TextView { val view = TextView(context) view.argLambda() return view } fun doSomething() { val textView = createTextView { text = " " } textView.lparams() } } class MyClass { fun TextView.lparams() { // do something } fun createTextView(argLambda: TextView.()->Unit) : TextView { val view = TextView(context) view.argLambda() return view } fun doSomething() { val textView = createTextView { text = " " } textView.lparams() } }

128. override fun createView(ui: AnkoContext<MyActivity>): View = with(ui) { linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } textView { text = " " textColor = Color.WHITE } textView { text = " " textColor = Color.YELLOW } } }

129. override fun createView(ui: AnkoContext<MyActivity>): View = with(ui) { linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } textView { text = " " textColor = Color.WHITE } textView { text = " " textColor = Color.YELLOW } } } override fun createView(ui: AnkoContext<MyActivity>): View linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } textView { text = " " textColor = Color.WHITE } textView { text = " " textColor = Color.YELLOW } } }

130. override fun createView(ui: AnkoContext<MyActivity>): View = with(ui) { linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } textView { text = " " textColor = Color.WHITE } textView { text = " " textColor = Color.YELLOW } } }

131. override fun createView(ui: AnkoContext<MyActivity>): View = with(ui) { linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } textView { text = " " textColor = Color.WHITE } textView { text = " " textColor = Color.YELLOW } } } override fun createView(ui: AnkoContext<MyActivity>): View = with(ui) { linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } textView { text = " " textColor = Color.WHITE } textView { text = " " textColor = Color.YELLOW } } }

132. inline fun <T, R> with(receiver: T, block: T.() -> R): R (source)

133. inline fun <T, R> with(receiver: T, block: T.() -> R): R (source)

134. override fun createView(ui: AnkoContext<MainActivity>): View = with(ui) { linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } textView { text = " " textColor = Color.WHITE } textView { text = " " textColor = Color.YELLOW } } }

135. override fun createView(ui: AnkoContext<MainActivity>): View = with(ui) { return ui.linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } textView { text = " " textColor = Color.WHITE } textView { text = " " textColor = Color.YELLOW } } }

136. inline fun AnkoContext<*>.linearLayout(init: LinearLayout.() -> Unit): _LinearLayout { val context = this.ctx val view = LinearLayout(context) view.init() (context as Activity).setContentView(view) return view } override fun createView(ui: AnkoContext<MainActivity>): View = with(ui) { linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } // } }

141. inline fun AnkoContext<*>.linearLayout(init: LinearLayout.() -> Unit): _LinearLayout { val context = this.ctx val view = LinearLayout(context) view.init() (context as Activity).setContentView(view) return view } override fun createView(ui: AnkoContext<MainActivity>): View = with(ui) { linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } // } } .( ) ->

142. inline fun AnkoContext<*>.linearLayout(init: LinearLayout.() -> Unit): _LinearLayout { val context = this.ctx val view = LinearLayout(context) view.init() (context as Activity).setContentView(view) return view } override fun createView(ui: AnkoContext<MainActivity>): View = with(ui) { linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } // } } .( ) ->

146. inline fun AnkoContext<*>.linearLayout(init: LinearLayout.() -> Unit): _LinearLayout { val context = this.ctx val view = LinearLayout(context) view.init() (context as Activity).setContentView(view) return view } override fun createView(ui: AnkoContext<MainActivity>): View = with(ui) { linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED } // } } inline fun AnkoContext<*>.linearLayout(init: LinearLayout.() -> Unit): _LinearLayout { val context = this.ctx val view = LinearLayout(context) view.init() (context as Activity).setContentView(view) return view }

147. _LinearLayout

150. class _LinearLayout(context: Context) : LinearLayout(context) { fun TextView.lparams(init: LinearLayout.LayoutParams.() -> Unit): TextView { val layoutParams = LinearLayout.LayoutParams(width, height) layoutParams.init() this.layoutParams = layoutParams return this } }

152. class _LinearLayout(context: Context) : LinearLayout(context) { fun TextView.lparams(init: LinearLayout.LayoutParams.() -> Unit): TextView { val layoutParams = LinearLayout.LayoutParams(width, height) layoutParams.init() this.layoutParams = layoutParams return this } } class _LinearLayout(context: Context) : LinearLayout(context) { fun TextView.lparams(init: LinearLayout.LayoutParams.() -> Unit): TextView { val layoutParams = LinearLayout.LayoutParams(width, height) layoutParams.init() this.layoutParams = layoutParams return this } }

154. class _LinearLayout(context: Context) : LinearLayout(context) { fun TextView.lparams(init: LinearLayout.LayoutParams.() -> Unit): TextView { val layoutParams = LinearLayout.LayoutParams(width, height) layoutParams.init() this.layoutParams = layoutParams return this } } class _LinearLayout(context: Context) : LinearLayout(context) { fun TextView.lparams(init: LinearLayout.LayoutParams.() -> Unit): TextView { val layoutParams = LinearLayout.LayoutParams(width, height) layoutParams.init() this.layoutParams = layoutParams return this } }

155. class _LinearLayout(context: Context) : LinearLayout(context) { fun TextView.lparams(init: LinearLayout.LayoutParams.() -> Unit): TextView { val layoutParams = LinearLayout.LayoutParams() layoutParams.init() this.layoutParams = layoutParams return this } }

158. class _LinearLayout(context: Context) : LinearLayout(context) { fun TextView.lparams(init: LinearLayout.LayoutParams.() -> Unit): TextView { val layoutParams = LinearLayout.LayoutParams() layoutParams.init() this.layoutParams = layoutParams return this } } class _LinearLayout(context: Context) : LinearLayout(context) { fun TextView.lparams(init: LinearLayout.LayoutParams.() -> Unit): TextView { val layoutParams = LinearLayout.LayoutParams() layoutParams.init() this.layoutParams = layoutParams return this } }

160. class _LinearLayout(context: Context) : LinearLayout(context) { fun TextView.lparams(init: LinearLayout.LayoutParams.() -> Unit): TextView { val layoutParams = LinearLayout.LayoutParams() layoutParams.init() this.layoutParams = layoutParams return this } } class _LinearLayout(context: Context) : LinearLayout(context) { fun TextView.lparams(init: LinearLayout.LayoutParams.() -> Unit): TextView { val layoutParams = LinearLayout.LayoutParams() layoutParams.init() this.layoutParams = layoutParams return this } }

161. class _FrameLayout(context: Context) : FrameLayout(context) { fun TextView.lparams(init: FrameLayout.LayoutParams.() -> Unit): TextView { class _RelativeLayout(context: Context) : RelativeLayout(context) { fun TextView.lparams(init: RelativeLayout.LayoutParams.() -> Unit): TextView { class _LinearLayout(context: Context) : LinearLayout(context) { fun TextView.lparams(init: LinearLayout.LayoutParams.() -> Unit): TextView {

162. class _FrameLayout(context: Context) : FrameLayout(context) { fun TextView.lparams(init: FrameLayout.LayoutParams.() -> Unit): TextView { class _RelativeLayout(context: Context) : RelativeLayout(context) { fun TextView.lparams(init: RelativeLayout.LayoutParams.() -> Unit): TextView { class _LinearLayout(context: Context) : LinearLayout(context) { fun TextView.lparams(init: LinearLayout.LayoutParams.() -> Unit): TextView { class _LinearLayout(context: Context) : LinearLayout(context) { fun TextView.lparams(init: LinearLayout.LayoutParams.() -> Unit): TextView { class _FrameLayout(context: Context) : FrameLayout(context) { fun TextView.lparams(init: FrameLayout.LayoutParams.() -> Unit): TextView { class _RelativeLayout(context: Context) : RelativeLayout(context) { fun TextView.lparams(init: RelativeLayout.LayoutParams.() -> Unit): TextView {

163. linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED }.lparams { weight = 1.0f // this LayoutParams , } // }

164. linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED }.lparams { weight = 1.0f } // }

165. linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED }.lparams { weight = 1.0f } // } linearLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED }.lparams { weight = 1.0f } // }

166. relativeLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED }.lparams { centerInParent() } // }

167. relativeLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED }.lparams { centerInParent() } // } relativeLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED }.lparams { centerInParent() } // }

168. relativeLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED }.lparams { centerInParent() } // } relativeLayout { backgroundColor = Color.DKGRAY textView { text = " " textColor = Color.RED }.lparams { centerInParent() } // } <TextView android:layout_centerInParent="true"/>

172. class MyActivityUI : AnkoComponent<MyActivity> { override fun createView(ui: AnkoContext<MyActivity>): View = with(ui) { verticalLayout { editText { id = View.generateViewId() } button("OK") { id = View.generateViewId() } } } }

173. class MyActivityUI : AnkoComponent<MyActivity> { override fun createView(ui: AnkoContext<MyActivity>): View = with(ui) { verticalLayout { editText { id = View.generateViewId() } button("OK") { id = View.generateViewId() } } } }

184. inline fun generateViewId(): Int = Throwable().stackTrace.first().lineNumber class MyActivityUI : AnkoComponent<MyActivity> { override fun createView(ui: AnkoContext<MyActivity>): View = with(ui) { verticalLayout { editText { id = generateViewId() } button("OK") { id = generateViewId() } } } } -renamesourcefileattribute SourceFile -keepattributes SourceFile,LineNumberTable

185. inline fun generateViewId(): Int = Throwable().stackTrace.first().lineNumber class MyActivityUI : AnkoComponent<MyActivity> { override fun createView(ui: AnkoContext<MyActivity>): View = with(ui) { verticalLayout { editText { id = generateViewId() } button("OK") { id = generateViewId() } } } } -renamesourcefileattribute SourceFile -keepattributes SourceFile,LineNumberTable

186. inline fun viewIdFromLineNumber(): Int = Throwable().stackTrace.first().lineNumber class MyActivityUI : AnkoComponent<MyActivity> { override fun createView(ui: AnkoContext<MyActivity>): View = with(ui) { verticalLayout { editText { id = viewIdFromLineNumber() } button("OK") { id = viewIdFromLineNumber() } } } } -renamesourcefileattribute SourceFile -keepattributes SourceFile,LineNumberTable

187. -

188. - linearLayout { (0..5).forEach { textView { id = viewIdFromLineNumber() } } }

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