KotlinConf'23: Automating UI Infrastructure in Jetpack Compose

@ VinayGaba KotlinConf’23 Amsterdam Automating UI Infrastructure in Jetpack Compose
    Vinay Gaba

🚀 Automating UI Infrastructure 🚀

2021 2019 2016 2013 2023

200k+   Github   Stars ⭐ 🚀

2021 2019 2016 2013 2023

fun MyCustomTextComponent(displayString: String) { }

fun MyCustomTextComponent(displayString: String) { Text( text = displayString, style =
TextStyle( fontWeight = FontWeight.W900, fontFamily = FontFamily.Monospace, fontSize = 32.sp, fontStyle = FontStyle.Italic, color = Color.Magenta, background = Color.Black ) ) }

@Composable fun MyCustomTextComponent(displayString: String) { Text( text = displayString, style
= TextStyle( fontWeight = FontWeight.W900, fontFamily = FontFamily.Monospace, fontSize = 32.sp, fontStyle = FontStyle.Italic, color = Color.Magenta, background = Color.Black ) ) }

Discoverability

Project Codename: Showkase

Requirements

🌎 All components from the codebase Requirements

🌎 All components from the codebase Requirements 🗂 Components are
neatly organized

🌎 All components from the codebase Requirements 🗂 Components are
neatly organized 🙅 No manual work

@Composable fun MyCustomTextComponent(displayString: String) { ... }

@Composable fun MyCustomTextComponent(displayString: String) { ... } @Preview(name = "MyCustomTextComponent",
group = "SectionHeader") @Composables funsMyCustomTextComponentPreview() { MyCustomTextComponent("KotlinConf 2023") }s

Revised Problem Statement: Collect all functions annotated with @Preview and
show them in a component browser

Kotlin Symbol Processing (KSP) https://kotlinlang.org/docs/ksp-overview.html

KSFile packageName: KSName fileName: String annotations: List<KSAnnotation> (File annotations) declarations:
List<KSDeclaration> KSClassDeclaration // class, interface, object simpleName: KSName qualifiedName: KSName containingFile: String typeParameters: KSTypeParameter parentDeclaration: KSDeclaration classKind: ClassKind primaryConstructor: KSFunctionDeclaration superTypes: List<KSTypeReference> // contains inner classes, member functions, properties, etc. declarations: List<KSDeclaration> KSFunctionDeclaration // top level function simpleName: KSName qualifiedName: KSName containingFile: String typeParameters: KSTypeParameter parentDeclaration: KSDeclaration functionKind: FunctionKind extensionReceiver: KSTypeReference? returnType: KSTypeReference parameters: List<KSValueParameter> // contains local classes, local functions, local variables, etc. declarations: List<KSDeclaration>

Component Name

Component Name Component Group

Component Name Component Group @Preview Function

data class ShowkaseBrowserComponent( val name: String, val group: String, val
component: @Composable () → Unit )

data class ShowkaseBrowserComponent( val name: String, val group: String, val
component: @Composable () → Unit ) interface ShowkaseProvider { fun componentList() : List<ShowkaseBrowserComponent> }

class GeneratedCode: ShowkaseProvider { override fun componentList(): List<ShowkaseBrowserComponent> { return
listOf( ShowkaseBrowserComponent( ... ), ShowkaseBrowserComponent( ... ), … ShowkaseBrowserComponent( ... ), ) } }

listOf( ShowkaseBrowserComponent( ... ), ShowkaseBrowserComponent( ... ), … ShowkaseBrowserComponent( ... ), ) } } Module 1

listOf( ShowkaseBrowserComponent( ... ), ShowkaseBrowserComponent( ... ), … ShowkaseBrowserComponent( ... ), ) } } Module 2 Module n . . . Module 1

Which module has all the dependencies?

@Retention(AnnotationRetention.SOURCE) @Target(AnnotationTarget.CLASS) annotation class ShowkaseRoot

@Retention(AnnotationRetention.SOURCE) @Target(AnnotationTarget.CLASS) annotation class ShowkaseRoot // Setup needed from the
user of this library @ShowkaseRoot class MyShowkaseRoot

Which module has all the dependencies?

Which module has all the dependencies? How can the root
module access previews from other modules?

module1 module2 module3 module4 module5

module1 module2 module3 module4 module5 > Task :module1:kspDebugKotlin

> Task :module1:kspDebugKotlin module1 module2 module3 module4 module5

> Task :module1:kspDebugKotlin > Task :module2:kspDebugKotlin module1 module2 module3 module4
module5

> Task :module1:kspDebugKotlin > Task :module2:kspDebugKotlin > Task :module3:kspDebugKotlin module1
module2 module3 module4 module5

Fixed package location com.airbnb.android.showkase module1 module2 module3 module4 module5

Fixed package location com.airbnb.android.showkase Metadata of previews from module 1
module1 module2 module3 module4 module5

module1 module2 module3 module4 module5 Metadata of previews from module 2

module1 module2 module3 module4 module5 Metadata of previews from module 2 Metadata of previews from module 3

com.airbnb.android.showkase

Fixed package location com.airbnb.showkase Metadata of previews from module 1
module1 module2 module3 module4 module5 Metadata of previews from module 2 Metadata of previews from module 3

Fixed package location com.airbnb.showkase Metadata of previews from module 1
module1 module2 module3 module4 module5 Metadata of previews from module 2 Metadata of previews from module 3 (Root Module)

Writing the Annotation Processor

class ShowkaseProcessor( val environment: SymbolProcessorEnvironment ) : SymbolProcessor { override
fun process(resolver: Resolver): List<KSAnnotated> { return emptyList() } }

Find Symbols with Annotation Validate Generate Code Use Generated Code

class ShowkaseProcessor( val environment: SymbolProcessorEnvironment ) : SymbolProcessor { override
fun process(resolver: Resolver): List<KSAnnotated> { // TODO: Step1 - Find elements with annotation return emptyList() } }

// Find all preview functions in the current module resolver.getSymbolsWithAnnotation("androidx.compose.ui.tooling.preview.Preview")

resolver.getSymbolsWithAnnotation("androidx.compose.ui.tooling.preview.Preview") .map { function -> }

@Preview( name = "ImageRow", group = "Rows" ) @Composable fun
ImageRowPreview() { ImageRow( ... ) } resolver.getSymbolsWithAnnotation( ... ) .map { function -> }

@Preview(...) @Composable fun ImageRowPreview() { ImageRow(...) } object MyPreviewsObject {
@Preview(...) @Composable fun ImageRowPreview() { ImageRow(...) } } class MyClass { @Preview(...) @Composable fun ImageRowPreview() { ImageRow(...) } } resolver.getSymbolsWithAnnotation( ... ) .map { function -> }

resolver.getSymbolsWithAnnotation("androidx.compose.ui.tooling.preview.Preview") .map { function -> val previewAnnotation = function.annotations.first {
it.shortName.asString() == "Preview" } }

it.shortName.asString() == "Preview" } val name = previewAnnotation.arguments.first { it.name.asString() == "name" }.value val group = previewAnnotation.arguments.first { it.name.asString() == "group" }.value }

it.shortName.asString() == "Preview" } val name = previewAnnotation.arguments.first { it.name.asString() == "name" }.value val group = previewAnnotation.arguments.first { it.name.asString() == "group" }.value val wrapperClassMetadata = if (function.parentDeclaration is KSClassDeclaration){ val wrappingClass = (function.parentDeclaration as KSClassDeclaration) wrappingClass.simpleName to wrappingClass.classKind } else null to null }

it.shortName.asString() == "Preview" } val name = previewAnnotation.arguments.first { it.name.asString() == "name" }.value val group = previewAnnotation.arguments.first { it.name.asString() == "group" }.value val wrapperClassMetadata = if (function.parentDeclaration is KSClassDeclaration){ val wrappingClass = (function.parentDeclaration as KSClassDeclaration) wrappingClass.simpleName to wrappingClass.classKind } else null to null } MyClass

it.shortName.asString() == "Preview" } val name = previewAnnotation.arguments.first { it.name.asString() == "name" }.value val group = previewAnnotation.arguments.first { it.name.asString() == "group" }.value val wrapperClassMetadata = if (function.parentDeclaration is KSClassDeclaration){ val wrappingClass = (function.parentDeclaration as KSClassDeclaration) wrappingClass.simpleName to wrappingClass.classKind } else null to null } MyClass ClassKind.Class or ClassKind.Object

resolver.getSymbolsWithAnnotation("androidx.compose.ui.tooling.preview.Preview") .map { function -> ... Metadata( symbol = function,
previewName = name, previewGroup = group, wrapperDeclarationName = wrapperClassMetadata.first, classKind = wrapperClassMetadata.second ) }

@Retention(AnnotationRetention.SOURCE) @Target(AnnotationTarget.FUNCTION) annotation class ShowkaseComposable( val name: String = "",
val group: String = "", )

@ShowkaseComposable(name = "MyCustomComponent", group = "Custom") @Preview(name = "MyCustomComponent", group
= "SectionHeader") @Composables fun MyCustomComponentPreview() { MyCustomComponent("KotlinConf 2023") }

val previewList: List<Metadata> = processPreviewFunctions( ... ) val showkasePreviewList: List<Metadata>
= processPreviewFunctions( ... )

= processPreviewFunctions( ... ) val consolidatedPreviewList = (showkasePreviewList + previewList)

= processPreviewFunctions( ... ) val consolidatedPreviewList = (showkasePreviewList + previewList) .distinctBy { it.declaration.packageName + it.wrapperDeclarationName + it.declaration.simpleName }

= processPreviewFunctions( ... ) val consolidatedPreviewList = (showkasePreviewList + previewList) .distinctBy { it.declaration.packageName + it.wrapperDeclarationName + it.declaration.simpleName } .distinctBy { it.previewGroup + it.previewName }

// Check if the current module is the root module
val rootModule = resolver.getSymbolsWithAnnotation( ShowkaseRoot :: class.java.name ).firstOrNull()

= processPreviewFunctions( ... ) val consolidatedPreviewList = (showkasePreviewList + previewList) .distinctBy { it.declaration.packageName + it.wrapperDeclarationName + it.declaration.simpleName } .distinctBy { it.previewGroup + it.previewName } val rootModule: KSAnnotated? = processRootAnnotation( ... )

Find Elements with Annotation Validate Generate Code Use Generated Code

Validation

🕵 Preview functions aren’t private Validation

🕵 Preview functions aren’t private Validation 👌 Preview functions have
no non-default parameters

🕵 Preview functions aren’t private Validation 👌 Preview functions have
no non-default parameters 🧩 Only @Composable functions can be annotated with @ShowkaseComposable

Square/KotlinPoet https://github.com/square/kotlinpoet

val consolidatePreviewList: List<Metadata>

val consolidatePreviewList: List<Metadata> Previews from current module that’s being processed
by KSP

Metadata

Metadata Top-level Property

val comexamplepackagename_Rows_ImageRow: ShowkaseBrowserComponent = ShowkaseBrowserComponent( group = “Rows”, name =
“ImageRow”, composable = @Composable { ImageRowPreview() } ) Top-level Property

“ImageRow”, composable = @Composable { ImageRowPreview() } ) Top-level Property Package name of preview function Preview Name Preview Group

“ImageRow”, composable = @Composable { ImageRowPreview() } ) Top-level Property

“ImageRow”, composable = @Composable { MyClass().ImageRowPreview() } ) Top-level Property

“ImageRow”, composable = @Composable { MyObject.ImageRowPreview() } ) Top-level Property

Metadata Top-level Property

Metadata Top-level Property Class in fixed package

package com.airbnb.android.showkase @ShowkaseCodegenMetadata( packageName = “com.example.packagename”, generatedPropertyName = “comexamplepackagename_Rows_ImageRow”, )
class ShowkaseMetadata_comexamplepackagename_Rows_ImageRow {} Class in fixed package

com.airbnb.android.showkase ShowkaseMetadata_comexamplepackagename_Rows_DisclosureRow ShowkaseMetadata_comexamplepackagename_Rows_ActionRow ShowkaseMetadata_comexamplepackagename_Rows_ImageRow ShowkaseMetadata_comexamplepackagename_Inputs_TextInput ShowkaseMetadata_comexamplepackagename_Inputs_SelectInput ShowkaseMetadata_comexamplepackagename2_Navigation_NavBar ShowkaseMetadata_comexamplepackagename2_Navigation_ActionFooter C C
C C C C C

val rootModule: KSAnnotated? = processRootAnnotation(…)

val rootModule: KSAnnotated? = processRootAnnotation(…) if (rootModule != null) {
// This means that we are currently processing // the root module }

Root Module

Root Module Aggregator Class

resolver.getDeclarationsFromPackage(“com.airbnb.android.showkase") Aggregator Class

resolver.getDeclarationsFromPackage(“com.airbnb.android.showkase") .filter { it is KSClassDeclaration } Aggregator Class

resolver.getDeclarationsFromPackage(“com.airbnb.android.showkase") .filter { it is KSClassDeclaration } .map { }
Aggregator Class

resolver.getDeclarationsFromPackage(“com.airbnb.android.showkase") .filter { it is KSClassDeclaration } .map { val
annotations = it.getAnnotationsByType( ShowkaseCodegenMetadata :: class ) } Aggregator Class

resolver.getDeclarationsFromPackage( ... ) .filter { it is KSClassDeclaration } .map
{ val annotations = it.getAnnotationsByType( ShowkaseCodegenMetadata :: class ) annotations.firstOrNull() ?. let { annotation -> GeneratedMetadata( propertyName = annotation.generatedPropertyName, propertyPackage = annotation.packageName, classKind = ClassKind.CLASS, originatingNode = it ) } } Aggregator Class

resolver.getDeclarationsFromPackage( ... ) .filter { it is KSClassDeclaration } .map
{ val annotations = it.getAnnotationsByType( ShowkaseCodegenMetadata :: class ) annotations.firstOrNull() ?. let { annotation -> GeneratedMetadata( propertyName = annotation.generatedPropertyName, propertyPackage = annotation.packageName, classKind = ClassKind.CLASS, originatingNode = it ) } } .filterNotNull() .toList() Aggregator Class

val rootModule: KSAnnotated? = processRootAnnotation( ... ) if (rootModule !=
null) { } Aggregator Class

null) { val fixedPackageMetadataList = getFixedPackageMetadata( ... ) } Aggregator Class

null) { val fixedPackageMetadataList = getFixedPackageMetadata( ... ) val aggregatedMetadata = fixedPackageMetadataList + currentPreviewList.map { it.toGeneratedMetadata() } } Aggregator Class

null) { val fixedPackageMetadataList = getFixedPackageMetadata( ... ) val aggregatedMetadata = fixedPackageMetadataList + currentPreviewList.map { it.toGeneratedMetadata() } writeAggregatedFile(aggregatedMetadata) } Aggregator Class

class MyShowkaseRoot_ShowkaseCodegen : ShowkaseProvider { override fun getShowkaseComponents() = listOf(
comexamplepackagename_Rows_DisclosureRow, comexamplepackagename_Rows_ActionRow, comexamplepackagename_Rows_ImageRow, comexamplepackagename_Inputs_TextInput, comexamplepackagename_Inputs_SelectInput, comexamplepackagename2_Navigation_NavBar, comexamplepackagename2_Navigation_ActionFooter, ) } Aggregator Class

val comexamplepackagename_Rows_ImageRow = ShowkaseBrowserComponent( group = "Rows", name = "ImageRow",
composable = @Composable { ImageRowPreview() } )

Root Module Aggregator Class

Root Module Aggregator Class Browser Intent

object Showkase Browser Intent

fun Showkase.getBrowserIntent(context: Context): Intent { } Browser Intent

fun Showkase.getBrowserIntent(context: Context): Intent { val intent = Intent(context, ShowkaseBrowserActivity
:: class.java) } Browser Intent

:: class.java) intent.putExtra(“SHOWKASE_AGGREGATOR_FILE”, “com.yourpackage.MyRootModule_ShowkaseCodegen”) } Browser Intent

:: class.java) intent.putExtra(“SHOWKASE_AGGREGATOR_FILE”, “com.yourpackage.MyRootModule_ShowkaseCodegen”) return intent } Browser Intent

:: class.java) intent.putExtra(“SHOWKASE_AGGREGATOR_FILE”, “com.yourpackage.MyRootModule_ShowkaseCodegen”) return intent } // Usage startActivity(Showkase.getBrowserIntent(requireContext())) Browser Intent

class ShowkaseBrowserActivity: ComponentActivity() { override fun onCreate(savedInstanceState: Bundle?) { }
}

class ShowkaseBrowserActivity: ComponentActivity() { override fun onCreate(savedInstanceState: Bundle?) { val
classKey = intent.extras.getString(“SHOWKASE_AGGREGATOR_FILE”) } }

classKey = intent.extras.getString(“SHOWKASE_AGGREGATOR_FILE”) val provider = Class.forName(classKey) .newInstance() } }

classKey = intent.extras.getString(“SHOWKASE_AGGREGATOR_FILE”) val provider = Class.forName(classKey) .newInstance() val showkaseMetadata = (provider as ShowkaseProvider) .componentList() } }

classKey = intent.extras.getString(“SHOWKASE_AGGREGATOR_FILE”) val provider = Class.forName(classKey) .newInstance() val showkaseMetadata = (provider as ShowkaseProvider) .componentList() // Regular app from this point onwards } }

I would like to link the style variants of a
component together 💅

val group: String = "", )

val group: String = "", val styleName: String = "", val defaultStyle: Boolean = false )

@ShowkaseComposable(name = "Button", group = “Inputs”, defaultStyle = true) @Composable
fun Preview_Button_Default() { ... }

@ShowkaseComposable(name = "Button", defaultStyle = true) @Composable fun Preview_Button_Default() {
... } @ShowkaseComposable(name = "Button", group = “Inputs”, styleName = "Plus") @Composable fun Preview_Button_PlusStyle() { ... } @ShowkaseComposable(name = "Button", group = “Inputs”, styleName = "Lux") @Composable fun Preview_Button_LuxStyle() { ... }

I would like to document other UI Elements   as
well 🌈

@Retention(AnnotationRetention.SOURCE) @Target(AnnotationTarget.FIELD) annotation class ShowkaseTypography( val name: String = "",
val group: String = "", ) @Retention(AnnotationRetention.SOURCE) @Target(AnnotationTarget.FIELD) annotation class ShowkaseColor( val name: String = "", val group: String = "", )

@ShowkaseColor(name = "Primary Color", group = "Material Design") val primaryColor
= Color(0xFF6200EE) @ShowkaseTypography(name = "Heading1", group = "Material Design") val h1 = TextStyle( fontWeight = FontWeight.Light, fontSize = 96.sp, letterSpacing = (-1.5).sp )

= processPreviewFunctions( ... )

= processPreviewFunctions( ... ) val colorList: List<Metadata> = processColors( ... ) val typography: List<Metadata> = processTypography( ... )

interface ShowkaseProvider { fun componentList(): List<BrowserComponent> }

interface ShowkaseProvider { fun componentList(): List<BrowserComponent> fun colors(): List<BrowserColor> fun
typography: List<BrowserTypography> }

Quality

typography: List<BrowserTypography> }

typography: List<BrowserTypography> fun metadata(): ShowkaseElementsMetadata { val componentList = componentList() val colorList = colors() val typographyList = typography() return ShowkaseElementsMetadata(componentList, colorList, typographyList) } }

fun Showkase.getMetadata(): ShowkaseElementsMetadata { }

fun Showkase.getMetadata(): ShowkaseElementsMetadata { try { val provider = Class.forName(
"com.example.packagename.RootModule_ShowkaseCodegen" ).newInstance() as ShowkaseProvider return showkaseComponentProvider.metadata() } catch(exception: ClassNotFoundException) { error("Make sure that you have setup Showkase correctly ... ") } }

val showkaseMetadata = Showkase.metadata()

val showkaseMetadata = Showkase.metadata() val components = showkaseMetadata.componentList() val colors
= showkaseMetadata.colorList() val typography = showkaseMetadata.typographyList()

Having access to all UI elements that you care about
is really POWERFUL 💪

Use case: Screenshot Testing

CashApp/Paparazzi https://github.com/CashApp/Paparazzi

@RunWith(TestParameterInjector :: class) class MyPaparazziShowkaseScreenshotTest_PaparazziShowkaseTest :MyScreenshotTest() { @get:Rule val paparazzi:
Paparazzi = providePaparazzi() @Test fun test_previews( @TestParameter(valuesProvider = PaparazziShowkasePreviewProvider : : class) elementPreview: PaparazziShowkaseTestPreview, @TestParameter(valuesProvider = PaparazziShowkaseDeviceConfigProvider : : class) config: PaparazziShowkaseDeviceConfig, @TestParameter(valuesProvider = PaparazziShowkaseLayoutDirectionProvider : : class) direction: LayoutDirection, @TestParameter(valuesProvider = PaparazziShowkaseUIModeProvider :: class) uiMode: PaparazziShowkaseUIMode, ): Unit { paparazzi.unsafeUpdateConfig(config.deviceConfig.copy(softButtons = false)) takePaparazziSnapshot(paparazzi, elementPreview, direction, uiMode) } private object PaparazziShowkasePreviewProvider : TestParameter.TestParameterValuesProvider { override fun provideValues(): List<PaparazziShowkaseTestPreview> { val metadata = Showkase.getMetadata() val components = metadata.componentList.map( :: ComponentTestPreview) val colors = metadata.colorList.map( : : ColorTestPreview) val typography = metadata.typographyList.map( : : TypographyTestPreview) return components + colors + typography } } private object PaparazziShowkaseDeviceConfigProvider : TestParameter.TestParameterValuesProvider { override fun provideValues(): List<PaparazziShowkaseDeviceConfig> = deviceConfigs() } private object PaparazziShowkaseLayoutDirectionProvider : TestParameter.TestParameterValuesProvider { override fun provideValues(): List<LayoutDirection> = layoutDirections() } private object PaparazziShowkaseUIModeProvider : TestParameter.TestParameterValuesProvider { override fun provideValues(): List<PaparazziShowkaseUIMode> = uiModes() } }

@RunWith(TestParameterInjector :: class) class MyPaparazziShowkaseScreenshotTest_PaparazziShowkaseTest: MyScreenshotTest() { @get:Rule val paparazzi:
Paparazzi = providePaparazzi() @Test fun test_previews( @TestParameter(valuesProvider = PaparazziShowkasePreviewProvider :: class) elementPreview: PaparazziShowkaseTestPreview, @TestParameter(valuesProvider = PaparazziShowkaseDeviceConfigProvider :: class) config: PaparazziShowkaseDeviceConfig, @TestParameter(valuesProvider = PaparazziShowkaseLayoutDirectionProvider :: class) direction: LayoutDirection, @TestParameter(valuesProvider = PaparazziShowkaseUIModeProvider :: class) uiMode: PaparazziShowkaseUIMode, ): Unit { paparazzi.unsafeUpdateConfig(config.deviceConfig.copy(softButtons = false)) takePaparazziSnapshot(paparazzi, elementPreview, direction, uiMode)

@RunWith(TestParameterInjector :: class) class MyPaparazziShowkaseScreenshotTest_PaparazziShowkaseTest: MyScreenshotTest() { @get:Rule val paparazzi:
Paparazzi = providePaparazzi() @Test fun test_previews( @TestParameter(valuesProvider = PaparazziShowkasePreviewProvider :: class) elementPreview: PaparazziShowkaseTestPreview, @TestParameter(valuesProvider = PaparazziShowkaseDeviceConfigProvider :: class) config: PaparazziShowkaseDeviceConfig, @TestParameter(valuesProvider = PaparazziShowkaseLayoutDirectionProvider :: class) direction: LayoutDirection, @TestParameter(valuesProvider = PaparazziShowkaseUIModeProvider :: class) uiMode: PaparazziShowkaseUIMode, ): Unit { paparazzi.unsafeUpdateConfig(config.deviceConfig.copy(softButtons = false)) takePaparazziSnapshot(paparazzi, elementPreview, direction, uiMode) } private object PaparazziShowkasePreviewProvider : TestParameter.TestParameterValuesProvider {

@TestParameter(valuesProvider = PaparazziShowkaseUIModeProvider :: class) uiMode: PaparazziShowkaseUIMode, ): Unit {
paparazzi.unsafeUpdateConfig(config.deviceConfig.copy(softButtons = false)) takePaparazziSnapshot(paparazzi, elementPreview, direction, uiMode) } private object PaparazziShowkasePreviewProvider : TestParameter.TestParameterValuesProvider { override fun provideValues(): List<PaparazziShowkaseTestPreview> { val metadata = Showkase.getMetadata() val components = metadata.componentList.map( :: ComponentTestPreview) val colors = metadata.colorList.map( :: ColorTestPreview) val typography = metadata.typographyList.map( :: TypographyTestPreview) return components + colors + typography } } private object PaparazziShowkaseDeviceConfigProvider : TestParameter.TestParameterValuesProvider { override fun provideValues(): List<PaparazziShowkaseDeviceConfig> = deviceConfigs() }

Wouldn’t it be amazing if I didn’t have to write
all this code that you showed me today 🧘

Showkase https://github.com/airbnb/Showkase

Summary

🔨 KSP needs to be in every engineer’s arsenal Summary

🧩 Keep composability in mind when building UI infrastructure

🧩 Keep composability in mind when building UI infrastructure 😉 Don’t reinvent the wheel, use Showkase

Thank you,   and don’t forget   to vote @
VinayGaba KotlinConf’23 Amsterdam

KotlinConf'23: Automating UI Infrastructure in ...

KotlinConf'23: Automating UI Infrastructure in Jetpack Compose

More Decks by vinaygaba

Other Decks in Programming

Featured

Transcript