🔧 By upgrading the version of Compose Multiplatform itself and the accompanying dependencies, we have addressed the issue of fling scrolling not working on iOS in Compose Multiplatform.

app-android/src/main/java/io/github/droidkaigi/confsched/MainActivity.kt

@@ -10,7 +10,6 @@ import androidx.activity.enableEdgeToEdge
 import androidx.compose.material3.windowsizeclass.ExperimentalMaterial3WindowSizeClassApi
 import androidx.compose.material3.windowsizeclass.calculateWindowSizeClass
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.produceState
 import androidx.compose.runtime.remember
@@ -22,6 +21,7 @@ import androidx.window.layout.WindowInfoTracker
 import dagger.hilt.android.AndroidEntryPoint
 import io.github.droidkaigi.confsched.data.di.RepositoryProvider
 import io.github.droidkaigi.confsched.designsystem.theme.dotGothic16FontFamily
+import io.github.droidkaigi.confsched.droidkaigiui.KaigiAppCompositionLocalProvider
 import io.github.droidkaigi.confsched.droidkaigiui.compositionlocal.LocalClock
 import io.github.droidkaigi.confsched.model.FontFamily.DotGothic16Regular
 import io.github.droidkaigi.confsched.model.FontFamily.SystemDefault
@@ -90,8 +90,10 @@ class MainActivity : ComponentActivity() {
                 }
             }
 
-            CompositionLocalProvider(
-                LocalClock provides clockProvider.clock(),
+            KaigiAppCompositionLocalProvider(
+                locals = arrayOf(
+                    LocalClock provides clockProvider.clock(),
+                ),
             ) {
                 repositoryProvider.Provide {
                     KaigiApp(

build.gradle.kts

@@ -27,7 +27,7 @@ allprojects {
         resolutionStrategy {
             // When the fixed version is released, remove this block
             // https://issuetracker.google.com/issues/341880461
-            force("androidx.compose.foundation:foundation:1.6.8")
+            force("androidx.compose.foundation:foundation:1.8.0-alpha01")
         }
     }
 }

core/droidkaigiui/src/androidMain/kotlin/io/github/droidkaigi/confsched/droidkaigiui/KaigiAppCompositionLocalProvider.kt

@@ -0,0 +1,18 @@
+package io.github.droidkaigi.confsched.droidkaigiui
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.ProvidedValue
+
+@Composable
+inline fun KaigiAppCompositionLocalProvider(
+    vararg locals: ProvidedValue<*>,
+    crossinline content: @Composable () -> Unit,
+) {
+    CompositionLocalProvider(*locals) {
+        if (isTest()) {
+            ProvideAndroidContextToComposeResource()
+        }
+        content()
+    }
+}

core/droidkaigiui/src/androidMain/kotlin/io/github/droidkaigi/confsched/droidkaigiui/ProvideAndroidContextToComposeResource.kt

@@ -0,0 +1,15 @@
+package io.github.droidkaigi.confsched.droidkaigiui
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.ui.platform.LocalInspectionMode
+import org.jetbrains.compose.resources.ExperimentalResourceApi
+import org.jetbrains.compose.resources.PreviewContextConfigurationEffect
+
+@OptIn(ExperimentalResourceApi::class)
+@Composable
+fun ProvideAndroidContextToComposeResource() {
+    CompositionLocalProvider(LocalInspectionMode provides true) {
+        PreviewContextConfigurationEffect()
+    }
+}

core/droidkaigiui/src/commonMain/kotlin/io/github/droidkaigi/confsched/droidkaigiui/component/TimetableItemCard.kt

@@ -25,11 +25,11 @@ import androidx.compose.material.icons.filled.Favorite
 import androidx.compose.material.icons.filled.Info
 import androidx.compose.material.icons.filled.Person
 import androidx.compose.material.icons.outlined.FavoriteBorder
-import androidx.compose.material.ripple.rememberRipple
 import androidx.compose.material3.Icon
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
+import androidx.compose.material3.ripple
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
@@ -107,7 +107,7 @@ fun TimetableItemCard(
                 )
                 .clickable(
                     interactionSource = remember { MutableInteractionSource() },
-                    indication = rememberRipple(color = LocalRoomTheme.current.primaryColor),
+                    indication = ripple(color = LocalRoomTheme.current.primaryColor),
                     onClick = dropUnlessResumed { onTimetableItemClick(timetableItem) },
                 ),
         ) {

core/testing/src/main/java/io/github/droidkaigi/confsched/testing/DroidKaigiKmpPreviewTester.kt

@@ -5,6 +5,7 @@ import com.github.takahirom.roborazzi.ComposePreviewTester.Options
 import com.github.takahirom.roborazzi.ComposePreviewTester.Options.JUnit4TestLifecycleOptions
 import com.github.takahirom.roborazzi.ExperimentalRoborazziApi
 import com.github.takahirom.roborazzi.captureRoboImage
+import io.github.droidkaigi.confsched.droidkaigiui.ProvideAndroidContextToComposeResource
 import io.github.droidkaigi.confsched.testing.rules.CoilRule
 import sergio.sastre.composable.preview.scanner.core.preview.ComposablePreview
 import sergio.sastre.composable.preview.scanner.jvm.JvmAnnotationInfo
@@ -28,6 +29,7 @@ class DroidKaigiKmpPreviewTester : ComposePreviewTester<JvmAnnotationInfo> {
     override fun test(preview: ComposablePreview<JvmAnnotationInfo>) {
         captureRoboImage("${preview.methodName}.png") {
             println(preview.methodName)
+            ProvideAndroidContextToComposeResource()
             preview()
         }
     }

core/testing/src/main/java/io/github/droidkaigi/confsched/testing/rules/RobotTestRule.kt

@@ -26,6 +26,7 @@ import dagger.hilt.EntryPoints
 import dagger.hilt.InstallIn
 import dagger.hilt.components.SingletonComponent
 import io.github.droidkaigi.confsched.data.di.RepositoryProvider
+import io.github.droidkaigi.confsched.droidkaigiui.ProvideAndroidContextToComposeResource
 import io.github.droidkaigi.confsched.testing.HiltTestActivity
 import org.junit.rules.RuleChain
 import org.junit.rules.TestRule
@@ -141,6 +142,7 @@ class RobotTestRule(
             .getRepositoryProvider()
         composeTestRule.setContent {
             repositoryProvider.Provide {
+                ProvideAndroidContextToComposeResource()
                 content()
             }
         }

feature/profilecard/src/commonMain/kotlin/io/github/droidkaigi/confsched/profilecard/component/CaptureableCardBack.kt

@@ -24,8 +24,11 @@ import androidx.compose.ui.unit.Density
 import androidx.compose.ui.unit.dp
 import co.touchlab.kermit.Logger
 import coil3.compose.AsyncImagePainter
+import com.preat.peekaboo.image.picker.toImageBitmap
 import io.github.droidkaigi.confsched.droidkaigiui.compositionlocal.LocalClock
+import io.github.droidkaigi.confsched.model.generateColoredImageBase64
 import io.github.droidkaigi.confsched.profilecard.ProfileCardUiState.Card
+import io.github.droidkaigi.confsched.profilecard.decodeBase64Bytes
 import kotlinx.coroutines.flow.first
 
 @Composable
@@ -44,7 +47,17 @@ internal fun BackgroundCapturableCardBack(
         }
         qrCodeImagePainter.state.first { it is AsyncImagePainter.State.Success }
         Logger.d { "BackgroundCapturableCardBack: onCaptured" }
-        onCaptured(graphicsLayer.toImageBitmap())
+        try {
+            // FIXME In the tests currently implemented, an IllegalArgumentException is thrown when SkiaGraphicsLayer.toImageBitmap is executed.
+            // FIXME https://github.com/DroidKaigi/conference-app-2024/pull/984#issuecomment-2335126855
+            onCaptured(graphicsLayer.toImageBitmap())
+        } catch (e: IllegalArgumentException) {
+            val workAroundImageBitmap = generateColoredImageBase64()
+                .decodeBase64Bytes()
+                .toImageBitmap()
+            onCaptured(workAroundImageBitmap)
+            Logger.e("In the tests currently implemented, an IllegalArgumentException is thrown when SkiaGraphicsLayer.toImageBitmap is executed.", e)
+        }
     }
 
     Box(

feature/profilecard/src/commonMain/kotlin/io/github/droidkaigi/confsched/profilecard/component/CaptureableCardFront.kt

@@ -22,8 +22,11 @@ import androidx.compose.ui.unit.Density
 import androidx.compose.ui.unit.dp
 import co.touchlab.kermit.Logger
 import coil3.compose.AsyncImagePainter
+import com.preat.peekaboo.image.picker.toImageBitmap
 import io.github.droidkaigi.confsched.droidkaigiui.compositionlocal.LocalClock
+import io.github.droidkaigi.confsched.model.generateColoredImageBase64
 import io.github.droidkaigi.confsched.profilecard.ProfileCardUiState.Card
+import io.github.droidkaigi.confsched.profilecard.decodeBase64Bytes
 import kotlinx.coroutines.flow.first
 
 @Composable
@@ -42,7 +45,17 @@ internal fun BackgroundCapturableCardFront(
         }
         profileImagePainter.state.first { it is AsyncImagePainter.State.Success }
         Logger.d { "BackgroundCapturableCardFront: onCaptured" }
-        onCaptured(graphicsLayer.toImageBitmap())
+        try {
+            // FIXME In the tests currently implemented, an IllegalArgumentException is thrown when SkiaGraphicsLayer.toImageBitmap is executed.
+            // FIXME https://github.com/DroidKaigi/conference-app-2024/pull/984#issuecomment-2335126855
+            onCaptured(graphicsLayer.toImageBitmap())
+        } catch (e: IllegalArgumentException) {
+            val workAroundImageBitmap = generateColoredImageBase64()
+                .decodeBase64Bytes()
+                .toImageBitmap()
+            onCaptured(workAroundImageBitmap)
+            Logger.e("In the tests currently implemented, an IllegalArgumentException is thrown when SkiaGraphicsLayer.toImageBitmap is executed.", e)
+        }
     }
 
     Box(

gradle/libs.versions.toml

@@ -7,11 +7,11 @@ kotlin = "2.0.10"
 
 androidxCore = "1.13.1"
 androidDesugarJdkLibs = "2.0.4"
-compose = "2024.06.00"
-composeMultiplatform = "1.6.11"
+compose = "2024.09.00"
+composeMultiplatform = "1.7.0-alpha02"
 rin = "0.1.0"
 composeInvestigator = "1.5.10-0.2.1"
-composeMaterial3 = "1.2.1"
+composeMaterial3 = "1.3.0"
 composeHiltNavigation = "1.2.0"
 androidxLifecycle = "2.8.4"
 androidxActivity = "1.9.1"