feat: updates @DevicePreviews to use the Devices object constants

app/build.gradle.kts

@@ -91,6 +91,7 @@ dependencies {
     implementation(libs.androidx.activity.compose)
     implementation(libs.androidx.compose.material3)
     implementation(libs.androidx.navigation3.ui)
+    implementation(libs.androidx.navigationevent.compose)
     implementation(libs.androidx.compose.material3.adaptive)
     implementation(libs.androidx.compose.material3.adaptive.layout)
     implementation(libs.androidx.compose.material3.adaptive.navigation)

app/src/main/kotlin/com/google/samples/apps/nowinandroid/ui/NiaApp.kt

@@ -64,16 +64,26 @@ import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.navigation3.runtime.NavKey
 import androidx.navigation3.runtime.entryProvider
 import androidx.navigation3.ui.NavDisplay
+import androidx.navigationevent.compose.LocalNavigationEventDispatcherOwner
+import androidx.navigationevent.NavigationEventDispatcher
+import androidx.navigationevent.NavigationEventDispatcherOwner
 import com.google.samples.apps.nowinandroid.R
+import com.google.samples.apps.nowinandroid.core.data.repository.NewsResourceQuery
+import com.google.samples.apps.nowinandroid.core.data.repository.UserNewsResourceRepository
+import com.google.samples.apps.nowinandroid.core.data.util.NetworkMonitor
+import com.google.samples.apps.nowinandroid.core.data.util.TimeZoneMonitor
 import com.google.samples.apps.nowinandroid.core.designsystem.component.NiaBackground
 import com.google.samples.apps.nowinandroid.core.designsystem.component.NiaGradientBackground
 import com.google.samples.apps.nowinandroid.core.designsystem.component.NiaNavigationSuiteScaffold
 import com.google.samples.apps.nowinandroid.core.designsystem.component.NiaTopAppBar
 import com.google.samples.apps.nowinandroid.core.designsystem.icon.NiaIcons
 import com.google.samples.apps.nowinandroid.core.designsystem.theme.GradientColors
 import com.google.samples.apps.nowinandroid.core.designsystem.theme.LocalGradientColors
+import com.google.samples.apps.nowinandroid.core.designsystem.theme.NiaTheme
+import com.google.samples.apps.nowinandroid.core.model.data.UserNewsResource
 import com.google.samples.apps.nowinandroid.core.navigation.Navigator
 import com.google.samples.apps.nowinandroid.core.navigation.toEntries
+import com.google.samples.apps.nowinandroid.core.ui.DevicePreviews
 import com.google.samples.apps.nowinandroid.feature.bookmarks.impl.navigation.LocalSnackbarHostState
 import com.google.samples.apps.nowinandroid.feature.bookmarks.impl.navigation.bookmarksEntry
 import com.google.samples.apps.nowinandroid.feature.foryou.api.navigation.ForYouNavKey
@@ -84,6 +94,9 @@ import com.google.samples.apps.nowinandroid.feature.search.impl.navigation.searc
 import com.google.samples.apps.nowinandroid.feature.settings.impl.SettingsDialog
 import com.google.samples.apps.nowinandroid.feature.topic.impl.navigation.topicEntry
 import com.google.samples.apps.nowinandroid.navigation.TOP_LEVEL_NAV_ITEMS
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.flowOf
+import kotlinx.datetime.TimeZone
 import com.google.samples.apps.nowinandroid.feature.settings.impl.R as settingsR
 
 @Composable
@@ -205,6 +218,9 @@ internal fun NiaApp(
                     ),
                 )
             },
+            // Fix for render issue: Scaffold crashes with "List is empty" when contentWindowInsets is set
+            // but no top/bottom bar is present in some Compose versions.
+            bottomBar = {},
         ) { padding ->
             Column(
                 Modifier
@@ -296,3 +312,37 @@ private fun Modifier.notificationDot(): Modifier =
             )
         }
     }
+
+@DevicePreviews
+@Composable
+fun NiaAppPreview() {
+    NiaTheme {
+        CompositionLocalProvider(
+            LocalNavigationEventDispatcherOwner provides object : NavigationEventDispatcherOwner {
+                override val navigationEventDispatcher = NavigationEventDispatcher()
+            }
+        ) {
+            NiaApp(
+                appState = rememberNiaAppState(
+                    networkMonitor = object : NetworkMonitor {
+                        override val isOnline: Flow<Boolean> = flowOf(true)
+                    },
+                    userNewsResourceRepository = object : UserNewsResourceRepository {
+                        override fun observeAll(query: NewsResourceQuery): Flow<List<UserNewsResource>> =
+                            flowOf(emptyList())
+
+                        override fun observeAllForFollowedTopics(): Flow<List<UserNewsResource>> =
+                            flowOf(emptyList())
+
+                        override fun observeAllBookmarked(): Flow<List<UserNewsResource>> =
+                            flowOf(emptyList())
+                    },
+                    timeZoneMonitor = object : TimeZoneMonitor {
+                        override val currentTimeZone: Flow<TimeZone> =
+                            flowOf(TimeZone.currentSystemDefault())
+                    },
+                ),
+            )
+        }
+    }
+}

core/datastore-proto/build.gradle.kts

@@ -42,14 +42,6 @@ protobuf {
     }
 }
 
-androidComponents.beforeVariants {
-    android.sourceSets.register(it.name) {
-        val buildDir = layout.buildDirectory.get().asFile
-        java.srcDir(buildDir.resolve("generated/source/proto/${it.name}/java"))
-        kotlin.srcDir(buildDir.resolve("generated/source/proto/${it.name}/kotlin"))
-    }
-}
-
 dependencies {
     api(libs.protobuf.kotlin.lite)
 }

core/ui/src/main/kotlin/com/google/samples/apps/nowinandroid/core/ui/DevicePreviews.kt

@@ -16,14 +16,15 @@
 
 package com.google.samples.apps.nowinandroid.core.ui
 
+import androidx.compose.ui.tooling.preview.Devices
 import androidx.compose.ui.tooling.preview.Preview
 
 /**
  * Multipreview annotation that represents various device sizes. Add this annotation to a composable
  * to render various devices.
  */
-@Preview(name = "phone", device = "spec:shape=Normal,width=360,height=640,unit=dp,dpi=480")
-@Preview(name = "landscape", device = "spec:shape=Normal,width=640,height=360,unit=dp,dpi=480")
-@Preview(name = "foldable", device = "spec:shape=Normal,width=673,height=841,unit=dp,dpi=480")
-@Preview(name = "tablet", device = "spec:shape=Normal,width=1280,height=800,unit=dp,dpi=480")
+@Preview(name = "phone", device = Devices.PHONE, showBackground = true)
+@Preview(name = "foldable", device = Devices.FOLDABLE, showBackground = true)
+@Preview(name = "tablet", device = Devices.TABLET, showBackground = true)
+@Preview(name = "desktop", device = Devices.DESKTOP, showBackground = true)
 annotation class DevicePreviews

feature/foryou/impl/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/foryou/impl/ForYouScreen.kt

@@ -618,3 +618,24 @@ fun ForYouScreenPopulatedAndLoading(
         )
     }
 }
+
+@DevicePreviews
+@Composable
+fun ForYouScreenNotPopulatedOnboarding() {
+    NiaTheme {
+        ForYouScreen(
+            isSyncing = true,
+            onboardingUiState = OnboardingUiState.Shown(
+                topics = emptyList(),
+            ),
+            feedState = NewsFeedUiState.Loading,
+            deepLinkedUserNewsResource = null,
+            onTopicCheckedChanged = { _, _ -> },
+            saveFollowedTopics = {},
+            onNewsResourcesCheckedChanged = { _, _ -> },
+            onNewsResourceViewed = {},
+            onTopicClick = {},
+            onDeepLinkOpened = {},
+        )
+    }
+}

feature/foryou/impl/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/foryou/impl/navigation/ForYouEntryProvider.kt

@@ -16,17 +16,35 @@
 
 package com.google.samples.apps.nowinandroid.feature.foryou.impl.navigation
 
+import androidx.compose.ui.platform.LocalInspectionMode
 import androidx.navigation3.runtime.EntryProviderScope
 import androidx.navigation3.runtime.NavKey
 import com.google.samples.apps.nowinandroid.core.navigation.Navigator
+import com.google.samples.apps.nowinandroid.core.ui.NewsFeedUiState
 import com.google.samples.apps.nowinandroid.feature.foryou.api.navigation.ForYouNavKey
 import com.google.samples.apps.nowinandroid.feature.foryou.impl.ForYouScreen
+import com.google.samples.apps.nowinandroid.feature.foryou.impl.OnboardingUiState
 import com.google.samples.apps.nowinandroid.feature.topic.api.navigation.navigateToTopic
 
 fun EntryProviderScope<NavKey>.forYouEntry(navigator: Navigator) {
     entry<ForYouNavKey> {
-        ForYouScreen(
-            onTopicClick = navigator::navigateToTopic,
-        )
+        if (LocalInspectionMode.current) {
+            ForYouScreen(
+                isSyncing = false,
+                onboardingUiState = OnboardingUiState.NotShown,
+                feedState = NewsFeedUiState.Success(emptyList()),
+                deepLinkedUserNewsResource = null,
+                onTopicCheckedChanged = { _, _ -> },
+                onTopicClick = {},
+                onDeepLinkOpened = {},
+                saveFollowedTopics = {},
+                onNewsResourcesCheckedChanged = { _, _ -> },
+                onNewsResourceViewed = {},
+            )
+        } else {
+            ForYouScreen(
+                onTopicClick = navigator::navigateToTopic,
+            )
+        }
     }
 }

gradle/libs.versions.toml

@@ -106,6 +106,7 @@ androidx-metrics = { group = "androidx.metrics", name = "metrics-performance", v
 androidx-navigation-testing = { group = "androidx.navigation", name = "navigation-testing", version.ref = "androidxNavigation" }
 androidx-navigation3-runtime = { group = "androidx.navigation3", name = "navigation3-runtime", version.ref = "androidxNavigation3" }
 androidx-navigation3-ui = { group = "androidx.navigation3", name = "navigation3-ui", version.ref = "androidxNavigation3" }
+androidx-navigationevent-compose = { group = "androidx.navigationevent", name = "navigationevent-compose", version = "1.0.1" }
 androidx-savedstate-compose = { group = "androidx.savedstate", name = "savedstate-compose", version.ref = "androidxSavedStateCompose" }
 androidx-profileinstaller = { group = "androidx.profileinstaller", name = "profileinstaller", version.ref = "androidxProfileinstaller" }
 androidx-test-core = { group = "androidx.test", name = "core", version.ref = "androidxTestCore" }