Add network connectivity check before launching Chrome Custom Tab

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

@@ -74,7 +74,7 @@ import com.google.samples.apps.nowinandroid.core.designsystem.theme.GradientColo
 import com.google.samples.apps.nowinandroid.core.designsystem.theme.LocalGradientColors
 import com.google.samples.apps.nowinandroid.core.navigation.Navigator
 import com.google.samples.apps.nowinandroid.core.navigation.toEntries
-import com.google.samples.apps.nowinandroid.feature.bookmarks.impl.navigation.LocalSnackbarHostState
+import com.google.samples.apps.nowinandroid.core.ui.LocalSnackbarHostState
 import com.google.samples.apps.nowinandroid.feature.bookmarks.impl.navigation.bookmarksEntry
 import com.google.samples.apps.nowinandroid.feature.foryou.api.navigation.ForYouNavKey
 import com.google.samples.apps.nowinandroid.feature.foryou.impl.navigation.forYouEntry
@@ -83,6 +83,7 @@ import com.google.samples.apps.nowinandroid.feature.search.api.navigation.Search
 import com.google.samples.apps.nowinandroid.feature.search.impl.navigation.searchEntry
 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.core.ui.LocalIsOffline
 import com.google.samples.apps.nowinandroid.navigation.TOP_LEVEL_NAV_ITEMS
 import com.google.samples.apps.nowinandroid.feature.settings.impl.R as settingsR
 
@@ -117,7 +118,10 @@ fun NiaApp(
                     )
                 }
             }
-            CompositionLocalProvider(LocalSnackbarHostState provides snackbarHostState) {
+            CompositionLocalProvider(
+                LocalSnackbarHostState provides snackbarHostState,
+                LocalIsOffline provides isOffline,
+            ) {
                 NiaApp(
                     appState = appState,
 

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

@@ -0,0 +1,21 @@
+/*
+ * Copyright 2026 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.samples.apps.nowinandroid.core.ui
+
+import androidx.compose.runtime.compositionLocalOf
+
+val LocalIsOffline = compositionLocalOf { false }

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

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.samples.apps.nowinandroid.core.ui
+
+import androidx.compose.material3.SnackbarHostState
+import androidx.compose.runtime.compositionLocalOf
+
+val LocalSnackbarHostState = compositionLocalOf<SnackbarHostState> {
+    error("SnackbarHostState should be initialized at runtime")
+}

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

@@ -18,6 +18,7 @@ package com.google.samples.apps.nowinandroid.core.ui
 
 import android.content.Context
 import android.net.Uri
+import android.widget.Toast
 import androidx.annotation.ColorInt
 import androidx.browser.customtabs.CustomTabColorSchemeParams
 import androidx.browser.customtabs.CustomTabsIntent
@@ -62,18 +63,26 @@ fun LazyStaggeredGridScope.newsFeed(
                 val context = LocalContext.current
                 val analyticsHelper = LocalAnalyticsHelper.current
                 val backgroundColor = MaterialTheme.colorScheme.background.toArgb()
+                val isOffline = LocalIsOffline.current
 
                 NewsResourceCardExpanded(
                     userNewsResource = userNewsResource,
                     isBookmarked = userNewsResource.isSaved,
                     onClick = {
-                        onExpandedCardClick()
-                        analyticsHelper.logNewsResourceOpened(
-                            newsResourceId = userNewsResource.id,
-                        )
-                        launchCustomChromeTab(context, Uri.parse(userNewsResource.url), backgroundColor)
-
-                        onNewsResourceViewed(userNewsResource.id)
+                        if (isOffline) {
+                            Toast.makeText(
+                                context,
+                                context.getString(R.string.core_ui_not_connected),
+                                Toast.LENGTH_SHORT,
+                            ).show()
+                        } else {
+                            onExpandedCardClick()
+                            analyticsHelper.logNewsResourceOpened(
+                                newsResourceId = userNewsResource.id,
+                            )
+                            launchCustomChromeTab(context, Uri.parse(userNewsResource.url), backgroundColor)
+                            onNewsResourceViewed(userNewsResource.id)
+                        }
                     },
                     hasBeenViewed = userNewsResource.hasBeenViewed,
                     onToggleBookmark = {

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

@@ -17,6 +17,7 @@
 package com.google.samples.apps.nowinandroid.core.ui
 
 import android.net.Uri
+import android.widget.Toast
 import androidx.compose.foundation.lazy.LazyListScope
 import androidx.compose.foundation.lazy.items
 import androidx.compose.material3.MaterialTheme
@@ -47,6 +48,7 @@ fun LazyListScope.userNewsResourceCardItems(
         val backgroundColor = MaterialTheme.colorScheme.background.toArgb()
         val context = LocalContext.current
         val analyticsHelper = LocalAnalyticsHelper.current
+        val isOffline = LocalIsOffline.current
 
         NewsResourceCardExpanded(
             userNewsResource = userNewsResource,
@@ -54,11 +56,19 @@ fun LazyListScope.userNewsResourceCardItems(
             hasBeenViewed = userNewsResource.hasBeenViewed,
             onToggleBookmark = { onToggleBookmark(userNewsResource) },
             onClick = {
-                analyticsHelper.logNewsResourceOpened(
-                    newsResourceId = userNewsResource.id,
-                )
-                launchCustomChromeTab(context, resourceUrl, backgroundColor)
-                onNewsResourceViewed(userNewsResource.id)
+                if (isOffline) {
+                    Toast.makeText(
+                        context,
+                        context.getString(R.string.core_ui_not_connected),
+                        Toast.LENGTH_SHORT,
+                    ).show()
+                } else {
+                    analyticsHelper.logNewsResourceOpened(
+                        newsResourceId = userNewsResource.id,
+                    )
+                    launchCustomChromeTab(context, resourceUrl, backgroundColor)
+                    onNewsResourceViewed(userNewsResource.id)
+                }
             },
             onTopicClick = onTopicClick,
             modifier = itemModifier,

core/ui/src/main/res/values/strings.xml

@@ -31,4 +31,5 @@
     <string name="core_ui_interests_card_unfollow_button_content_desc">Unfollow interest</string>
     <string name="core_ui_feed_sharing">Feed sharing</string>
     <string name="core_ui_feed_sharing_data">%1$s: %2$s</string>
+    <string name="core_ui_not_connected">Can\'t open, no internet connection</string>
 </resources>

feature/bookmarks/impl/src/main/kotlin/com/google/samples/apps/nowinandroid/feature/bookmarks/impl/navigation/BookmarksEntryProvider.kt

@@ -17,9 +17,8 @@
 package com.google.samples.apps.nowinandroid.feature.bookmarks.impl.navigation
 
 import androidx.compose.material3.SnackbarDuration.Short
-import androidx.compose.material3.SnackbarHostState
 import androidx.compose.material3.SnackbarResult.ActionPerformed
-import androidx.compose.runtime.compositionLocalOf
+import com.google.samples.apps.nowinandroid.core.ui.LocalSnackbarHostState
 import androidx.navigation3.runtime.EntryProviderScope
 import androidx.navigation3.runtime.NavKey
 import com.google.samples.apps.nowinandroid.core.navigation.Navigator
@@ -43,7 +42,3 @@ fun EntryProviderScope<NavKey>.bookmarksEntry(navigator: Navigator) {
     }
 }
 
-// TODO: Why is this here?
-val LocalSnackbarHostState = compositionLocalOf<SnackbarHostState> {
-    error("SnackbarHostState state should be initialized at runtime")
-}