Fix crash when putting app in background while on notes screen (#3515)

CHANGELOG.md

@@ -18,6 +18,7 @@ The format is a modified version of [Keep a Changelog](https://keepachangelog.co
 
 ### Fixed
 - Fix Shikimori tracking not working ([@MajorTanya](https://github.com/MajorTanya)) ([#3497](https://github.com/mihonapp/mihon/pull/3497))
+- Fix crash when putting app in background while on notes screen ([@AntsyLich](https://github.com/AntsyLich)) ([#3515](https://github.com/mihonapp/mihon/pull/3515))
 
 ## [v0.20.0] - 2026-06-27
 ### Added

app/src/main/java/eu/kanade/presentation/manga/MangaNotesScreen.kt

@@ -25,7 +25,7 @@ fun MangaNotesScreen(
                 titleContent = {
                     AppBarTitle(
                         title = stringResource(MR.strings.action_edit_notes),
-                        subtitle = state.manga.title,
+                        subtitle = state.mangaTitle,
                     )
                 },
                 navigateUp = navigateUp,

app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaScreen.kt

@@ -161,7 +161,15 @@ class MangaScreen(
             onMigrateClicked = {
                 navigator.push(MigrationConfigScreen(successState.manga.id))
             }.takeIf { successState.manga.favorite },
-            onEditNotesClicked = { navigator.push(MangaNotesScreen(manga = successState.manga)) },
+            onEditNotesClicked = {
+                navigator.push(
+                    MangaNotesScreen(
+                        mangaId = successState.manga.id,
+                        mangaTitle = successState.manga.title,
+                        mangaNotes = successState.manga.notes,
+                    ),
+                )
+            },
             onMultiBookmarkClicked = screenModel::bookmarkChapters,
             onMultiMarkAsReadClicked = screenModel::markChaptersRead,
             onMarkPreviousAsReadClicked = screenModel::markPreviousChapterRead,

app/src/main/java/eu/kanade/tachiyomi/ui/manga/notes/MangaNotesScreen.kt

@@ -1,9 +1,14 @@
 package eu.kanade.tachiyomi.ui.manga.notes
 
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.Immutable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
+import androidx.compose.ui.platform.AndroidClipboard
+import androidx.compose.ui.platform.LocalClipboard
+import androidx.compose.ui.platform.nativeClipboardManager
 import cafe.adriel.voyager.core.model.StateScreenModel
 import cafe.adriel.voyager.core.model.rememberScreenModel
 import cafe.adriel.voyager.core.model.screenModelScope
@@ -12,6 +17,7 @@ import cafe.adriel.voyager.navigator.currentOrThrow
 import eu.kanade.presentation.manga.MangaNotesScreen
 import eu.kanade.presentation.util.Screen
 import kotlinx.coroutines.flow.update
+import kotlinx.serialization.Serializable
 import tachiyomi.core.common.util.lang.launchNonCancellable
 import tachiyomi.domain.manga.interactor.UpdateMangaNotes
 import tachiyomi.domain.manga.model.Manga
@@ -19,13 +25,21 @@ import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get
 
 class MangaNotesScreen(
-    private val manga: Manga,
+    private val mangaId: Long,
+    private val mangaTitle: String,
+    private val mangaNotes: String,
 ) : Screen() {
     @Composable
     override fun Content() {
         val navigator = LocalNavigator.currentOrThrow
 
-        val screenModel = rememberScreenModel { Model(manga) }
+        val screenModel = rememberScreenModel {
+            Model(
+                mangaId = mangaId,
+                mangaTitle = mangaTitle,
+                mangaNotes = mangaNotes,
+            )
+        }
         val state by screenModel.state.collectAsState()
 
         MangaNotesScreen(
@@ -36,9 +50,11 @@ class MangaNotesScreen(
     }
 
     private class Model(
-        private val manga: Manga,
+        mangaTitle: String,
+        mangaNotes: String,
+        private val mangaId: Long,
         private val updateMangaNotes: UpdateMangaNotes = Injekt.get(),
-    ) : StateScreenModel<State>(State(manga, manga.notes)) {
+    ) : StateScreenModel<State>(State(mangaId, mangaTitle, mangaNotes)) {
 
         fun updateNotes(content: String) {
             if (content == state.value.notes) return
@@ -48,14 +64,15 @@ class MangaNotesScreen(
             }
 
             screenModelScope.launchNonCancellable {
-                updateMangaNotes(manga.id, content)
+                updateMangaNotes(mangaId, content)
             }
         }
     }
 
     @Immutable
     data class State(
-        val manga: Manga,
+        val mangaId: Long,
+        val mangaTitle: String,
         val notes: String,
     )
 }