Address more coroutine scope leaks

2024-06-30 17:56:02 +02:00 · 2021-01-07 18:15:57 -05:00 · 2021-01-07 18:15:57 -05:00 · 6fb7a85e8a
commit 6fb7a85e8a
parent 36f81b4a62
23 changed files with 85 additions and 83 deletions
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@ -272,7 +272,7 @@ dependencies {
    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:$coroutinesVersion")

    // For detecting memory leaks; see https://square.github.io/leakcanary/
-//    debugImplementation("com.squareup.leakcanary:leakcanary-android:2.4")
+    // debugImplementation("com.squareup.leakcanary:leakcanary-android:2.6")
 }

 tasks {
--- a/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadProvider.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadProvider.kt
@ -9,9 +9,7 @@ import eu.kanade.tachiyomi.data.database.models.Manga
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.source.Source
 import eu.kanade.tachiyomi.util.storage.DiskUtil
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
+import kotlinx.coroutines.MainScope
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import timber.log.Timber
@ -27,7 +25,7 @@ class DownloadProvider(private val context: Context) {

    private val preferences: PreferencesHelper by injectLazy()

-    private val scope = CoroutineScope(Job() + Dispatchers.Main)
+    private val scope = MainScope()

    /**
     * The root directory for downloads.
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/base/presenter/BasePresenter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/base/presenter/BasePresenter.kt
@ -1,21 +1,32 @@
 package eu.kanade.tachiyomi.ui.base.presenter

 import android.os.Bundle
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.MainScope
+import kotlinx.coroutines.cancel
 import nucleus.presenter.RxPresenter
 import nucleus.presenter.delivery.Delivery
 import rx.Observable

 open class BasePresenter<V> : RxPresenter<V>() {

+    lateinit var presenterScope: CoroutineScope
+
    override fun onCreate(savedState: Bundle?) {
        try {
            super.onCreate(savedState)
+            presenterScope = MainScope()
        } catch (e: NullPointerException) {
            // Swallow this error. This should be fixed in the library but since it's not critical
            // (only used by restartables) it should be enough. It saves me a fork.
        }
    }

+    override fun onDestroy() {
+        super.onDestroy()
+        presenterScope.cancel()
+    }
+
    /**
     * Subscribes an observable with [deliverFirst] and adds it to the presenter's lifecycle
     * subscription list.
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/extension/details/ExtensionDetailsHeaderAdapter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/extension/details/ExtensionDetailsHeaderAdapter.kt
@ -9,9 +9,6 @@ import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.databinding.ExtensionDetailHeaderBinding
 import eu.kanade.tachiyomi.ui.browse.extension.getApplicationIcon
 import eu.kanade.tachiyomi.util.system.LocaleHelper
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import reactivecircus.flowbinding.android.view.clicks
@ -19,7 +16,6 @@ import reactivecircus.flowbinding.android.view.clicks
 class ExtensionDetailsHeaderAdapter(private val presenter: ExtensionDetailsPresenter) :
    RecyclerView.Adapter<ExtensionDetailsHeaderAdapter.HeaderViewHolder>() {

-    private val scope = CoroutineScope(Job() + Dispatchers.Main)
    private lateinit var binding: ExtensionDetailHeaderBinding

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): HeaderViewHolder {
@ -47,7 +43,7 @@ class ExtensionDetailsHeaderAdapter(private val presenter: ExtensionDetailsPrese

            binding.extensionUninstallButton.clicks()
                .onEach { presenter.uninstallExtension() }
-                .launchIn(scope)
+                .launchIn(presenter.presenterScope)

            if (extension.isObsolete) {
                binding.extensionWarningBanner.isVisible = true
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/SourcePresenter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/SourcePresenter.kt
@ -6,9 +6,6 @@ import eu.kanade.tachiyomi.source.CatalogueSource
 import eu.kanade.tachiyomi.source.LocalSource
 import eu.kanade.tachiyomi.source.SourceManager
 import eu.kanade.tachiyomi.ui.base.presenter.BasePresenter
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.flow.drop
@ -33,8 +30,6 @@ class SourcePresenter(
    private val preferences: PreferencesHelper = Injekt.get()
 ) : BasePresenter<SourceController>() {

-    private val scope = CoroutineScope(Job() + Dispatchers.Main)
-
    var sources = getEnabledSources()

    /**
@ -98,7 +93,7 @@ class SourcePresenter(
            .onStart { delay(500) }
            .distinctUntilChanged()
            .onEach { updateLastUsedSource(it) }
-            .launchIn(scope)
+            .launchIn(presenterScope)
    }

    private fun updateLastUsedSource(sourceId: Long) {
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/filter/TextItem.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/filter/TextItem.kt
@ -10,16 +10,14 @@ import eu.davidea.flexibleadapter.items.IFlexible
 import eu.davidea.viewholders.FlexibleViewHolder
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.source.model.Filter
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
+import kotlinx.coroutines.MainScope
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import reactivecircus.flowbinding.android.widget.textChanges

 open class TextItem(val filter: Filter.Text) : AbstractFlexibleItem<TextItem.Holder>() {

-    private val scope = CoroutineScope(Job() + Dispatchers.Main)
+    private val scope = MainScope()

    override fun getLayoutRes(): Int {
        return R.layout.navigation_view_text
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryCategoryView.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryCategoryView.kt
@ -19,9 +19,7 @@ import eu.kanade.tachiyomi.util.lang.plusAssign
 import eu.kanade.tachiyomi.util.system.toast
 import eu.kanade.tachiyomi.util.view.inflate
 import eu.kanade.tachiyomi.widget.AutofitRecyclerView
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
+import kotlinx.coroutines.MainScope
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import reactivecircus.flowbinding.recyclerview.scrollStateChanges
@ -37,7 +35,7 @@ class LibraryCategoryView @JvmOverloads constructor(context: Context, attrs: Att
    FlexibleAdapter.OnItemClickListener,
    FlexibleAdapter.OnItemLongClickListener {

-    private val scope = CoroutineScope(Job() + Dispatchers.Main)
+    private val scope = MainScope()

    private val preferences: PreferencesHelper by injectLazy()

--- a/app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/MangaChaptersHeaderAdapter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/MangaChaptersHeaderAdapter.kt
@ -9,9 +9,6 @@ import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.databinding.MangaChaptersHeaderBinding
 import eu.kanade.tachiyomi.ui.manga.MangaController
 import eu.kanade.tachiyomi.util.system.getResourceColor
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.merge
 import kotlinx.coroutines.flow.onEach
@ -25,7 +22,6 @@ class MangaChaptersHeaderAdapter(
    private var numChapters: Int? = null
    private var hasActiveFilters: Boolean = false

-    private val scope = CoroutineScope(Job() + Dispatchers.Main)
    private lateinit var binding: MangaChaptersHeaderBinding

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): HeaderViewHolder {
@ -68,7 +64,7 @@ class MangaChaptersHeaderAdapter(

            merge(view.clicks(), binding.btnChaptersFilter.clicks())
                .onEach { controller.showSettingsSheet() }
-                .launchIn(scope)
+                .launchIn(controller.viewScope)
        }
    }
 }
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/manga/info/MangaInfoHeaderAdapter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/manga/info/MangaInfoHeaderAdapter.kt
@ -23,9 +23,6 @@ import eu.kanade.tachiyomi.ui.manga.MangaController
 import eu.kanade.tachiyomi.util.system.copyToClipboard
 import eu.kanade.tachiyomi.util.system.getResourceColor
 import eu.kanade.tachiyomi.util.view.setChips
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.merge
 import kotlinx.coroutines.flow.onEach
@ -47,7 +44,6 @@ class MangaInfoHeaderAdapter(
    private var source: Source = controller.presenter.source
    private var trackCount: Int = 0

-    private val scope = CoroutineScope(Job() + Dispatchers.Main)
    private lateinit var binding: MangaInfoHeaderBinding

    private var initialLoad: Boolean = true
@ -90,12 +86,12 @@ class MangaInfoHeaderAdapter(

            binding.btnFavorite.clicks()
                .onEach { controller.onFavoriteClick() }
-                .launchIn(scope)
+                .launchIn(controller.viewScope)

            if (controller.presenter.manga.favorite && controller.presenter.getCategories().isNotEmpty()) {
                binding.btnFavorite.longClicks()
                    .onEach { controller.onCategoriesClick() }
-                    .launchIn(scope)
+                    .launchIn(controller.viewScope)
            }

            with(binding.btnTracking) {
@ -118,7 +114,7 @@ class MangaInfoHeaderAdapter(

                    clicks()
                        .onEach { controller.onTrackingClick() }
-                        .launchIn(scope)
+                        .launchIn(controller.viewScope)
                } else {
                    isVisible = false
                }
@ -128,7 +124,7 @@ class MangaInfoHeaderAdapter(
                binding.btnWebview.isVisible = true
                binding.btnWebview.clicks()
                    .onEach { controller.openMangaInWebView() }
-                    .launchIn(scope)
+                    .launchIn(controller.viewScope)
            }

            binding.mangaFullTitle.longClicks()
@ -138,13 +134,13 @@ class MangaInfoHeaderAdapter(
                        binding.mangaFullTitle.text.toString()
                    )
                }
-                .launchIn(scope)
+                .launchIn(controller.viewScope)

            binding.mangaFullTitle.clicks()
                .onEach {
                    controller.performGlobalSearch(binding.mangaFullTitle.text.toString())
                }
-                .launchIn(scope)
+                .launchIn(controller.viewScope)

            binding.mangaAuthor.longClicks()
                .onEach {
@ -153,13 +149,13 @@ class MangaInfoHeaderAdapter(
                        binding.mangaAuthor.text.toString()
                    )
                }
-                .launchIn(scope)
+                .launchIn(controller.viewScope)

            binding.mangaAuthor.clicks()
                .onEach {
                    controller.performGlobalSearch(binding.mangaAuthor.text.toString())
                }
-                .launchIn(scope)
+                .launchIn(controller.viewScope)

            binding.mangaArtist.longClicks()
                .onEach {
@ -168,13 +164,13 @@ class MangaInfoHeaderAdapter(
                        binding.mangaArtist.text.toString()
                    )
                }
-                .launchIn(scope)
+                .launchIn(controller.viewScope)

            binding.mangaArtist.clicks()
                .onEach {
                    controller.performGlobalSearch(binding.mangaArtist.text.toString())
                }
-                .launchIn(scope)
+                .launchIn(controller.viewScope)

            binding.mangaSummaryText.longClicks()
                .onEach {
@ -183,7 +179,7 @@ class MangaInfoHeaderAdapter(
                        binding.mangaSummaryText.text.toString()
                    )
                }
-                .launchIn(scope)
+                .launchIn(controller.viewScope)

            binding.mangaCover.longClicks()
                .onEach {
@ -192,7 +188,7 @@ class MangaInfoHeaderAdapter(
                        controller.presenter.manga.title
                    )
                }
-                .launchIn(scope)
+                .launchIn(controller.viewScope)

            setMangaInfo(manga, source)
        }
@ -300,7 +296,7 @@ class MangaInfoHeaderAdapter(
                    binding.mangaInfoToggleLess.clicks()
                )
                    .onEach { toggleMangaInfo() }
-                    .launchIn(scope)
+                    .launchIn(controller.viewScope)

                // Expand manga info if navigated from source listing
                if (initialLoad && fromSource) {
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/ViewerConfig.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/ViewerConfig.kt
@ -4,8 +4,6 @@ import com.tfcporciuncula.flow.Preference
 import eu.kanade.tachiyomi.data.preference.PreferenceValues.TappingInvertMode
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
 import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
@ -13,9 +11,7 @@ import kotlinx.coroutines.flow.onEach
 /**
 * Common configuration for all viewers.
 */
-abstract class ViewerConfig(preferences: PreferencesHelper) {
-
-    private val scope = CoroutineScope(Job() + Dispatchers.Main)
+abstract class ViewerConfig(preferences: PreferencesHelper, private val scope: CoroutineScope) {

    var imagePropertyChangedListener: (() -> Unit)? = null

--- a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PagerConfig.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PagerConfig.kt
@ -6,14 +6,18 @@ import eu.kanade.tachiyomi.ui.reader.viewer.ViewerNavigation
 import eu.kanade.tachiyomi.ui.reader.viewer.navigation.EdgeNavigation
 import eu.kanade.tachiyomi.ui.reader.viewer.navigation.KindlishNavigation
 import eu.kanade.tachiyomi.ui.reader.viewer.navigation.LNavigation
+import kotlinx.coroutines.CoroutineScope
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get

 /**
 * Configuration used by pager viewers.
 */
-class PagerConfig(private val viewer: PagerViewer, preferences: PreferencesHelper = Injekt.get()) :
-    ViewerConfig(preferences) {
+class PagerConfig(
+    private val viewer: PagerViewer,
+    scope: CoroutineScope,
+    preferences: PreferencesHelper = Injekt.get()
+) : ViewerConfig(preferences, scope) {

    var imageScaleType = 1
        private set
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PagerViewer.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PagerViewer.kt
@ -16,6 +16,8 @@ import eu.kanade.tachiyomi.ui.reader.model.ReaderPage
 import eu.kanade.tachiyomi.ui.reader.model.ViewerChapters
 import eu.kanade.tachiyomi.ui.reader.viewer.BaseViewer
 import eu.kanade.tachiyomi.ui.reader.viewer.ViewerNavigation
+import kotlinx.coroutines.MainScope
+import kotlinx.coroutines.cancel
 import timber.log.Timber
 import kotlin.math.min

@ -25,6 +27,8 @@ import kotlin.math.min
@Suppress("LeakingThis")
 abstract class PagerViewer(val activity: ReaderActivity) : BaseViewer {

+    private val scope = MainScope()
+
    /**
     * View pager used by this viewer. It's abstract to implement L2R, R2L and vertical pagers on
     * top of this class.
@ -34,7 +38,7 @@ abstract class PagerViewer(val activity: ReaderActivity) : BaseViewer {
    /**
     * Configuration used by the pager, like allow taps, scale mode on images, page transitions...
     */
-    val config = PagerConfig(this)
+    val config = PagerConfig(this, scope)

    /**
     * Adapter of the pager.
@ -114,6 +118,11 @@ abstract class PagerViewer(val activity: ReaderActivity) : BaseViewer {
        }
    }

+    override fun destroy() {
+        super.destroy()
+        scope.cancel()
+    }
+
    /**
     * Creates a new ViewPager.
     */
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonConfig.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonConfig.kt
@ -6,13 +6,17 @@ import eu.kanade.tachiyomi.ui.reader.viewer.ViewerNavigation
 import eu.kanade.tachiyomi.ui.reader.viewer.navigation.EdgeNavigation
 import eu.kanade.tachiyomi.ui.reader.viewer.navigation.KindlishNavigation
 import eu.kanade.tachiyomi.ui.reader.viewer.navigation.LNavigation
+import kotlinx.coroutines.CoroutineScope
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get

 /**
 * Configuration used by webtoon viewers.
 */
-class WebtoonConfig(preferences: PreferencesHelper = Injekt.get()) : ViewerConfig(preferences) {
+class WebtoonConfig(
+    scope: CoroutineScope,
+    preferences: PreferencesHelper = Injekt.get()
+) : ViewerConfig(preferences, scope) {

    var imageCropBorders = false
        private set
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonViewer.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonViewer.kt
@ -16,6 +16,8 @@ import eu.kanade.tachiyomi.ui.reader.model.ReaderPage
 import eu.kanade.tachiyomi.ui.reader.model.ViewerChapters
 import eu.kanade.tachiyomi.ui.reader.viewer.BaseViewer
 import eu.kanade.tachiyomi.ui.reader.viewer.ViewerNavigation
+import kotlinx.coroutines.MainScope
+import kotlinx.coroutines.cancel
 import rx.subscriptions.CompositeSubscription
 import timber.log.Timber
 import kotlin.math.max
@ -26,6 +28,8 @@ import kotlin.math.min
 */
 class WebtoonViewer(val activity: ReaderActivity, val isContinuous: Boolean = true) : BaseViewer {

+    private val scope = MainScope()
+
    /**
     * Recycler view used by this viewer.
     */
@ -59,7 +63,7 @@ class WebtoonViewer(val activity: ReaderActivity, val isContinuous: Boolean = tr
    /**
     * Configuration used by this viewer, like allow taps, or crop image borders.
     */
-    val config = WebtoonConfig()
+    val config = WebtoonConfig(scope)

    /**
     * Subscriptions to keep while this viewer is used.
@ -168,6 +172,7 @@ class WebtoonViewer(val activity: ReaderActivity, val isContinuous: Boolean = tr
     */
    override fun destroy() {
        super.destroy()
+        scope.cancel()
        subscriptions.unsubscribe()
    }

--- a/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsBackupController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsBackupController.kt
@ -133,14 +133,14 @@ class SettingsBackupController : SettingsController() {
                }

                preferences.backupInterval().asImmediateFlow { isVisible = it > 0 }
-                    .launchIn(scope)
+                    .launchIn(viewScope)

                preferences.backupsDirectory().asFlow()
                    .onEach { path ->
                        val dir = UniFile.fromUri(context, path.toUri())
                        summary = dir.filePath + "/automatic"
                    }
-                    .launchIn(scope)
+                    .launchIn(viewScope)
            }
            intListPreference {
                key = Keys.numberOfBackups
@ -151,7 +151,7 @@ class SettingsBackupController : SettingsController() {
                summary = "%s"

                preferences.backupInterval().asImmediateFlow { isVisible = it > 0 }
-                    .launchIn(scope)
+                    .launchIn(viewScope)
            }
            switchPreference {
                key = Keys.createLegacyBackup
@ -159,7 +159,7 @@ class SettingsBackupController : SettingsController() {
                defaultValue = true

                preferences.backupInterval().asImmediateFlow { isVisible = it > 0 }
-                    .launchIn(scope)
+                    .launchIn(viewScope)
            }
        }
    }
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsBrowseController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsBrowseController.kt
@ -64,7 +64,7 @@ class SettingsBrowseController : SettingsController() {
                titleRes = R.string.pref_label_nsfw_extension
                defaultValue = true

-                preferences.showNsfwExtension().asImmediateFlow { isVisible = it }.launchIn(scope)
+                preferences.showNsfwExtension().asImmediateFlow { isVisible = it }.launchIn(viewScope)
            }

            infoPreference(R.string.parental_controls_info)
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsController.kt
@ -22,9 +22,7 @@ import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.ui.base.controller.BaseController
 import eu.kanade.tachiyomi.ui.base.controller.RootController
 import eu.kanade.tachiyomi.util.system.getResourceColor
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
+import kotlinx.coroutines.MainScope
 import rx.Observable
 import rx.Subscription
 import rx.subscriptions.CompositeSubscription
@ -35,7 +33,7 @@ abstract class SettingsController : PreferenceController() {

    var preferenceKey: String? = null
    val preferences: PreferencesHelper = Injekt.get()
-    val scope = CoroutineScope(Job() + Dispatchers.Main)
+    val viewScope = MainScope()

    var untilDestroySubscriptions = CompositeSubscription()
        private set
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsDownloadController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsDownloadController.kt
@ -57,7 +57,7 @@ class SettingsDownloadController : SettingsController() {
                    val dir = UniFile.fromUri(context, path.toUri())
                    summary = dir.filePath ?: path
                }
-                .launchIn(scope)
+                .launchIn(viewScope)
        }
        switchPreference {
            key = Keys.downloadOnlyOverWifi
@ -112,7 +112,7 @@ class SettingsDownloadController : SettingsController() {
                entryValues = categories.map { it.id.toString() }.toTypedArray()

                preferences.downloadNew().asImmediateFlow { isVisible = it }
-                    .launchIn(scope)
+                    .launchIn(viewScope)

                preferences.downloadNewCategories().asFlow()
                    .onEach { mutableSet ->
@ -126,7 +126,7 @@ class SettingsDownloadController : SettingsController() {
                            selectedCategories.joinToString { it.name }
                        }
                    }
-                    .launchIn(scope)
+                    .launchIn(viewScope)
            }
        }
    }
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsGeneralController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsGeneralController.kt
@ -116,7 +116,7 @@ class SettingsGeneralController : SettingsController() {
                summary = "%s"

                preferences.themeMode().asImmediateFlow { isVisible = it != Values.ThemeMode.dark }
-                    .launchIn(scope)
+                    .launchIn(viewScope)

                onChange {
                    if (preferences.themeMode().get() != Values.ThemeMode.dark) {
@ -142,7 +142,7 @@ class SettingsGeneralController : SettingsController() {
                summary = "%s"

                preferences.themeMode().asImmediateFlow { isVisible = it != Values.ThemeMode.light }
-                    .launchIn(scope)
+                    .launchIn(viewScope)

                onChange {
                    if (preferences.themeMode().get() != Values.ThemeMode.light) {
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsLibraryController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsLibraryController.kt
@ -70,7 +70,7 @@ class SettingsLibraryController : SettingsController() {
                        summary = "${context.getString(R.string.portrait)}: $portrait, " +
                            "${context.getString(R.string.landscape)}: $landscape"
                    }
-                    .launchIn(scope)
+                    .launchIn(viewScope)
            }
            switchPreference {
                key = Keys.jumpToChapters
@ -150,7 +150,7 @@ class SettingsLibraryController : SettingsController() {
                defaultValue = setOf("wifi")

                preferences.libraryUpdateInterval().asImmediateFlow { isVisible = it > 0 }
-                    .launchIn(scope)
+                    .launchIn(viewScope)

                onChange {
                    // Post to event looper to allow the preference to be updated.
@ -180,7 +180,7 @@ class SettingsLibraryController : SettingsController() {
                            selectedCategories.joinToString { it.name }
                        }
                    }
-                    .launchIn(scope)
+                    .launchIn(viewScope)
            }
            intListPreference {
                key = Keys.libraryUpdatePrioritization
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsReaderController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsReaderController.kt
@ -150,7 +150,7 @@ class SettingsReaderController : SettingsController() {
                defaultValue = "0"
                summary = "%s"

-                preferences.readWithTapping().asImmediateFlow { isVisible = it }.launchIn(scope)
+                preferences.readWithTapping().asImmediateFlow { isVisible = it }.launchIn(viewScope)
            }
            listPreference {
                key = Keys.pagerNavInverted
@ -170,7 +170,7 @@ class SettingsReaderController : SettingsController() {
                defaultValue = TappingInvertMode.NONE.name
                summary = "%s"

-                preferences.readWithTapping().asImmediateFlow { isVisible = it }.launchIn(scope)
+                preferences.readWithTapping().asImmediateFlow { isVisible = it }.launchIn(viewScope)
            }
            intListPreference {
                key = Keys.imageScaleType
@ -223,7 +223,7 @@ class SettingsReaderController : SettingsController() {
                defaultValue = "0"
                summary = "%s"

-                preferences.readWithTapping().asImmediateFlow { isVisible = it }.launchIn(scope)
+                preferences.readWithTapping().asImmediateFlow { isVisible = it }.launchIn(viewScope)
            }
            listPreference {
                key = Keys.webtoonNavInverted
@ -243,7 +243,7 @@ class SettingsReaderController : SettingsController() {
                defaultValue = TappingInvertMode.NONE.name
                summary = "%s"

-                preferences.readWithTapping().asImmediateFlow { isVisible = it }.launchIn(scope)
+                preferences.readWithTapping().asImmediateFlow { isVisible = it }.launchIn(viewScope)
            }
            intListPreference {
                key = Keys.webtoonSidePadding
@ -289,7 +289,7 @@ class SettingsReaderController : SettingsController() {
                titleRes = R.string.pref_read_with_volume_keys_inverted
                defaultValue = false

-                preferences.readWithVolumeKeys().asImmediateFlow { isVisible = it }.launchIn(scope)
+                preferences.readWithVolumeKeys().asImmediateFlow { isVisible = it }.launchIn(viewScope)
            }
        }
    }
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsSecurityController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsSecurityController.kt
@ -39,7 +39,7 @@ class SettingsSecurityController : SettingsController() {
                summary = "%s"

                preferences.useBiometricLock().asImmediateFlow { isVisible = it }
-                    .launchIn(scope)
+                    .launchIn(viewScope)
            }
        }

--- a/app/src/main/java/eu/kanade/tachiyomi/widget/DialogCustomDownloadView.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/widget/DialogCustomDownloadView.kt
@ -7,9 +7,7 @@ import android.view.LayoutInflater
 import android.view.View
 import android.widget.LinearLayout
 import eu.kanade.tachiyomi.databinding.DownloadCustomAmountBinding
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
+import kotlinx.coroutines.MainScope
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import reactivecircus.flowbinding.android.widget.textChanges
@ -37,7 +35,7 @@ class DialogCustomDownloadView @JvmOverloads constructor(context: Context, attrs
     */
    private var max = 0

-    private val scope = CoroutineScope(Job() + Dispatchers.Main)
+    private val scope = MainScope()

    private val binding: DownloadCustomAmountBinding