diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/BrowseController.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/BrowseController.kt
index 57d0464bd..db966a429 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/BrowseController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/BrowseController.kt
@@ -24,7 +24,7 @@ import eu.kanade.tachiyomi.ui.browse.extension.ExtensionController
 import eu.kanade.tachiyomi.ui.browse.latest.LatestController
 import eu.kanade.tachiyomi.ui.browse.migration.sources.MigrationSourcesController
 import eu.kanade.tachiyomi.ui.browse.source.SourceController
-import kotlinx.android.synthetic.main.main_activity.tabs
+import eu.kanade.tachiyomi.ui.main.MainActivity
 import uy.kohesive.injekt.injectLazy
 
 class BrowseController :
@@ -75,7 +75,7 @@ class BrowseController :
     override fun onChangeStarted(handler: ControllerChangeHandler, type: ControllerChangeType) {
         super.onChangeStarted(handler, type)
         if (type.isEnter) {
-            activity?.tabs?.apply {
+            (activity as? MainActivity)?.binding?.tabs?.apply {
                 setupWithViewPager(binding.pager)
 
                 // Show badge on tab for extension updates
@@ -97,7 +97,7 @@ class BrowseController :
     }
 
     fun setExtensionUpdateBadge() {
-        activity?.tabs?.apply {
+        (activity as? MainActivity)?.binding?.tabs?.apply {
             val updates = preferences.extensionUpdatesCount().get()
             if (updates > 0) {
                 // SY -->
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourceController.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourceController.kt
index 548bf1f9d..1bbea5d26 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourceController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourceController.kt
@@ -44,6 +44,7 @@ import eu.kanade.tachiyomi.ui.browse.extension.details.SourcePreferencesControll
 import eu.kanade.tachiyomi.ui.browse.source.SourceController
 import eu.kanade.tachiyomi.ui.browse.source.browse.SourceFilterSheet.FilterNavigationView.Companion.MAX_SAVED_SEARCHES
 import eu.kanade.tachiyomi.ui.library.ChangeMangaCategoriesDialog
+import eu.kanade.tachiyomi.ui.main.MainActivity
 import eu.kanade.tachiyomi.ui.manga.MangaController
 import eu.kanade.tachiyomi.ui.webview.WebViewActivity
 import eu.kanade.tachiyomi.util.system.connectivityManager
@@ -58,7 +59,6 @@ import exh.isEhBasedSource
 import exh.md.similar.ui.EnableMangaDexSimilarDialogController
 import exh.savedsearches.EXHSavedSearch
 import exh.source.getMainSource
-import kotlinx.android.synthetic.main.main_activity.root_coordinator
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.flow.drop
 import kotlinx.coroutines.flow.filter
@@ -574,7 +574,7 @@ open class BrowseSourceController(bundle: Bundle) :
 
             binding.emptyView.show(message, actions)
         } else {
-            snack = activity!!.root_coordinator?.snack(message, Snackbar.LENGTH_INDEFINITE) {
+            snack = (activity as? MainActivity)?.binding?.rootCoordinator?.snack(message, Snackbar.LENGTH_INDEFINITE) {
                 setAction(R.string.action_retry, retryAction)
             }
         }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/category/CategoryController.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/category/CategoryController.kt
index 149460dc8..fc34bd68e 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/category/CategoryController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/category/CategoryController.kt
@@ -20,9 +20,9 @@ import eu.kanade.tachiyomi.databinding.CategoriesControllerBinding
 import eu.kanade.tachiyomi.ui.base.controller.FabController
 import eu.kanade.tachiyomi.ui.base.controller.NucleusController
 import eu.kanade.tachiyomi.ui.base.controller.applyBottomInsetPadding
+import eu.kanade.tachiyomi.ui.main.MainActivity
 import eu.kanade.tachiyomi.util.system.toast
 import eu.kanade.tachiyomi.util.view.shrinkOnScroll
-import kotlinx.android.synthetic.main.main_activity.root_coordinator
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import reactivecircus.flowbinding.android.view.clicks
@@ -201,7 +201,7 @@ class CategoryController :
                 undoHelper = UndoHelper(adapter, this)
                 undoHelper?.start(
                     adapter.selectedPositions,
-                    activity!!.root_coordinator,
+                    (activity as? MainActivity)?.binding?.rootCoordinator!!,
                     R.string.snack_categories_deleted,
                     R.string.action_undo,
                     3000
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/category/biometric/BiometricTimesController.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/category/biometric/BiometricTimesController.kt
index 84c5be808..25509bd78 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/category/biometric/BiometricTimesController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/category/biometric/BiometricTimesController.kt
@@ -18,9 +18,9 @@ import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.databinding.CategoriesControllerBinding
 import eu.kanade.tachiyomi.ui.base.controller.FabController
 import eu.kanade.tachiyomi.ui.base.controller.NucleusController
+import eu.kanade.tachiyomi.ui.main.MainActivity
 import eu.kanade.tachiyomi.util.system.toast
 import eu.kanade.tachiyomi.util.view.shrinkOnScroll
-import kotlinx.android.synthetic.main.main_activity.root_coordinator
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import reactivecircus.flowbinding.android.view.clicks
@@ -198,7 +198,7 @@ class BiometricTimesController :
                 undoHelper = UndoHelper(adapter, this)
                 undoHelper?.start(
                     adapter.selectedPositions,
-                    activity!!.root_coordinator,
+                    (activity as? MainActivity)?.binding?.rootCoordinator!!,
                     R.string.biometric_lock_time_deleted_snack,
                     R.string.action_undo,
                     3000
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/category/genre/SortTagController.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/category/genre/SortTagController.kt
index 6929739f9..b288e35aa 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/category/genre/SortTagController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/category/genre/SortTagController.kt
@@ -20,9 +20,9 @@ import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.databinding.CategoriesControllerBinding
 import eu.kanade.tachiyomi.ui.base.controller.FabController
 import eu.kanade.tachiyomi.ui.base.controller.NucleusController
+import eu.kanade.tachiyomi.ui.main.MainActivity
 import eu.kanade.tachiyomi.util.system.toast
 import eu.kanade.tachiyomi.util.view.shrinkOnScroll
-import kotlinx.android.synthetic.main.main_activity.root_coordinator
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import reactivecircus.flowbinding.android.view.clicks
@@ -224,7 +224,7 @@ class SortTagController :
                 undoHelper = UndoHelper(adapter, this)
                 undoHelper?.start(
                     adapter.selectedPositions,
-                    activity!!.root_coordinator,
+                    (activity as? MainActivity)?.binding?.rootCoordinator!!,
                     R.string.snack_tags_deleted,
                     R.string.action_undo,
                     3000
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/category/sources/SourceCategoryController.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/category/sources/SourceCategoryController.kt
index 324e3ed77..98002e27e 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/category/sources/SourceCategoryController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/category/sources/SourceCategoryController.kt
@@ -18,9 +18,9 @@ import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.databinding.CategoriesControllerBinding
 import eu.kanade.tachiyomi.ui.base.controller.FabController
 import eu.kanade.tachiyomi.ui.base.controller.NucleusController
+import eu.kanade.tachiyomi.ui.main.MainActivity
 import eu.kanade.tachiyomi.util.system.toast
 import eu.kanade.tachiyomi.util.view.shrinkOnScroll
-import kotlinx.android.synthetic.main.main_activity.root_coordinator
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import reactivecircus.flowbinding.android.view.clicks
@@ -196,7 +196,7 @@ class SourceCategoryController :
                 undoHelper = UndoHelper(adapter, this)
                 undoHelper?.start(
                     adapter.selectedPositions,
-                    activity!!.root_coordinator,
+                    (activity as? MainActivity)?.binding?.rootCoordinator!!,
                     R.string.snack_categories_deleted,
                     R.string.action_undo,
                     3000
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryController.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryController.kt
index c21cec209..401977e15 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryController.kt
@@ -51,7 +51,6 @@ import exh.favorites.FavoritesSyncStatus
 import exh.mangaDexSourceIds
 import exh.nHentaiSourceIds
 import exh.ui.LoaderManager
-import kotlinx.android.synthetic.main.main_activity.tabs
 import kotlinx.coroutines.flow.drop
 import kotlinx.coroutines.flow.filter
 import kotlinx.coroutines.flow.launchIn
@@ -239,7 +238,7 @@ class LibraryController(
     override fun onChangeStarted(handler: ControllerChangeHandler, type: ControllerChangeType) {
         super.onChangeStarted(handler, type)
         if (type.isEnter) {
-            activity?.tabs?.setupWithViewPager(binding.libraryPager)
+            (activity as? MainActivity)?.binding?.tabs?.setupWithViewPager(binding.libraryPager)
             presenter.subscribeLibrary()
         }
     }
@@ -310,7 +309,7 @@ class LibraryController(
         // Delay the scroll position to allow the view to be properly measured.
         view.post {
             if (isAttached) {
-                activity?.tabs?.setScrollPosition(binding.libraryPager.currentItem, 0f, true)
+                (activity as? MainActivity)?.binding?.tabs?.setScrollPosition(binding.libraryPager.currentItem, 0f, true)
             }
         }
 
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaController.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaController.kt
index de04f221f..4a0598a4c 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaController.kt
@@ -104,8 +104,6 @@ import exh.md.similar.ui.MangaDexSimilarController
 import exh.metadata.metadata.base.FlatMetadata
 import exh.recs.RecommendsController
 import exh.source.getMainSource
-import kotlinx.android.synthetic.main.main_activity.root_coordinator
-import kotlinx.android.synthetic.main.main_activity.toolbar
 import kotlinx.coroutines.CancellationException
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.NonCancellable
@@ -367,7 +365,7 @@ class MangaController :
             else -> min(binding.recycler.computeVerticalScrollOffset(), 255)
         }
 
-        activity?.toolbar?.setTitleTextColor(
+        (activity as? MainActivity)?.binding?.toolbar?.setTitleTextColor(
             Color.argb(
                 calculatedAlpha,
                 toolbarTextColor.red,
@@ -786,7 +784,7 @@ class MangaController :
     private fun toggleFavorite() {
         val isNowFavorite = presenter.toggleFavorite()
         if (activity != null && !isNowFavorite && presenter.hasDownloads()) {
-            activity!!.root_coordinator?.snack(activity!!.getString(R.string.delete_downloads_for_manga)) {
+            (activity as? MainActivity)?.binding?.rootCoordinator?.snack(activity!!.getString(R.string.delete_downloads_for_manga)) {
                 setAction(R.string.action_delete) {
                     presenter.deleteDownloads()
                 }
@@ -1315,7 +1313,7 @@ class MangaController :
         val manga = presenter.manga
         presenter.downloadChapters(chapters)
         if (view != null && !manga.favorite) {
-            addSnackbar = activity!!.root_coordinator?.snack(view.context.getString(R.string.snack_add_to_library), Snackbar.LENGTH_INDEFINITE) {
+            addSnackbar = (activity as? MainActivity)?.binding?.rootCoordinator?.snack(view.context.getString(R.string.snack_add_to_library), Snackbar.LENGTH_INDEFINITE) {
                 setAction(R.string.action_add) {
                     addToLibrary(manga)
                 }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsLibraryController.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsLibraryController.kt
index d5a31e0a0..007fdc719 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsLibraryController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsLibraryController.kt
@@ -31,8 +31,7 @@ import eu.kanade.tachiyomi.util.preference.preferenceCategory
 import eu.kanade.tachiyomi.util.preference.summaryRes
 import eu.kanade.tachiyomi.util.preference.switchPreference
 import eu.kanade.tachiyomi.util.preference.titleRes
-import kotlinx.android.synthetic.main.pref_library_columns.view.landscape_columns
-import kotlinx.android.synthetic.main.pref_library_columns.view.portrait_columns
+import eu.kanade.tachiyomi.widget.MinMaxNumberPicker
 import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
@@ -316,7 +315,7 @@ class SettingsLibraryController : SettingsController() {
         }
 
         fun onViewCreated(view: View) {
-            with(view.portrait_columns) {
+            with(view.findViewById(R.id.portrait_columns) as MinMaxNumberPicker) {
                 displayedValues = arrayOf(context.getString(R.string.default_columns)) +
                     IntRange(1, 10).map(Int::toString)
                 value = portrait
@@ -325,7 +324,7 @@ class SettingsLibraryController : SettingsController() {
                     portrait = newValue
                 }
             }
-            with(view.landscape_columns) {
+            with(view.findViewById(R.id.landscape_columns) as MinMaxNumberPicker) {
                 displayedValues = arrayOf(context.getString(R.string.default_columns)) +
                     IntRange(1, 10).map(Int::toString)
                 value = landscape
diff --git a/app/src/main/java/eu/kanade/tachiyomi/widget/preference/LoginPreference.kt b/app/src/main/java/eu/kanade/tachiyomi/widget/preference/LoginPreference.kt
index 32ca1d720..eea07d977 100755
--- a/app/src/main/java/eu/kanade/tachiyomi/widget/preference/LoginPreference.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/widget/preference/LoginPreference.kt
@@ -2,10 +2,10 @@ package eu.kanade.tachiyomi.widget.preference
 
 import android.content.Context
 import android.util.AttributeSet
+import android.widget.ImageView
 import androidx.preference.Preference
 import androidx.preference.PreferenceViewHolder
 import eu.kanade.tachiyomi.R
-import kotlinx.android.synthetic.main.pref_widget_imageview.view.image_view
 
 class LoginPreference @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null) :
     Preference(context, attrs) {
@@ -17,7 +17,7 @@ class LoginPreference @JvmOverloads constructor(context: Context, attrs: Attribu
     override fun onBindViewHolder(holder: PreferenceViewHolder) {
         super.onBindViewHolder(holder)
 
-        holder.itemView.image_view.setImageResource(
+        (holder.findViewById(R.id.image_view) as ImageView).setImageResource(
             if (getPersistedString("").isNullOrEmpty()) {
                 android.R.color.transparent
             } else {
diff --git a/app/src/main/java/eu/kanade/tachiyomi/widget/preference/SwitchSettingsPreference.kt b/app/src/main/java/eu/kanade/tachiyomi/widget/preference/SwitchSettingsPreference.kt
index f5e746af5..b0b905f78 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/widget/preference/SwitchSettingsPreference.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/widget/preference/SwitchSettingsPreference.kt
@@ -6,7 +6,6 @@ import android.view.View
 import androidx.preference.PreferenceViewHolder
 import androidx.preference.SwitchPreferenceCompat
 import eu.kanade.tachiyomi.R
-import kotlinx.android.synthetic.main.pref_settings.view.button
 
 class SwitchSettingsPreference @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null) :
     SwitchPreferenceCompat(context, attrs) {
@@ -20,7 +19,7 @@ class SwitchSettingsPreference @JvmOverloads constructor(context: Context, attrs
     override fun onBindViewHolder(holder: PreferenceViewHolder) {
         super.onBindViewHolder(holder)
 
-        holder.itemView.button.setOnClickListener {
+        holder.findViewById(R.id.button).setOnClickListener {
             onSettingsClick?.onClick(it)
         }
     }