[DO NOT USE] Migrate to datastore backend

app/src/main/java/com/hippo/ehviewer/EhApplication.kt

@@ -46,6 +46,7 @@ import com.hippo.ehviewer.yorozuya.FileUtils
 import eu.kanade.tachiyomi.core.preference.AndroidPreferenceStore
 import eu.kanade.tachiyomi.ui.reader.setting.ReaderPreferences
 import eu.kanade.tachiyomi.util.lang.launchIO
+import eu.kanade.tachiyomi.util.lang.withUIContext
 import kotlinx.coroutines.DelicateCoroutinesApi
 import okio.Path.Companion.toOkioPath
 import splitties.arch.room.roomDb
@@ -69,7 +70,12 @@ class EhApplication : Application(), ImageLoaderFactory {
         super.onCreate()
         System.loadLibrary("ehviewer")
         ReadableTime.initialize(this)
-        AppCompatDelegate.setDefaultNightMode(Settings.theme)
+        launchIO {
+            val theme = Settings.theme
+            withUIContext {
+                AppCompatDelegate.setDefaultNightMode(theme)
+            }
+        }
         launchIO {
             launchIO {
                 EhTagDatabase.update()

app/src/main/java/com/hippo/ehviewer/Settings.kt

@@ -3,12 +3,14 @@
 package com.hippo.ehviewer
 
 import com.hippo.ehviewer.client.data.FavListUrlBuilder
-import splitties.preferences.DefaultPreferences
+import splitties.preferences.DataStorePreferences
+import splitties.preferences.DataStorePreferencesPreview
 import splitties.preferences.edit
 import java.util.Locale
 import kotlin.reflect.KProperty
 
-object Settings : DefaultPreferences() {
+@OptIn(DataStorePreferencesPreview::class)
+object Settings : DataStorePreferences(null) {
     const val KEY_THEME = "theme"
     const val KEY_ACCOUNT = "account"
     const val KEY_IMAGE_LIMITS = "image_limits"