update

app/src/main/java/io/legado/app/App.kt

@@ -51,12 +51,13 @@ class App : Application() {
             .autoClear(false)
     }
 
-    fun initNightTheme() {//对整个应用生效，不要手动调用recreate
-        if (getPrefBoolean("isNightTheme")) {
-            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES)
+    fun initNightTheme() {
+        val targetMode = if (getPrefBoolean("isNightTheme")) {
+            AppCompatDelegate.MODE_NIGHT_YES
         } else {
-            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO)
+            AppCompatDelegate.MODE_NIGHT_NO
         }
+        AppCompatDelegate.setDefaultNightMode(targetMode)
     }
 
     /**

app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt

@@ -40,8 +40,7 @@ class ThemeConfigFragment : PreferenceFragmentCompat(), SharedPreferences.OnShar
         sharedPreferences ?: return
         when (key) {
             "transparentStatusBar" -> {
-                postEvent(Bus.RECREATE, "")
-                Handler().postDelayed({ activity?.recreate() }, 100)
+                recreateActivities()
             }
             "colorPrimary", "colorAccent", "colorBackground" -> {
                 if (backgroundIsDark(sharedPreferences)) {
@@ -104,6 +103,7 @@ class ThemeConfigFragment : PreferenceFragmentCompat(), SharedPreferences.OnShar
                                 .putInt("colorBackgroundNight", App.INSTANCE.getCompatColor(R.color.md_grey_800))
                                 .apply()
                             App.INSTANCE.upThemeStore()
+                            recreateActivities()
                         }
                         .setNegativeButton(R.string.cancel, null)
                         .show().upTint()
@@ -134,7 +134,12 @@ class ThemeConfigFragment : PreferenceFragmentCompat(), SharedPreferences.OnShar
     private fun upTheme(isNightTheme: Boolean) {
         if (App.INSTANCE.getPrefBoolean("isNightTheme") == isNightTheme) {
             App.INSTANCE.upThemeStore()
+            recreateActivities()
         }
     }
 
+    private fun recreateActivities() {
+        postEvent(Bus.RECREATE, "")
+        Handler().postDelayed({ activity?.recreate() }, 100L)
+    }
 }