Added app theme toggle

app/src/main/java/com/github/libretube/Settings.kt

@@ -13,12 +13,14 @@ import android.util.Log
 import android.widget.Toast
 import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.contract.ActivityResultContracts
+import androidx.appcompat.app.AppCompatDelegate
 import androidx.core.app.ActivityCompat
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.lifecycleScope
 import androidx.preference.ListPreference
 import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
+import androidx.preference.SwitchPreferenceCompat
 import com.blankj.utilcode.util.UriUtils
 import com.github.libretube.obj.Subscribe
 import retrofit2.HttpException
@@ -100,7 +102,6 @@ class Settings : PreferenceFragmentCompat() {
         importFromYt?.setOnPreferenceClickListener {
 
             //check StorageAccess
-
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
                 Log.d("myz", "" + Build.VERSION.SDK_INT)
                 if (!Environment.isExternalStorageManager()) {
@@ -137,6 +138,16 @@ class Settings : PreferenceFragmentCompat() {
             true
         }
 
+        val themeToggle = findPreference<ListPreference>("theme_togglee")
+        themeToggle?.setOnPreferenceChangeListener { _, newValue ->
+            when (newValue.toString()) {
+                "A" -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM)
+                "L" -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO)
+                "D" -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES)
+            }
+            true
+        }
+
     }
 
     private fun fetchInstance() {

app/src/main/res/values/array.xml

@@ -404,4 +404,17 @@
         <item>ZM</item>
         <item>ZW</item>
     </string-array>
+
+    <string-array name="themes">
+        <item>System Default</item>
+        <item>Light Theme</item>
+        <item>Dark Theme</item>
+    </string-array>
+
+    <string-array name="themesValue">
+        <item>A</item>
+        <item>L</item>
+        <item>D</item>
+    </string-array>
+
 </resources>

app/src/main/res/values/strings.xml

@@ -30,6 +30,6 @@
     <string name="vlc">Open in VLC</string>
     <string name="vlcerror">Can\'t open in VLC. Maybe it\'s not installed yet?</string>
     <string name="import_from_yt">Import subscriptions from youtube</string>
-    <string name="dark_theme">Dark theme</string>
+    <string name="app_theme">App theme</string>
 
 </resources>

app/src/main/res/xml/settings.xml

@@ -37,4 +37,22 @@
         />
 
 
+<!--    <ListPreference-->
+<!--        app:key="theme_toggleee"-->
+<!--        app:title="@string/region"-->
+<!--        app:entries="@array/regions"-->
+<!--        app:entryValues="@array/regionsValue"-->
+<!--        app:defaultValue="US"-->
+<!--        app:useSimpleSummaryProvider="true"-->
+<!--        />-->
+
+    <ListPreference
+        app:title="@string/app_theme"
+        app:key="theme_togglee"
+        app:entries="@array/themes"
+        app:entryValues="@array/themesValue"
+        app:defaultValue="A"
+        />
+
+
 </androidx.preference.PreferenceScreen>