Add darkmode

Author: Omware

app/src/main/java/com/example/mynotes/ui/fragments/NotesFragment.kt

@@ -71,18 +71,18 @@ class NotesFragment : Fragment() {
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
 
         return when (item.itemId) {
-//            R.id.mode -> {
-//                val mode =
-//                    if ((resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK) == Configuration.UI_MODE_NIGHT_NO) {
-//                        AppCompatDelegate.MODE_NIGHT_YES
-//                    } else {
-//                        AppCompatDelegate.MODE_NIGHT_AUTO_BATTERY
-//                    }
-//
-//                // Change UI Mode
-//                AppCompatDelegate.setDefaultNightMode(mode)
-//                true
-//            }
+            R.id.mode -> {
+                val mode =
+                    if ((resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK) == Configuration.UI_MODE_NIGHT_NO) {
+                        AppCompatDelegate.MODE_NIGHT_YES
+                    } else {
+                        AppCompatDelegate.MODE_NIGHT_AUTO_BATTERY
+                    }
+
+                // Change UI Mode
+                AppCompatDelegate.setDefaultNightMode(mode)
+                true
+            }
 
             R.id.delete -> {
                 deleteAllNotes()

app/src/main/res/layout/fragment_notes.xml

@@ -4,6 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools">
 
     <androidx.constraintlayout.widget.ConstraintLayout
+        android:configChanges="uiMode"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         tools:context=".ui.fragments.NotesFragment">