Initial Work for Settings Page with Jetpack Compose

- Implemented a new settings page using Jetpack Compose.
- Added a new settings option to enable the redesigned settings page.
- This option allows for gradual integration and testing of the new
  settings page, minimizing disruptions to current functionality.

Plan for Settings Items:
- Jetpack Compose does not have a direct equivalent to the
  Preference/settings library.
- We could consider using third-party libraries that offer preference
  items as composables.
- However, these libraries may be incomplete or lack active development.
- Given our specific needs for only a subset of preference types,
  creating custom composables would be beneficial.
- This approach allows for fine-tuning the components to our specific
  use case.

Next Steps:
- Continue development by adding more composables for settings
  functionalities and screens.

app/src/main/AndroidManifest.xml

@@ -77,6 +77,11 @@
             android:exported="false"
             android:label="@string/settings" />
 
+        <activity
+            android:name=".settings.SettingsV2Activity"
+            android:exported="true"
+            android:label="@string/settings" />
+
         <activity
             android:name=".about.AboutActivity"
             android:exported="false"

app/src/main/java/org/schabi/newpipe/settings/SettingsV2Activity.kt

@@ -0,0 +1,37 @@
+package org.schabi.newpipe.settings
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
+import org.schabi.newpipe.R
+import org.schabi.newpipe.ui.Toolbar
+import org.schabi.newpipe.ui.theme.AppTheme
+
+class SettingsV2Activity : ComponentActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        setContent {
+            AppTheme {
+                Scaffold(topBar = {
+                    Toolbar(
+                        title = stringResource(id = R.string.settings),
+                        hasSearch = true,
+                        onSearchQueryChange = null // TODO: Add suggestions logic
+                    )
+                }) { padding ->
+                    Text(
+                        text = "Settings",
+                        modifier = Modifier.padding(padding)
+                    )
+                }
+            }
+        }
+    }
+}

app/src/main/java/org/schabi/newpipe/util/NavigationHelper.java

@@ -21,6 +21,7 @@ import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentActivity;
 import androidx.fragment.app.FragmentManager;
 import androidx.fragment.app.FragmentTransaction;
+import androidx.preference.PreferenceManager;
 
 import com.jakewharton.processphoenix.ProcessPhoenix;
 
@@ -64,6 +65,7 @@ import org.schabi.newpipe.player.helper.PlayerHolder;
 import org.schabi.newpipe.player.playqueue.PlayQueue;
 import org.schabi.newpipe.player.playqueue.PlayQueueItem;
 import org.schabi.newpipe.settings.SettingsActivity;
+import org.schabi.newpipe.settings.SettingsV2Activity;
 import org.schabi.newpipe.util.external_communication.ShareUtils;
 
 import java.util.List;
@@ -649,7 +651,13 @@ public final class NavigationHelper {
     }
 
     public static void openSettings(final Context context) {
-        final Intent intent = new Intent(context, SettingsActivity.class);
+        final Class<?> settingsClass = PreferenceManager.getDefaultSharedPreferences(context)
+                .getBoolean(
+                        ContextCompat.getString(context, R.string.settings_layout_redesign_key),
+                        false
+                ) ? SettingsV2Activity.class : SettingsActivity.class;
+
+        final Intent intent = new Intent(context, settingsClass);
         context.startActivity(intent);
     }
 

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

@@ -245,6 +245,7 @@
     <string name="crash_the_app_key">crash_the_app_key</string>
     <string name="show_error_snackbar_key">show_error_snackbar_key</string>
     <string name="create_error_notification_key">create_error_notification_key</string>
+    <string name="settings_layout_redesign_key">settings_layout_redesign_key</string>
 
     <!-- THEMES -->
     <string name="theme_key">theme</string>

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

@@ -491,6 +491,7 @@
     <string name="crash_the_app">Crash the app</string>
     <string name="show_error_snackbar">Show an error snackbar</string>
     <string name="create_error_notification">Create an error notification</string>
+    <string name="settings_layout_redesign">Enable the Redesigned Settings page</string>
     <!-- Subscriptions import/export -->
     <string name="import_title">Import</string>
     <string name="import_from">Import from</string>

app/src/main/res/xml/debug_settings.xml

@@ -71,4 +71,11 @@
         android:title="@string/create_error_notification"
         app:singleLineTitle="false"
         app:iconSpaceReserved="false" />
+
+    <SwitchPreferenceCompat
+        android:defaultValue="false"
+        android:key="@string/settings_layout_redesign_key"
+        android:title="@string/settings_layout_redesign"
+        app:iconSpaceReserved="false"
+        app:singleLineTitle="false" />
 </PreferenceScreen>