WebView: create activity for setting preferences

android/TODO.txt

@@ -7,6 +7,7 @@ TODO:
 - create menu when back pressed:
   - take screenshot
   - set theme
+- add option to have joystick style d-pad instead of arrows
 
 BUILD TODO:
 - script to download Android SDK

android/app/src/debug/AndroidManifest.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+	package="org.arianne.stendhal.client">
+
+	<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+
+</manifest>

android/app/src/main/AndroidManifest.xml

@@ -3,7 +3,6 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 	package="org.arianne.stendhal.client">
 
-	<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 	<uses-permission android:name="android.permission.INTERNET" />
 
 	<application
@@ -24,6 +23,17 @@
 				<category android:name="android.intent.category.LAUNCHER" />
 			</intent-filter>
 		</activity>
+
+		<activity
+			android:name=".PreferencesActivity"
+			android:label="Preferences"
+			android:exported="true"
+			android:configChanges="orientation|screenSize|keyboardHidden">
+
+			<intent-filter>
+				<action android:name="preferences" />
+			</intent-filter>
+		</activity>
 	</application>
 
 </manifest>

android/app/src/main/java/org/arianne/stendhal/client/MainActivity.java

@@ -13,6 +13,7 @@
 
 import android.app.AlertDialog;
 import android.content.DialogInterface;
+import android.content.Intent;
 import android.os.Bundle;
 import androidx.appcompat.app.AppCompatActivity;
 
@@ -37,14 +38,11 @@ protected void onCreate(final Bundle savedInstanceState) {
 		try {
 			super.onCreate(savedInstanceState);
 			instance = this;
-			setContentView(R.layout.activity_main);
 
 			// initialize debug logging mechanism
 			DebugLog.init(getExternalFilesDir(null), this);
 
-			// initialize settings store
-			Settings.init(getExternalFilesDir(null));
-
+			setContentView(R.layout.activity_main);
 			menu = new Menu(this);
 			client = new StendhalWebView(this);
 		} catch (final Exception e) {
@@ -112,8 +110,10 @@ public void finish() {
 	protected void onDestroy() {
 		DebugLog.debug(MainActivity.class.getName() + ".onDestroy() called");
 
-		// XXX: settings only get saved if app exited via menu
-		Settings.commitToFile();
 		super.onDestroy();
 	}
+
+	public void showSettings() {
+		startActivity(new Intent(MainActivity.this, PreferencesActivity.class));
+	}
 }

android/app/src/main/java/org/arianne/stendhal/client/Menu.java

@@ -128,6 +128,8 @@ protected void onCall() {/* do nothing */}
 		btn_settings.setOnClickListener(new ClickListener() {
 			public void onClick(final View v) {
 				super.onClick(v);
+
+				((MainActivity) ctx).showSettings();
 			}
 		});
 

android/app/src/main/java/org/arianne/stendhal/client/PreferencesActivity.java

@@ -0,0 +1,42 @@
+/***************************************************************************
+ *                     Copyright © 2022 - Arianne                          *
+ ***************************************************************************
+ ***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+package org.arianne.stendhal.client;
+
+import android.os.Bundle;
+import android.preference.PreferenceFragment;
+import androidx.appcompat.app.AppCompatActivity;
+
+
+public class PreferencesActivity extends AppCompatActivity {
+
+	@Override
+	protected void onCreate(final Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		setContentView(R.layout.activity_preferences);
+
+		if (findViewById(R.id.preferencesFrame) != null) {
+			if (savedInstanceState != null) {
+				return;
+			}
+
+			final PreferenceFragment frag = new PreferenceFragment() {
+				@Override
+				public void onCreate(final Bundle savedInstanceState) {
+					super.onCreate(savedInstanceState);
+					addPreferencesFromResource(R.xml.preferences);
+				}
+			};
+
+			getFragmentManager().beginTransaction().add(R.id.preferencesFrame, frag).commit();
+		}
+	}
+}