UI theme

app/src/main/java/com/jens/automation2/ActivityMainTabLayout.java

@@ -25,6 +25,8 @@ public class ActivityMainTabLayout extends TabActivity
 		Settings.readFromPersistentStorage(ActivityMainTabLayout.this);
 		Miscellaneous.setDisplayLanguage(this);
 
+		this.setTheme(R.style.AppThemeCompat);
+
 		if(Settings.tabsPlacement == 1)
 			setContentView(R.layout.main_tab_layout_tabs_at_bottom);
 		else

app/src/main/java/com/jens/automation2/ActivityManageRule.java

@@ -160,9 +160,11 @@ public class ActivityManageRule extends Activity
 	protected void onCreate(Bundle savedInstanceState)
 	{
 		super.onCreate(savedInstanceState);
+		this.setTheme(R.style.AppThemeCompat);
 		Miscellaneous.setDisplayLanguage(this);
 		setContentView(R.layout.activity_manage_specific_rule);
 
+
 		context = this;
 		instance = this;
 		

app/src/main/java/com/jens/automation2/ActivityManageTriggerTimeFrame.java

@@ -36,6 +36,7 @@ public class ActivityManageTriggerTimeFrame extends Activity
 	protected void onCreate(Bundle savedInstanceState)
 	{
 		super.onCreate(savedInstanceState);
+		this.setTheme(R.style.AppThemeCompat);
 		Miscellaneous.setDisplayLanguage(this);
 		setContentView(R.layout.activity_manage_trigger_timeframe);
 

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

@@ -45,6 +45,13 @@
 			android:title="@string/logFileMaxSizeTitle"
 			android:inputType="number" />
 
+		<ListPreference
+			android:key="appTheme"
+			android:title="@string/startScreen"
+			android:summary="@string/startScreenSummary"
+			android:entries="@array/startScreenOptions"
+			android:entryValues="@array/startScreenOptionsValues" />
+
 		<ListPreference
 			android:key="startScreen"
 			android:title="@string/startScreen"

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

@@ -9,6 +9,19 @@
         <item name="1">1</item>
     </string-array>
 
+    <!--<string-array name="appThemeOptions">
+        <item name="0">@string/overview</item>
+        <item name="1">@string/pois</item>
+        <item name="2">@string/rules</item>
+        <item name="3">@string/profiles</item>
+    </string-array>
+    <string-array name="startScreenOptionsValues">
+        <item name="0">0</item>
+        <item name="1">1</item>
+        <item name="2">2</item>
+        <item name="3">3</item>
+    </string-array>-->
+
     <string-array name="startScreenOptions">
         <item name="0">@string/overview</item>
         <item name="1">@string/pois</item>

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

@@ -1,5 +1,8 @@
 <resources>
 
     <style name="AppTheme" parent="android:Theme.Light" />
+    <style name="AppThemeMaterial" parent="Theme.MaterialComponents.DayNight" />    <!-- very dark -->
+    <style name="AppThemeMaterial3" parent="Theme.Material3.DayNight" />        <!-- very dark -->
+    <style name="AppThemeCompat" parent="Theme.AppCompat.DayNight" />       <!-- greyish -->
 
 </resources>