add separate icon for unread only switchbox

org.fox.ttrss/src/main/java/org/fox/ttrss/BaseFeedlistFragment.java

@@ -64,6 +64,11 @@ public abstract class BaseFeedlistFragment extends Fragment {
                 TextView text = (TextView) footer.findViewById(R.id.title);
                 text.setText(R.string.unread_only);
 
+                ImageView icon = (ImageView) footer.findViewById(R.id.icon);
+                TypedValue tv = new TypedValue();
+                getActivity().getTheme().resolveAttribute(R.attr.ic_filter_variant, tv, true);
+                icon.setImageResource(tv.resourceId);
+
                 final SwitchCompat rowSwitch = (SwitchCompat) footer.findViewById(R.id.row_switch);
                 rowSwitch.setChecked(activity.getUnreadOnly());
 
@@ -88,8 +93,8 @@ public abstract class BaseFeedlistFragment extends Fragment {
                 text = (TextView) footer.findViewById(R.id.title);
                 text.setText(R.string.preferences);
 
-                ImageView icon = (ImageView) footer.findViewById(R.id.icon);
-                TypedValue tv = new TypedValue();
+                icon = (ImageView) footer.findViewById(R.id.icon);
+                tv = new TypedValue();
                 getActivity().getTheme().resolveAttribute(R.attr.ic_settings, tv, true);
                 icon.setImageResource(tv.resourceId);
 

org.fox.ttrss/src/main/res/values/attrs.xml

@@ -37,4 +37,5 @@
     <attr name="ic_share" format="reference" />
     <attr name="ic_keyboard_backspace" format="reference" />
     <attr name="ic_settings" format="reference" />
+    <attr name="ic_filter_variant" format="reference" />
 </resources>

org.fox.ttrss/src/main/res/values/style.xml

@@ -45,6 +45,7 @@
         <item name="ic_share">@drawable/ic_share_dark</item>
         <item name="ic_keyboard_backspace">@drawable/ic_keyboard_backspace_dark</item>
         <item name="ic_settings">@drawable/ic_settings_dark</item>
+        <item name="ic_filter_variant">@drawable/ic_filter_variant_dark</item>
     </style>
 
     <style name="DarkTheme" parent="Theme.AppCompat.NoActionBar">
@@ -92,6 +93,7 @@
         <item name="ic_share">@drawable/ic_share</item>
         <item name="ic_keyboard_backspace">@drawable/ic_keyboard_backspace</item>
         <item name="ic_settings">@drawable/ic_settings</item>
+        <item name="ic_filter_variant">@drawable/ic_filter_variant</item>
     </style>
 
     <style name="DarkDialogTheme" parent="android:Theme"></style>