Fix #557 Black theme for OLED devices 🌓

Signed-off-by: stefan-niedermann <info@niedermann.it>

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

@@ -128,10 +128,4 @@
         </androidx.appcompat.widget.LinearLayoutCompat>
     </androidx.appcompat.widget.LinearLayoutCompat>
 
-    <ImageView
-        android:layout_width="match_parent"
-        android:layout_height="1px"
-        android:contentDescription="@null"
-        android:src="@color/separator" />
-
 </FrameLayout>

app/src/main/res/values-night/colors.xml

@@ -4,10 +4,8 @@
 
     <color name="primary_dark">#286090</color>
 
-    <color name="separator">#262626</color>
-
-    <color name="bg_highlighted">#060606</color>
-    <color name="bg_normal">#222222</color>
+    <color name="bg_highlighted">#2a2a2a</color>
+    <color name="bg_normal">#121212</color>
     <color name="bg_attention">#ff3333</color>
     <color name="fg_default">#eeeeee</color>
     <color name="fg_default_selection">#cccccc</color>
@@ -16,5 +14,4 @@
     <color name="fg_contrast">#000000</color>
 
     <color name="category_background">@color/primary</color>
-    <color name="category_border">@color/primary</color>
 </resources>

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

@@ -5,8 +5,6 @@
     <color name="primary">#0082C9</color>
     <color name="primary_dark">#286090</color>
 
-    <color name="separator">#fbfbfb</color>
-
     <color name="bg_highlighted">#eee</color>
     <color name="bg_normal">#ffffff</color>
     <color name="bg_attention">#d40000</color>
@@ -23,7 +21,7 @@
     <color name="widget_fg_default">#000000</color>
     <color name="widget_fg_contrast">#ffffff</color>
 
-    <color name="category_background">#ffffff</color>
+    <color name="category_background">?android:colorBackground</color>
     <color name="category_border">@color/primary</color>
 
     <!-- Dark Theme -->

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

@@ -6,6 +6,7 @@
         <item name="colorPrimaryDark">@color/primary</item>
         <item name="colorAccent">@color/primary</item>
         <item name="windowActionModeOverlay">true</item>
+        <item name="android:colorBackground">@color/bg_normal</item>
     </style>
     <style name="toolbarStyle" parent="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
         <item name="colorAccent">#fff</item>

fastlane/metadata/android/en-US/changelogs/79.txt

@@ -1,4 +1,4 @@
-- 🔄 Background synchronization (#656)
+- 🌓 Make background of dark theme darker (#557)
 
 Requires at least Files app¹ version 3.9.0
 ¹ https://github.com/nextcloud/android