Line should be invisible

mobile/src/main/res/layout/activity_main.xml

@@ -44,12 +44,13 @@
         <View
             android:id="@+id/line"
             android:layout_width="0dp"
-            android:layout_height="1dp"
+            android:layout_height="0.1px"
-            android:background="@android:color/white"
+            android:background="@color/navigationBarColor"
             android:elevation="9dp"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintLeft_toLeftOf="parent"
-            app:layout_constraintRight_toRightOf="parent"/>
+            app:layout_constraintRight_toRightOf="parent"
+            tools:ignore="PxUsage"/>
 
     </androidx.constraintlayout.widget.ConstraintLayout>
 

mobile/src/main/res/values-v27/colors.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="navigationBarColor">@android:color/white</color>
+</resources>

mobile/src/main/res/values-v27/styles.xml

@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-
-    <style name="AppTheme" parent="Theme.MaterialComponents.Light.NoActionBar">
-        <item name="colorPrimary">@color/colorPrimary</item>
-        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
-        <item name="colorAccent">@color/colorAccent</item>
-        <item name="android:navigationBarColor">@android:color/white</item>
-        <item name="android:windowLightNavigationBar">true</item>
-    </style>
-
-</resources>

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

@@ -3,4 +3,5 @@
     <color name="colorPrimary">#4CAF50</color>
     <color name="colorPrimaryDark">#388E3C</color>
     <color name="colorAccent">#AEEA00</color>
+    <color name="navigationBarColor">@android:color/black</color>
 </resources>

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

@@ -4,6 +4,8 @@
         <item name="colorPrimary">@color/colorPrimary</item>
         <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
         <item name="colorAccent">@color/colorAccent</item>
+        <item name="android:navigationBarColor">@color/navigationBarColor</item>
+        <item name="android:windowLightNavigationBar">true</item>
     </style>
 
     <!-- https://android.googlesource.com/platform/packages/apps/Settings/+/7efcc35/res/values/styles.xml -->