Fix preference divider crash on KitKat

Closes #6546
Fixes #6544
// FREEBIE

res/drawable/preference_divider_dark.xml

@@ -4,16 +4,16 @@
     <item>
         <shape>
             <padding android:top="1dp" android:right="0dp" android:bottom="0dp" android:left="0dp" />
-            <solid android:color="?preference_divider_background_dark" />
+            <solid android:color="#101010" />
         </shape>
     </item>
 
     <item>
         <shape>
             <padding android:top="1dp" android:right="0dp" android:bottom="0dp" android:left="0dp" />
-            <solid android:color="?preference_divider_background_light" />
+            <solid android:color="#222222" />
             <size android:height="20dp"/>
         </shape>
     </item>
 
-</layer-list>
+</layer-list>

res/drawable/preference_divider_light.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item>
+        <shape>
+            <padding android:top="1dp" android:right="0dp" android:bottom="0dp" android:left="0dp" />
+            <solid android:color="#d4d4d4" />
+        </shape>
+    </item>
+
+    <item>
+        <shape>
+            <padding android:top="1dp" android:right="0dp" android:bottom="0dp" android:left="0dp" />
+            <solid android:color="#dddddd" />
+            <size android:height="20dp"/>
+        </shape>
+    </item>
+
+</layer-list>

res/layout/preference_divider.xml

@@ -9,6 +9,6 @@
     <View
             android:layout_width="match_parent"
             android:layout_height="10dp"
-            android:background="@drawable/preference_divider"/>
+            android:background="?pref_divider"/>
 
 </LinearLayout>

res/values/attrs.xml

@@ -125,8 +125,7 @@
     <attr name="pref_ic_devices" format="reference" />
     <attr name="pref_ic_advanced" format="reference" />
 
-    <attr name="preference_divider_background_light" format="color" />
-    <attr name="preference_divider_background_dark" format="color"/>
+    <attr name="pref_divider" format="reference" />
 
     <attr name="app_protect_timeout_picker_color" format="reference"/>
 

res/values/themes.xml

@@ -216,8 +216,7 @@
         <item name="pref_ic_devices">@drawable/ic_laptop_black_24dp</item>
         <item name="pref_ic_advanced">@drawable/ic_advanced_black_24dp</item>
 
-        <item name="preference_divider_background_light">#dddddd</item>
-        <item name="preference_divider_background_dark">#d4d4d4</item>
+        <item name="pref_divider">@drawable/preference_divider_light</item>
 
         <item name="app_protect_timeout_picker_color">@style/BetterPickersDialogFragment.Light</item>
 
@@ -349,8 +348,7 @@
         <item name="pref_ic_devices">@drawable/ic_laptop_white_24dp</item>
         <item name="pref_ic_advanced">@drawable/ic_advanced_white_24dp</item>
 
-        <item name="preference_divider_background_light">#222222</item>
-        <item name="preference_divider_background_dark">#101010</item>
+        <item name="pref_divider">@drawable/preference_divider_dark</item>
 
         <item name="app_protect_timeout_picker_color">@style/BetterPickersDialogFragment</item>