Fix magic numbers in list_fragment.xml #12

res/layout/list_fragment.xml

@@ -57,11 +57,11 @@
             android:id="@+id/grid_root"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
-            android:columnWidth="100dp"
+            android:columnWidth="@dimen/list_fragment_column_width"
             android:gravity="center"
-            android:horizontalSpacing="2dp"
+            android:horizontalSpacing="@dimen/list_fragment_spacing"
             android:stretchMode="columnWidth"
-            android:verticalSpacing="2dp"
+            android:verticalSpacing="@dimen/list_fragment_spacing"
             android:visibility="visible" />
 
     </android.support.v4.widget.SwipeRefreshLayout>

res/values/dims.xml

@@ -93,4 +93,7 @@
     <dimen name="favorite_icon_size">15dp</dimen>
     <dimen name="elevation">30dp</dimen>
     <dimen name="grid_item_text_size">16dip</dimen>
+
+    <dimen name="list_fragment_column_width">100dp</dimen>
+    <dimen name="list_fragment_spacing">2dp</dimen>
 </resources>