Merge pull request #398 from octacode/transit

Added the fading screenTransition.

Author: opticod

source-code/app/src/main/res/values/styles.xml

@@ -34,6 +34,7 @@
         <item name="android:textColorPrimary">@color/black_primary_text</item>
         <item name="android:textColorSecondary">@color/black_secondary_text</item>
         <item name="android:listViewStyle">@style/ListView.Buildmlearn</item>
+        <item name="android:windowAnimationStyle">@style/WindowAnimationTransition</item>
         <item name="android:scrollViewStyle">@style/ScrollView.Buildmlearn</item>
         <item name="alertDialogTheme">@style/AppDialogTheme</item>
     </style>
@@ -279,4 +280,9 @@
 
     <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
 
+    <style name="WindowAnimationTransition">
+        <item name="android:windowEnterAnimation">@android:anim/fade_in</item>
+        <item name="android:windowExitAnimation">@android:anim/fade_out</item>
+    </style>
+
 </resources>