use a black splash screen at app launch

Author: tibbi

app/src/main/AndroidManifest.xml

@@ -21,7 +21,8 @@
         android:theme="@style/AppTheme">
         <activity
             android:name=".activities.MainActivity"
-            android:screenOrientation="portrait">
+            android:screenOrientation="portrait"
+            android:theme="@style/BlackSplashScreen">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
 

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

@@ -7,6 +7,10 @@
         <item name="actionBarStyle">@style/AppTheme.ActionBarStyle</item>
     </style>
 
+    <style name="BlackSplashScreen" parent="AppTheme">
+        <item name="android:windowBackground">@null</item>
+    </style>
+
     <style name="AppTheme.ActionBarStyle" parent="@style/Base.Widget.AppCompat.ActionBar">
         <item name="background">@color/colorPrimary</item>
         <item name="titleTextStyle">@style/AppTheme.ActionBar.TitleTextStyle</item>