Allow the activity to persist through connecting or disconnecting a keyboard

android-project/app/src/main/AndroidManifest.xml

@@ -42,7 +42,7 @@
      
         <activity android:name="SDLActivity"
             android:label="@string/app_name"
-            android:configChanges="keyboardHidden|orientation|screenSize"
+            android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
             >
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />