Add calls to loseFocus and gainFocus when activity pauses and resumes

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@10048 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/android/com/jme3/app/AndroidHarness.java

@@ -274,10 +274,14 @@ public class AndroidHarness extends Activity implements TouchListener, DialogInt
         }
 
         isGLThreadPaused = false;
+
+        gainFocus();
     }
 
     @Override
     protected void onPause() {
+        loseFocus();
+
         logger.info("onPause");
         super.onPause();
         if (view != null) {