first step at replacing PreferenceActivity by a PreferenceFragment + ActionBarActivity

Author: maxme

WordPressUtils/src/main/java/org/wordpress/android/util/ActivityUtils.java

@@ -0,0 +1,16 @@
+package org.wordpress.android.util;
+
+import android.app.Activity;
+import android.content.Context;
+import android.view.inputmethod.InputMethodManager;
+
+public class ActivityUtils {
+    public static void hideKeyboard(Activity activity) {
+        if (activity != null && activity.getCurrentFocus() != null) {
+            InputMethodManager inputManager = (InputMethodManager) activity.getSystemService(
+                    Context.INPUT_METHOD_SERVICE);
+            inputManager.hideSoftInputFromWindow(activity.getCurrentFocus().getWindowToken(),
+                    InputMethodManager.HIDE_NOT_ALWAYS);
+        }
+    }
+}