Create stub options menu for FormHierarchy

collect_app/src/main/java/org/odk/collect/android/activities/FormHierarchyActivity.java

@@ -23,6 +23,8 @@
 import android.support.v7.widget.RecyclerView;
 import android.support.v7.widget.Toolbar;
 import android.view.View;
+import android.view.Menu;
+import android.view.MenuItem;
 import android.widget.Button;
 import android.widget.TextView;
 
@@ -110,6 +112,11 @@ public class FormHierarchyActivity extends CollectAbstractActivity {
      */
     private FormIndex screenIndex;
 
+    /**
+     * The toolbar menu.
+     */
+    private Menu optionsMenu;
+
     protected Button jumpPreviousButton;
     protected Button jumpBeginningButton;
     protected Button jumpEndButton;
@@ -186,6 +193,34 @@ private void restoreInstanceState(Bundle state) {
         }
     }
 
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.form_hierarchy_menu, menu);
+        return super.onCreateOptionsMenu(menu);
+    }
+
+    @Override
+    public boolean onPrepareOptionsMenu(Menu menu) {
+        super.onPrepareOptionsMenu(menu);
+
+        optionsMenu = menu;
+        updateOptionsMenu();
+
+        return true;
+    }
+
+    private void updateOptionsMenu() {
+        // Not ready yet. Menu will be updated automatically once it's been prepared.
+        if (optionsMenu == null) return;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+    }
+
     /**
      * Configure the navigation buttons at the bottom of the screen.
      */
@@ -364,6 +399,7 @@ private void refreshView(boolean isGoingUp) {
             elementsToDisplay = new ArrayList<>();
 
             jumpToHierarchyStartIndex();
+            updateOptionsMenu();
 
             int event = formController.getEvent();
 

collect_app/src/main/res/menu/form_hierarchy_menu.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright (C) 2017 Shobhit Licensed under the Apache
+  License, Version 2.0 (the "License"); you may not use this file except in
+  compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+  Unless required by applicable law or agreed to in writing, software distributed
+  under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES
+  OR CONDITIONS OF ANY KIND, either express or implied. See the License for
+  the specific language governing permissions and limitations under the License.
+-->
+<menu
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+</menu>